Thursday, November 18, 2010

New XTR Goodness


Profile of the pedal hasn't changed for 2011


But the surface area has

Well the new XTR is slowly hitting the net at the moment, mainly through ebay with along of the larger internet retailers still not having the stocks in.
So I decided to upgrade a couple of bits. Over the last couple of months I have been becoming more and more dissatisfied with my CB pedals. The lack of a positive engagement and the ability to cant your feet when clipped in lead to a very vague feel.

So I decided to try out the new XTR 980 race pedals. For 2011 shimano have made a couple of tweaks to their existing 970 design but nothing to radical. They have gotten lighter and the platform has increased. I have to admit straight SPD's are one system I have never used having always opted for CB or time in the past. I decided to try these because of the larger platform surface and the adjustable tension.

So have scouring ebay I managed to pick a pair up from someone here in the ACT who won them at the 2010 Scott event as a lucky draw prize. Funnily enough she rides CB and decided to stick with those and ebay these ones.

Once I got my filthy little hands on them first thing I did was the "tail of the scales". All up they are 80gms heavier than my modified CB eggbeaters.

Next it was playing around with the spring engagement/ release tensions. It took me about 5 minutes to get them where I wanted, having cranked them up to the stiffest setting then winding them back off to find the point where I could clip in without having to fully weight my feet to get the clack.

The engagement is very positive with a real audible clack as the cleat engages.

Having been out on a couple of rides with I don't have alot more to say. The platform is solid with no rocking of the cleats, engagement has been faultless so.


New XTR Front Derailleur

The other item I have replaced is the front derailleur on the 29er. When I initally swapped the parts over on this bike, I left the SLX front derailleur on figuring that a front derailleur is a front derailleur. But after struggling to get it set up with my dual-control levers, I cracked and bought a one of the new XTR derailleurs.

Out of the box it's profile has changed to the previous model and in fact it almost looks as though they have beefed it up to improve the shifting, not that the old model had any problems with this.

Setup was straight forward, 34.9mm clamp bolt straight on, set the height, set the rotation, cable tension....done.

First spin around the driveway and it just works. All the gears minimal rubbing. Clicks are positive but not super stiff, so the changes are easier. And this was the issue with the SLX derailleur, it felt like the weight of the spring was to much and you have to fight it to move it up through the gears.

In comparsions I have a SRAM XX front derailleur on the dually and I have to say I prefer the action of the XTR. It feels smoother even though the XX derailleur is lighter.

Tuesday, November 16, 2010

Fitz's Write Up...Finally

Intro

Two weekends ago was that time of year again....Fitz’s Epic, where I get to haul my sorry a$$ over a bunch of climbs for the day all in the name of fun.
The lead-up to the event this year has been OK, but I don’t have a lot of longer rides up the belt this time around so I knew I was just going to have to rely on experience to get through the 207kms for the day. Also this year I decided I was going to ride the course differently and not spend over 2/3’s of it off the front solo.

Night Before

My original thinking was to ride to the race, ride, and then ride home afterwards to give about 250ks for the day, but the forecast, and then eventual downpour over nite with continuing showers in the morning put paid to this. It also had me scratching through my gear cupboard at the last minute trying to find lightweight waterproof gear.

I ended up opting for Defeet arm-skins, Assos knee warmers with a layer of Quoleum embrocation smeared on underneath. Top was a standard short sleeve with a Craft medium weight base layer underneath. I threw my Gore jacket in the back pocket as a just in case last resort.

The Start
With the showers coming and going of the proceeding 2 hrs before the start there moments there where I was asking myself if I really wanted to spend the next 8hrs in the pouring rain.... Manning up I threw the bike knowing that it should (fingers crossed) turn into a fine day, and drove to the start.
Lining up for the start, there was the normal 1 minutes silence for the fallen rider who crashed and died during the event a number of years back. Then the shout and we’re off.

Of course the Joule doesn’t want to work with the wheel sensor after I had swapped wheels for the event so I pull over after 300 metres and have a fiddle with it, no joy so I quickly change the mode and start off again and try making my way to the front. Straight away I can see someone up there is turning the screws as the bunch has already shattered we’ve done less than 1k and I’m dodging riders left and right trying to move up. By the first intersection I’m back in the front 10 riders, but the pace is still on.

I sit back and try to relax for the ride down into Pierce’s Creek, but after about 5k the rain starts falling again. It’s at this point a rider on a full TT bike comes ripping past and takes off down the road, everyone looks at each other shrugs and figures we’ll see him later.

Pierces Creek to Namadgi Turn
At the bottom of the Pierces Creek climb I look down at the Joule and the Intensity factor is 0.97, and while I’m comfortable I figure the bunch is going to start reducing very quickly and sure enough even though the tempo is steady we crest the climb with only 5 of us at the front. Over the next couple of k’s there is a re-grouping with riders coming back.

However the descents in the wet split the bunch again due to cautious riding by some, and plain nervousness by others.By the time we reach the space station turn the group has solidified with approximately 15 riders.

