"PRO" Cycling Discussion

Questions about bike hire abroad and everything light bike related. No off-topic chat please

Moderators: robbosmans, Moderator Team

User avatar
djconnel
Posts: 7917
Joined: Wed Sep 26, 2007 1:57 pm
Location: San Francisco, CA
Contact:

by djconnel

Tapeworm wrote:^ Wow, I would be surprised if SRM were swapped for Stages...


That's it. I predict an off year for Team Sky. Expect riders to emerge from season with rippling muscles on left legs and atavistic, atrophied right legs due to biofeedback.

by Weenie


Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓    Broad Selection ✓    Worldwide Delivery ✓

www.starbike.com



Geoff
Posts: 5395
Joined: Sat Dec 13, 2003 2:25 am
Location: Canada

by Geoff

:D

nathanong87
Resident master of GIF
Posts: 3405
Joined: Mon Jul 18, 2011 2:44 am
Contact:

by nathanong87

kudos for stages aiming high.

does stages work with those osymettric joints?

dream leadout would be like... tony martin -> boonen -> petachhi -> renshaw -> cav.... could start from 5ks out? haha
Image

i know the bike hasn't changed but OPQS color scheme is NICE!
Image
Last edited by nathanong87 on Fri Jan 10, 2014 5:58 pm, edited 1 time in total.

User avatar
djconnel
Posts: 7917
Joined: Wed Sep 26, 2007 1:57 pm
Location: San Francisco, CA
Contact:

by djconnel

This is really funny:

Image

Chris Froome and SRM. The two are like peanut butter and jelly. The world as we know it is changed forever.

Anyway, Stages makes the same error as SRM, Vector, Quarq... cadence one per pedal stroke, so an error with Osymmetric.

Stages produced somewhat outlier results in a comparison I did with DC Rainmaker data:

Image

ultyguy
Posts: 2330
Joined: Fri Aug 06, 2010 1:35 pm
Location: Geneva

by ultyguy

Sky probably had to use stages b/c w/ their SRM they couldn't make 6.8 w/ the Pinas unless they ran stupidly light wheels :P

petepeterson
Posts: 1402
Joined: Fri Jan 07, 2011 6:58 am
Location: 604

by petepeterson

Image

Meh

User avatar
SolidSnake03
Posts: 556
Joined: Wed Jan 18, 2012 7:09 pm

by SolidSnake03

Understated, classy look but ultimately kinda boring, have to agree with the "meh"
Looks like I made a new 90 Proof friend

User avatar
Guerdi
Posts: 407
Joined: Mon Jan 15, 2007 5:27 pm
Location: Switzerland

by Guerdi

The new fizik volta looks really good IMO

Image

DanW
Posts: 1243
Joined: Fri May 02, 2008 5:39 pm
Location: Here, there and everywhere

by DanW

^ Wow, I would be surprised if SRM were swapped for Stages... but then money talks. Least they'll have very accurate left leg power measurements.

Though in relation to SRM sponsoring Sky, were they actual sponsors? I know Sky purchased a lot of their own gear.


If they buy their own stuff then might they buy Stages rather than SRM? Are Stages really that bad it would need to be a high money marketing ploy?

I wouldn't have thought Pro's have L/R differences. Even in sloppy weekend warriors the difference is only a % or two from (what little) I've seen.

What does your data show djconnel? Sorry, I'm too sleepy to digest it all properly!

Unless Stages gives wildly fluctuating power readings then it is just as good a training tool as anything else surely? Plus it's light and this is WW :D

P.S. POC helmets seem like a good metaphor for team Garmin- Trying hard to look cool and be different to the pack but under the surface being no different to those around and ultimately looking a bit stupid (in reference to their doping policy) :D

User avatar
ave
Posts: 2134
Joined: Sun Dec 28, 2008 10:15 pm
Location: Hungary

by ave

Maybe Sky have both left and right cranks with Stages sensors? Not sure if the unit would fit between the rings and the arm, but maybe.

But even with only one leg measured during races, I'm pretty sure they'll know each riders' pedaling balance, so can correct if neccessary.

nathanong87
Resident master of GIF
Posts: 3405
Joined: Mon Jul 18, 2011 2:44 am
Contact:

by nathanong87

Guerdi wrote:The new fizik volta looks really good IMO


that thing looks horrible

lookin' like some battle droid head on the seatpost
Image

Geoff
Posts: 5395
Joined: Sat Dec 13, 2003 2:25 am
Location: Canada

by Geoff

Roger, Roger (+1)...

pastronef
Posts: 1640
Joined: Fri Mar 11, 2011 11:33 am
Location: Asti, ITALIA

by pastronef

http://news.pocsports.com/2014/01/10/po ... rtnership/

3 year deal for Garmin with POC for both helmets and sunglasses

User avatar
djconnel
Posts: 7917
Joined: Wed Sep 26, 2007 1:57 pm
Location: San Francisco, CA
Contact:

by djconnel

DanW wrote:What does your data show djconnel? Sorry, I'm too sleepy to digest it all properly!


I have a Garmin Vector I got but I'm embarrassed to say I've not installed it yet. It won't fit on the Lightning cranks I have on my race bike, and on my Ritchey Breakaway, I'm afraid the pods will get destroyed taking the bike on the Caltrain bike car. I definitely plan to try it out reasonably soon, though (I'm running more this month).

But a 2% change in L-R balance (for example, 50-52%) is still a 4% error in estimated power (since power from the L leg is doubled). That's a big deal for a pro rider, I'd think. And it's not just change over time, but change under different conditions, for example fatigued versus fresh, or climbing versus flats.

by Weenie


Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓    Broad Selection ✓    Worldwide Delivery ✓

www.starbike.com



KWalker
Posts: 5722
Joined: Mon Dec 28, 2009 8:30 pm
Location: Bay Area

by KWalker

You guys are missing the point- they probably do not care about L/R balance as its a complete red herring. The units are probably valuable because they don't need a compact and standard SRM and swap cranks often in stage races. With Stages they can use the same arm regardless, making it easier to have power for every single stage.

Also, Stages accuracy during highly variable efforts probably doesn't matter as Sky does not race cross, do criteriums, or technical MTB races. It probably works just fine for what they need. Also, no need to worry about calibration and elevation.

Also for maintenance and transport it has got to be a world easier in terms of support required to monitor the battery life of units, when units have been calibrated, etc., which is an inherent flaw of SRM's design until they make a unit that has a user replaceable battery and is easier to user calibrate.

Regarding L/R balance, I've been monitoring mine for around 6 months with my P2M. In the meantime I've gotten fit adjustments of all sorts from a well-regarded fitter. The verdict? Despite my cleat being 5mm off on one side and having an asymmetric (as confirmed by x-rays) pelvis, my balance never gets worse than 48/52. Even with the tweaks the rides vary between 50/50 and 49/51 and during hard, anaerobic efforts it stays fairly linear. It really doesn't matter all that