In the next 15k’s to Tharwa we are hit by another 2 rain fronts and lose some riders with the bunch coming down to 10. By this point the pace has come down but with the tailwind we are still covering the distance quickly. The drop into the base of the Fitz’s climb enables the riders to sort themselves out in terms of climbing ability before the ascent starts.

Having reacquainted myself with the climb the previous weekend I knew it still sucked, with a near maximum effort required for close to 14minutes to crest the top. With the roads still being damp even though it had not rained in the past ½ hour, I was struggling with wheel spin on the climb every time I got out of the saddle to change muscle groups. The geometry of the bike plus the steep grade meant that there was less weight over the rear so I would get a ¼ turn of wheel spin on the down stroke.

Having packed the trusty 29t cassette for this ride, I was still doing it easier than others. I can normally grind it out up Fitz’s without having to resort to using it but today in the wet it came in handy on the lower slopes to maintain tempo without having to drop my cadence below about 65rpm.

Over the top of the climb there were two riders that had managed to gap the small group I was with, over the next few Km’s to the far turn we kept them pegged at under a minute and within sight distance. It was at this stage that Tri-boy went flying past in the other direction, I estimated he probably had about a 10 minute lead at this stage. One of the front riders dropped back about a kilometre before the turn before we all stopped. We re-grouped at this stage to about 7 riders, got out the tear and go slips to prove we had made the turn and set off for Apollo Rd.

Namadgi Turn to Top of Corin Climb
By this stage fatigue was setting in with some of the riders, and we had a low speed fall on one of the rolling climbs after a touch of wheels. The group waited for the two riders to catch back up with no one seriously injured.

Also caution was exercised on the Fitz’s decent due to the still wet surface, before a couple more rolling hills then the left turn into Apollo Road.
At this stage the sun appeared from behind the clouds, and it warmed up enough to roll my arm-warmers down. Up the first 1/3 of the climb is where the damage is done and myself and two other riders gapped the other 4 and grunted and stomped up the 3 ramp sections before crossing the cattle grate and climb levelling out. From here we kept riding a solid tempo up to the checkpoint at the top. About halfway up I kept expecting to see tri-boy flying down the climb, and we he didn’t appear we assumed he had blown up and gone home.

Another re-grouping at the top and we set of back down the descent. About 1/3 of the way down, I spied tri-boy stamping up the climb and had a good laugh to myself. Even though the left turn is clearly sign-posted he had flown past it and now was having to make up time.

So this left 1 rider still out front with a group of 6 rolling along to the climb up Corin. In the past it’s this section where I have opened up serious time to other riders because of how windy it normally is and how rolling the terrain is.
This year rolling in the group was a lot more pleasant, even though I was doing longer pulls on the front. Passing through Tharwa, we started having to dodge riders who were in the shorter distances and spread across the road. Towards the end of this section I was sitting on the front for 3-4k setting tempo because the other riders were really pushing their limits.

About a kilometre before the left turn into Corin Road I looked across and could see the rider I had nick-name red-jacket making his way across the first rolling/ false flat sections of the Corin climb. The others saw him too and started saying things like you’ll catch him up the climb etc etc, but I wasn’t too sure. He had held a gap of about a minute for the past 20+k’s so he wasn’t crawling.

Again on the climb the same three riders formed at the front, and we set a steady tempo up the climb. Compared to the year previously where the temps had been in the low to mid 30’s by this point the high teen’s was really really pleasant.
Up the climb I kept getting glimpses of red-jacket but as I guessed we didn’t make any time up, up to the check point.
Just as we were filling our bottles up and getting ready for the descent tri-boy came storming in, practically threw the tear and go at the volunteers and took off back down the descent. I quickly finished messing with my bottles and took off in pursuit leaving the other two behind.

Corin to Finish
Mentally I knew I was going to have to do a suicide descent to catch back what I guessed was 45 seconds to tri-boy. On the initial part of the descent I couldn’t even see him until we got about halfway down. So even pushing the limits, slicing the corners and not touching the brakes I had made up only 15 seconds. I knew if I didn’t get him by the left turn back onto the main road he was going to be gone. I was slowly running out of road to the turn and mentally I was preparing myself to have to do a maximum sprint up the last portion of the main road climb to try and close the gap....a do or die effort.

However just before the turn he pulled over and started grabbing free bottles and food from someone in a car so I made the corner first and started the drag through the remaining rolling hills to Mt McDonald. I decided to try and get as much of a gap on him through here to as a cushion into the final pinch climbs through Pierces Creek.

About 5k’s up the road I was joined by a group of riders from behind who I started rolling with before Tri-boy came flying past. No one else tried jumping on his wheel, so I had a go at it and before long we had gapped the group. Now if you haven’t tried drafting someone on a TT bike let me tell you it’s hard, they sit a lot lower down and provide almost no shelter!

After a couple of k’s he turned around and I think was surprised to find someone on his wheel, then he seemed to get a bit upset when he started motioning me through and I started shaking my head....hmmm I wonder why?
After get a small amount of recovery we started rolling before hitting the rollers leading into Pierces Creek and it was at this stage the legs had enough and I let him go. The final checkpoint this year was located further up Mt McDonald in the bend of the right hander before it steepens for the top. I did a quick stop here as the bunch I distance earlier had worked together to peg time back. So I did the tear and go and started off up the hill.

With not much further to ride I was giving it death up the climb still feeling good until just of the top where it starts to roll before the right hander, and I bonked spectacularly. One minute I was flying the next I was dizzy, fuzzy headed and just couldn’t put any power to the pedals. It took me a good minute to work out what had happened as it has been years since I have bonked this hard. The interesting thing was one part of my brain knew I needed to start shovelling food into my mouth, but the other part just wanted to keep riding and trying to turn the pedals over. After what felt like 5 minutes the eating part won, and I started throwing down gels, a clif bar, and a couple of clif shots.

I started to feel better straight away, but the damage had been done. I had missed eating regularly over the previous hour and a half and was now paying for it. So as I made my way slowly back to Stromlo trying to find my legs again I resigned myself to getting caught by the following bunch at some point and then spat out the back.
I made it as far as the top of the first of the three sisters before a group of 6 came past. I hung in for about 200 metres before my legs folded and I watched them ride off into the distance. With only about 7k’s to the finish I just kept pedalling and eventually rolled across the line for a time just over 7.5 hours.

After handing over my final tear and go for the pay I re-filled my bottle put the bike into the easiest gear I had and started the slow spin home....it took me just on 50 minutes to do 15k.

Summary
This year I took a more relaxed approach to this ride, as the previous two times I have ridden I have ended up in the hurt box for the best part of the next week trying to recover. Fortunately this year I didn’t have to back up for the Highland fling 100miler like last year.

The best part of the ride this year was the weather. The wind was a lot less, and temperatures didn’t go as high. This meant the risk of dehydration wasn’t there. Also riding with others this time around for longer made it a lot more enjoyable.
The worst part was the first hour and a half in the pouring rain and a couple of very nervous riders who couldn’t descend in the wet. There was a couple of point where I had it almost locked up to avoid them due to braking in the wrong places.

Wednesday, November 10, 2010

Upgrades


Finally finished, new wheels, tires, seat and post


Easton Haven wheel set with Hope Floating Rotors

So the new wheels for the 29er turned up last week, along with the other bits to get them up and running however the tires I was sent were 26" not 29" so I had to send em back. I had abit of think as to where I could get tires on short notice and ended up heading into Lonsdale St Cyclery during my lunch break.

There on the wall they had a number of the new Specialized 2bliss tires in 29" so after steering at them for about 5 minutes pick them up and putting them down I grabbed a Fasttrak for the front and a Renegade for the rear. I was tossing up whether the Renegade would have enough grip for the front and hence ending up mixing the two.


Specialized 2Bliss Renegade


Specialized 2Bliss Fast Trak

Also the new seatpost and seat arrived so it now matches the saddle on the roadie. I opted for a Prologo Scratch TR again, it's not the lightest but it is comfortable.


Prologo Scratch TR

Also on the weekend I finall got around to applying the frameskins to the bike...well kinda. I started, got air bubbles in the first one before wifey took over and finished the rest for me. I figure its not a boy job...requires to much patience. The end result is fantastic, you can't actually tell its there in most cases.


Installed FrameSkin Protection with no air bubbles thanks to Wifey

Side Project

Over the last couple of weeks I have had a steady follow of packages arriving thanks to my little Brother. A while back I offered to build his bike up for him once he got all the pieces sorted. So on Sunday I finally got it all assembled and boy is it something different.

My brother opted for an all-mountain build based around a GT Force frame. When this turned up I had to throw it on the scales and I couldn't believe it when they read 3.0kg including the shock.

From here it's been XT parts and other suitable items, thomson, easton, dt swiss, White Industries. Alot of it is brand new but about 1/3 was stuff I had laying around.

I set it up to initally to weight and measurements and took it for a quick spin on pavement. And all I can say is different..... 150mm travel, slack angles, and a more up-right position is totally removed from what I'm used to.

He flies into the country tomorrow, and we're supposed to be riding Friday so I should get a chance to have a play with it then off road.


Little Brother's All-Mountain Bike/Tank

Wednesday, October 27, 2010

Sucked in....

That's right I have been sucked into two of the "latest" trends.....carbon frames and 29ers. The only thing that caould be more insideous is combining the two together. Though carbon frames really aren't the latest trend, but I have resisted upgrading to one for a while. But about a month ago I crack and ordered a frame from pedalforce.
The frame is what can be termed a "carbon blank", a generic carbon frame with pedalforce's logo on it. The frame however does have two of the latest "upgrades" on it, BB30 and a ISP (Intergrated Seat Post). I upspec the package by purchasing a fork from edge composites to ensure fantastic handling.
When the frame arrived I was surprised to find it weighted in under 950gms and the finish was immaculate with no blemishes in the clearcoat.
Assembly was straight forward, but I did have to purchase a tool for pressing the bearings into the frame.
Having ridden it for over a month now and the rides is as good as the cannondale that it replaced. It doesn't have any quirks in the handling and with the BB30 is definitely more responsive to accelerations.

The other trend I have jumped on is the purchase of a 29er hardtail. After doing alot of research regrading a new hardtail through the early part of this year, I finally committed to a Giant 29er. I won't go into to much detail as the benefits and downsides are easily found on the internet. What really pushed me towards a 29er was the ability to not get bogged down through the smaller rough stuff and added cushioning from the wheels.

I have to say at this point I think I have made the right decision. The bike handles more like a roadbike with the larger wheelsize. For a lot of pure mtbers this is seen as a disadvantage rather than advantage, but for me having spent so much time it is second nature. First rideout I found that I was steering the bike through corners alot quicker than the old hardtail, there seemed to be a larger amount of grip despite the soggy conditions. Also the bike felt more stable at speed. I put this down to the larger wheels and 15mm through axle upfront. I also think the enlarged headtube contributes towards the stability as well.

The interesting thing about the bike as well is the riding position. Because of the larger wheels a rider is place more upright and I found it leads to a sense of being "in the bike" instead on on top of it like a normal mtb.

So for every positive there must be some negatives, and in this case its the weight. Stock from the shop the bike weighted in at 11.9kg....definitely porky. So the day after I got it home the garage looked like a scene from Monster garage as I tore my old hardtail down and swapped bits over. I also converted the stock wheels to tubeless. All up I saved about 1kg in weight.
The biggest contributor to the excess weight are the stock wheels. These come in a something like 2.4kgs. So I have ordered up a new pair which should be here next week. At a guess this will get the bike closer to the 10kg mark.

The other item I bought was a smaller diameter titanium seatpost to added to the cushioning of the ride...also should be here next week.

For a more detailed review of the Giant XTC 29er head over to Kev's Blog as he recently purchase one too and has a full write up there







New Ride



Tuesday, September 7, 2010

Stone Age



Yup, sorry for the lack of updates but I have no internet at home at the moment as we change over to a naked dsl line. First it was not broadband only dial up (A 11meg file taking 1/2 hour to load) now no service for at least the next week...Yay the joys of technology.

The training is progressing but nothing on the racing front for the time being. I have been spending alot of time playing with the Joule 2.0 and it providing to a good reliable unit with all the training metrics functioning properly.

So once I log some more hours up I will post a full report.

Friday, August 27, 2010

New Black Box




Review to follow as part of the final installment on Powermeters.

Tuesday, August 24, 2010

Seen on the way home....



Geek on a Segway....I didn't know whether to laugh or cry.
On the bike path wearing a helmet...made my ride home.

Monday, August 23, 2010

I give it a week....


mmmm Shiny Whiteness
These turned up in the post today. I was so impressed with my Fury shoes I bought the matching road version. I opted not to get the slightly obnoxious yellow version, but the more subtle white version. However I'm now thinking that given our recent run of weather it will be about a week before they are white/ grey/ black smudged. Though admittedly the yellow version have cleaned up really well time they have ended up covered in filth.

Low profile sole

Next to it's MTB Cousin

Sunday, August 22, 2010

Hit out

So I decided to rock up for my first Bakery Bunch ride since about March. So the result.......well I made the front group through to the end but boy I was in a world a hurt. 335w NP for 20min. First up is the overall view,and secondly is the plot using fast find. As you can see in the space of 20 minutes there are close to 30 surges of over 315w or my the upper end of my threshold. Even trying to stay out of the wind when the acid is on hurts.

Overall plot

So how many surges in 20mins?

Thursday, August 19, 2010

Power Meter Choices Part II: Installation, Set-up, and other things that bring you to tears.

This the second in my little series about power meters and how I choose the one I did. This second part focuses on that happens after you get the nice shiny new box and starting the installation, setup and calibration process.

SRM
First up again is SRM...because well it’s the brand I have owned the longest and am the most familiar with. I would like to say I have had no experience with the new wireless version, but I imagine it would be similar to setting up a Quarq (See below).

Installation
Setting up a wired SRM involves two main parts. The installation of the crank it’s self and the routing of the cabling for the head unit.
Installing the crank is about a 10 minute process depending on whether you have the correct BB in the frame..... if not double it. At this point you can choose to install the crank sensor. Depending on which wiring kit sits behind the crank on the chain stay or if you have the more modern version is mounted using the bolt for the BB cable guide.
From here the job becomes a bit more time consuming if you want it done correctly the first time. Running the cable up the down tube and around the front brake cable so that you have a nice tidy set of wiring takes another 20-30 minutes and can be quite frustrating. I have used various methods including insulation tape and cable ties to get everything in place. One of the key things to watch is that there is enough length around the head tube area so that if the handlebars are turned 90° you do not snap the speed or sensor cable (been there done that $90 lesson).
The final step is mounting the head unit clamp and putting the unit on. I rate the SRM head unit as having the second best fixing method. I have broken a head unit before when a taxi in Sydney decided to open a door on me and snapped it from the mount. Given their position they can be damaged in an accident if something manages to get between your bars.

Trouble Shooting
I have had to trouble shoot SRM installations before and they are a bit more involved due to the number of potential sources of error. Sensor placement near the crank, faulty wiring kits, and batteries are the biggest causes of failure to get a signal from the cranks. The latter two are the expensive ones to fix as they require a new wiring kit or the crank to go off for a week to Kinetic to have the battery replaced.

Calibration
As I have mentioned previously SRM are the only power meter which a user can change the calibration on. I advise anyone that purchases one to check the calibration as the slope from SRM themselves is known to somewhat suspect. When I had two I would calibrate them once a month as it would only take about ½ hour and therefore I knew my data was always accurate.
The 0 offset for a SRM is set by pressing a combination of buttons back pedalling once, waiting for the numbers to settle then hitting enter. SRM’s seem to be more temperature sensitive than powertaps due to the way that power is measured with strain gauges. This means having to potentially reset this value a couple of times in a 5 hour ride if the weather is changeable.

Powertap
I have owned my powertap now for about 18 months and is the second oldest system I have experience with.

Installation
Depending on where you purchase yours from the system either comes built up in a wheel or as a hub which you have to have built up. The second option gives you more freedom of choice for rims and also it means that the freight costs are less due to smaller size of the box.
I had dramas with mine due to the LBS and my choice of spokes I used to get the wheel built up with. In summary it took over a year for the local distributor to admit that the spokes used on my wheel were a bad batch and replace them.
This issue aside getting the wheel, throwing a tire on and mounting the head unit up are as simple as it gets.
The Little Yellow Computer (LYC) is the most secure of all the head units I have tried due to its placement and the locking mechanism, which is very positive.

TroubleShooting
The powertap system is Ant+ so the headunit is paired with the hub. If the two aren’t talking it is normally a battery issue. Replacing the battery in the LYC is very straight forward with the cover easy to access. However on the MTB powertap you have to remove the disc rotor to be able to replace the hub battery and this is a 15 minute job, which luckily you should only have to do every 6 months or so.
The other issue with the powertap wheels their bearings. Basically, they are sh!t. I had to replace mine after only 3 months of getting a fresh rear wheel earlier this year. While getting the bearings is easy it’s about ¾ process to disassemble the hub punch the bearings out, press the new ones in and reassemble. The new bearings I got down the road are miles better than the originals and still going strong 6 months later.

Calibration
I wrote a piece a couple of months back about how to check the slope for a powertap. This is all that can be done by the user. If there are any issues the hub has to be sent back to Saris for repair.
Setting the 0 offset in the headunit is done so that every time a user coasts the offset is re-set. This is a good function and means that you don’t have to manually perform this as with a SRM.

Quarq
The new arrow in my quiver and so far so good.

Installation
So it’s and integrated crank and the installation is the same for any such similar crank set. I had to remove my existing BB and put in the SRAM specific GPX model that came with the crank set. Here I hit my first snag, the BB tool I had did not fit the non-drive side cup...seems that the axle hole on this cup is smaller than the drive side. So I tightened up by hand and continued with installing the cranks.
With wireless cranks (both SRM & Cinqo) you need to place a magnet close to the spider to activate the electronics when you begin pedalling. To start with I just used insulation tape to fix the magnet as I wasn’t sure whether the position I had chosen was going to activate the cranks.
Next I pushed/tapped the cranks through the BB using a rubber mallet as the machining tolerances are very tight. The fixing for the SRAM S950 is a single 8mm allen bolt on the non-drive crank arm. Basically tighten this up and that’s it. There is no ability to adjust play in the bearings and it relies upon the machining tolerances to ensure no side to side movement.
Next I mounted up the Garmin 705 on my stem and set about pairing the two up. The Garmin fixing is fairly weak. So far I have lost my GPS through user error with the bracket no engaging correctly and in a crash at Wagga earlier in the year. I don’t see the system being a problem on the roadie but time will tell.
Pairing the Garmin 705 & cranks was very easy it took less than 20 seconds...it seemed I had placed the magnet in the correct location.

Trouble Shooting
I got my first taste of this on my second ride! Was riding home from work and the cranks wouldn’t work. The night before I had rolled back the firmware as the latest stuff from Garmin is buggy with speed drop outs so it was back to version 2.90. So to start with I tried re-pairing the devices and that didn’t work. So I rode home with no power. Next I thought the magnet had moved so I spent ½ hour playing with that...still no joy. Then I went back to the settings in the Garmin and had another play with that...no luck. Finally I started going through the on-line trouble shooting guide till I got to the battery. I thought what are the chances? So I popped the battery on the cranks... and low and behold the Garmin flashed up a “low battery warning on power meter message”.
Back up stairs and scratching through the spares in the bottom draw and do you think I had the right one...nope. So I dashed off to the mall on the off chance that Coles/ Woolies/ K-Mart might have the right on in stock. But no dice.
Next day it was a trip to Dick Smith at lunch time and $13 later I had 3 new batteries and it was all good again.
So from this I learned that the system is more complicated than my previous SRM with potential sources of problems from both the head unit and the cranks themselves.

Calibration
The Cinqo transmits the 0 offset to the head unit so this viewable by the user. There are two method of re-setting this. Either by manually doing it using the options on the Garmin or alternatively backpedalling 4 times. The Cinqo is setup to detect this movement and resets the offset.
The slope is basically non-changeable....but I did read it is possible using Linux, a Garmin ANT+ USB stick and some programming knowledge. This is way beyond anything an average user/ me perform themselves.

So this concludes the second part of the series. I’ll post the next in a couple of days.

Monday, August 16, 2010

Power Meter Choices Part 1

Well rather than write screeds in one sitting I have decided to break-up my entry on how I went about choosing my new powermeter, the installation, and headunit.
I am going to break this into three parts with this being the first regarding system choice.

The Options
There were a couple of reasons I decided to update my system. The first was the age and the second was the technology used. My old SRM systems were coming up to about 7-8 years old, and while they were still reliable, the fact that they were wired and used either a square-taper or Octalink BB was becoming a hindrance in looking at new frames.
I already knew the three systems I was going to have a closer look at SRM, PowerTap, & Cinqo.

SRM
This the grand daddy of all the power measurement systems available on the market today and the technology hasn’t changed much since it was originally implemented. The design has been refined and spread across a number of different crank systems from Shimano, FSA, Cannondale, and Rotor.
The biggest developments have been in terms of the head unit. With a progression from the original PCIV which I started off with through to the latest PCVII. Each iteration has been a refinement of the previous, though some would argue that the PCIV’s 0.1sec recording rate was a feature that should have been continued on later models.
My SRM’s were running the PCV head unit which was the last of the wired units supported before SRM changed to wireless with the PC VI. When they made this leap there was no cross compatibility between the systems meaning that a PC VI would not work with a wired system.

The Good
• Proven, reliable, design.
• Easy to setup and use.
• The gold standard in accuracy.
• Service is the best in the industry.
• User calibrated.
• Now USB compatable/ Charging
• 130+hr battery

The Bad
• Price. In market terms SRM’s are overpriced given the technology involved as demonstrated by pricing for Quarq’s.
• Units are sold minus a head unit which is needed to check/ change calibration. Across all power meters, these are the most overpriced component given the technology involved.
• No GPS.
• Head Unit not user customisable.



Powertap
Another power meter I currently own as it is the only viable system available for the MTB. Like most people I have had problems since purchasing it, with it having to go to the USA to be replaced (reason not given) by Saris. And 1x set of dead bearings inside of 4 months on return. Powertaps are cheap in comparison to the other systems available and a lot of people end up purchasing them for this reason. However as mentioned previously the support given by TBA for these is next to none...if you are lucky. I ended up contacting Saris directly when I had problems with mine. Personally if/ when Cinqo get a MTB crank on the market I will be selling my powertap wheel.

The Good
• Cheap, you can purchase two for the price of an SRM.
• Easy to use

The Bad
• Chews bearings
• Cannot be user calibrated
• Next to no support in Australia from the distributor
• Bound to one rear wheel.


Cinqo
The new kid on the block. The system is not common over this side of the world, and after doing some research I found out why. Cinqo produce measurement systems for a number of cranksets, SRAM, Lighting, Rotor, Cannondale basically any crankset which has a removable spider similar to SRM. However the only cranks distributed internationally are the SRAM version. And these are done back through SRAM. So it goes something like this,
Quarq get the cranks from SRAM -> Fit the new spider and send back to SRAM international ->SRAM International then send these out to their distributors in each region -> You get your LBS to contact the countries distributor and purchase them through them.
You cannot buy directly from Quarq if you live outside the USA or Canada....which seems a bit backwards.
So I initially found a cheap on-line seller of the cranks here in Australia, but after a number of emails to Quarq, SRAM USA, the seller, And Monza here in Australia. I worked out that they were not an official distribution channel despite claiming to be. For those interested the only official distributors here in Australia are Monza and Echelon Sports.
In the end I actually found a second hand set from the USA for less than $AU1300....good score.

The Good
• Proven technology- Strain gauges in the crank.
• User replaceable battery- yah no more $AU90 to have the crank battery replaced every 18 months.
• Spider can be swapped to BB30 cranks should buy a new Cannondale Caad 10
• Lighter than current setup
• Integrated BB spindle means it’s compatibles with most modern frames.
• Not bound to a specific headunit, can be used with Garmin, Saris Joule, and SRM (if you get the signal changed.

The Bad
• No local support. If there is a problem it has to go back to the US
• Not easily user calibrated. It is possible but very involved and you probably need to be a computer programmer to do it.

The Unknown
• Reliability- Still a very young system and its long term durability is not known.
• Accuracy- The crank has 20 separate strain gauges to achieve the claimed 2% accuracy vs SRM’s 2, 4, or 8 gauges. Until I started using the crank this was going to be the real unknown as to how it stacks up against the SRM.

Part 2 will follow in a the next couple of days.

Wednesday, August 11, 2010

New Powermeter




So last night was the first outing with the Cinqo and it performed perfectly...even in 3 hours of pouring rain. I have teamed the new crank up with my Garmin 705 for the time being and the data coming out agrees within the margin of error between the two powermeters.
I performed a quick and dirty MFA last night to check and the difference is in the order or 2%.
I will provide an fuller post within the next couple of days as to why I choose the Quarq and details regarding setup etc.

Monday, August 9, 2010

Goodbye old Friend


Goodbye old friend...I'm going to miss you.
Yes today is a sad day, it was my last ride on my beloved SRM. My replacement powermeter arrived today, and after riding home. I tore her down and put the new one on.
My old SRM was super reliable and never missed a beat in the 3 years that I was it's owner, and now like it's predecessor is going on fleabay to a new home.

But enough with all the sentiment, I have a new toy to play with! It's wireless, 100gms lighter then the old system, and full of carbony goodness. So after putting it through it's paces tomorrow night I'll post up a picture....And yes it's something a bit different ;)

Thursday, August 5, 2010

Carbon is bad mmmkay



Someone sent me a link to this site involving well...pictures of broken carbon bike bits....... oh no the horror

Wednesday, August 4, 2010

40°+

As I mentioned in my last post the training has been going really well, and the motivation is super high at the moment. So well in fact that over the past 10 days I have probably spent 10hr+ training in the pouring rain.
Well my body has decided it's payback time and as of last night I am running a fever in excess of 39°. It peaked out last night before I went to bed at over 40°+!
So today I'm at home, and supposed to be in bed. However wifey did leave me a medium sized list to chores to do so haven't made it back there after dropping her off at work this morning. I also had to swear on pain of death, that I would not ride my bike today, including on the windtrainer.
But there is a bright side! These arrived last Friday so I might get a chance to watch half of one this afternoon.

Wednesday, July 28, 2010

Static.....Ebaying my life


Sorry for the lack of updates, but everything is going well and on track. In fact I've got a 12hr on the cards for next weekend! My first.... so trying new things and all that.
Other then that, things are a bit sad. I'm cleaning out/ ebaying my garage, and have takers for the last two pair so carbon wheelsets I had sitting there. So I guess I'm no longer a roadie. I also have my SRM's up for grabs with alot of interested buyers.
So with the SRM's on sale I have a new powermeter lined up for training on the road (post to come on that)

Monday, July 19, 2010

Up For Sale 2x SRM's


Ok, so I finally decided I'm going to update/downsize my collection of SRM's. So I'm putting up for sale 1x full system & 1x partial system.

1x SRM Pro System ($900)
-1x Pro Cranks (4x strain gauges & black/white/grey sticker) 170mm with Campagnolo square taper BB (english thread). Accuracy +/-2%
-1x Wired Head Unit V(white)
-1x Front wiring harness
-1x O/S (31.8) alloy Handlebar mount
-1x Australia/ NZ charger
-1x USB download cable

1x SRM Amateur System ($700)
-1x Amateur Cranks (2x strain gauges & green/black/white sticker) 172.5mm with Dura-Ace Octalink BB(english thread). Accuracy +/-5%
-1x Wired Head Unit V(Black)
-1x Front wiring harness
-1x Plastic Handlebar mount(25.4)

Email me at d_w_rae@hotmail.com if interested.

Friday, July 16, 2010

New SRM Importer- Australia


I just found out yesterday that there is now a new retailer for SRM in Australia. Having a look through the price list and things can come way down over the last couple of years. A new wireless square taper crank can be had for $AU1650+GST and one of the new headunits for $AU900+GST.
So head over to RST Training for the full price list. Order times are 2-3 weeks out of Germany

Wednesday, July 14, 2010

Base Layers







So given Canberra is currently in the grips of winter, I thought it time to upgrade some of my baselayers and add a couple of longsleeve items to the wardrobe. So after some research I choose a couple of Craft Pro Zero Extreme tops.

I have always ridden with a technical baselayer to help aid in the insulation/ evapouration process right from my days as a novice.

Craft isn't a name that is well known over this side of the globe infact I couldn't find a local importer at all. So I ended up doing the purchase from one of the normal mail order companies and a week later they turned up in the post.

So first up the Zero Extreme range have a dedicated windstop front on them to keep the chill off your chest. Next up is the channelled fabric used for the back and arms. It's very soft to touch and has flat stitching to ensure no chafing.

Fitwise the body and arms are a good length in all the right places ie the shirt tail region and sleeves when moving your arms don't ride up and expose your wrist area.

The first ride was yesterday in a balmy 3 degrees. Firstly once on I didn't notice the undershirt again it didn't move or chafe so thats a huge tick. Further into the ride once I had warmed up I noticed that the shirt wasn't holding any moisture and breathing to allow the sweat to move out to my thermal jacket.

After the ride I checked the top and it was slightly damp, however once I hung this up at work it had dried out by the time I rode home. The other thing was there was no odour like some undershirt once they get sweat into them.

So all up I'm stoked with these and highly recommend the brand...in fact I will probably buy a couple of short sleeve zero versions (no windstop front) for spring.

Saturday, July 10, 2010

Cyclists fight like little girls



Trying to bash someone with a carbon wheel...I think alloy might have been more effective ;)




Always funny watching roadies try and have a fight after a race....those shoes make it difficult to get balanced footing(they also can't punch for sh!t).

Thursday, July 8, 2010

Diamonds on the soles of her shoes


Well not really. They are Swarovski Kristallwelten, still very cool. No price yet but given how expensive sidi shoes normally are...expect to pay a handsome premium!

Sunday, July 4, 2010

Looks like a scooter but not...

Yesterday morning while out doing family stuff I saw one of these on top of a car. Big chunky MTB wheels, covered in mud. I caught my eye and I thought "That's just dumb... go get a MTB if you want to play in the mud, not a kids toy"

A kids scooter....?

It wasn't till I was riding along one of the fire roads on my way to Stromlo later in the day, I worked out what it really was. I heard them before I saw them, then screaming round the corner, came one of these scooters.... being towed my four huskys/ malamutes at full noise, these guys were flying. I pulled over to let them past, something pretty special and made it made my day.

Calibration

So I have been mentally been telling myself that, "I need to check the calibration of my MTB powertap" for a couple of months now, but just haven't got around to it. I know a number of the guys with them have started having various problems so, I thought now was a good time to check the accuracy.

So today, decided was the day and I created the spreadsheet and set aside 1/2 hour to do the testing. The testing procedure is also the same as for a SRM, except with the powertap you test various gear combinations. The only equipment required is something with a know weight, either youself or a couple of lifting plates of at least 20kg and a spirit level for leveling the cranks.

The spreadsheet is just a series of basic calculations, Torque= weight * crank length * 1/25.4 * (rear sprocket/ front chainring).

The yellow powertap headunit displays the measured torque value if you hold the select button for 2 seconds.

So this is the result,


Firstly, the powertap is reading ~ 3.0% low aross the gear range or about 8.9w at threshold. Secondly you can see that the 12t & 36t produce the highest levels or error. This is a consequence of the chainline and way that torque is applied to the hub. 3.0% is double the quoted accuracy from Saris for their hubs, but at this stage I am not worried enough to send it back to be adjusted.

Tuesday, June 29, 2010

Something up the sleeve

Shimano have just launched their site for the new XTR due out in October. And as everyone has been speculating there is a new double XTR....the one crank to rule them all!

Shimano are going to be offering XTR in two options a trail build with dyna-sys and triple crankset and a racer build.



However there are a couple of things I'm not liking. First is a propriety bolt pattern again. 88bcd x 4 bolt (SRAM is 120/80). Secondly this limits the minimum chainring size offered to 40x28. Now this crank is being marketed as a "racers" crank, but we all know that even a 28x36 is very tall gear. SRAM OTOH have their 26x39 and paired with a 36 gives a gearing range that almost equals a standard triple setup.

The crank has been designed with a narrower Q factor and tweakwd chainline to 48.8mm to get rid of the normal MTB stance feel.

The other thing I'm really sad about is that Shimano have abandoned their dual control system on the 2011 range. I am a real fan of this coming from a road background the braking and shifting is just natural and very "road like".

Everything else in the range has been re-jigged as well including calipers, cassette, chain, derailleurs, and wheels.

All up it looks as though this is going to give SRAM a good run for their money in terms of weight and performance. Also Shimano don't release new products until they are spot on so it should be good to go straight out of the box.

Friday, June 25, 2010

Interesting Ad

Interesting Ad from Merckx Bicycles....

Thursday, June 24, 2010

I have been busy!

Haven't posted a write up in a couple of weeks, in fact just before the 8hr race at yellowmundi. This was a race I was looking forward to as it is part of the NSW enduro series for the year, so to DNF out due to busting my knee up, not once, but twice was really disappointing.
In fact I managed to crash in exactly the same spot both times two laps apart. The falls were slow speed through a rocky technical section. The first time hurt and it took me a couple of minutes to get myself together again and back on the bike, but the second time was a lot harder and my knee started swelling and ceasing up. By the time I nursed it through the remainder of the lap it was getting towards excurating so I didn't have any choice but to pull the pin.
By the time I got home it had swollen to the point where there was golfball size lump on the knee and very stiff getting out of the car (Sorry no pictures).

So this mean't a couple of days off the bike, and with it being a long weekend I decided to get productive around the house. I have been swearing to my wife for a while that I would tidy and organise my bike stuff in the garage into some sort of order so on the Monday that's what I did...and it took me most of the day. And here is the final results.



Official Product Shot- CAAD10

Friday, June 18, 2010

The Ghost



First unconfirmed sighting of the new Cannondale Caad 10.
This was rumored to be released this year as an update for the current Caad 9 which I am currently riding. I have been waiting with great antipation for this bike all year...bring it on! (Which means we will see it in October here in Aussie)

Tuesday, June 15, 2010

2011 XTR Crank



First pic's on the new crank. I'm not happy if this is all that's on offer for next year! Where is the double crankset???

Wednesday, June 9, 2010

The Married Life of a Cyclist

2011 XTR






Rumor is 300gms lighter than 2010.
There is a information embargo till June 30th so details are sketchy (no details on the crank yet).... to be honest I'm not feeling it, it just doesn't look like the XTR of old.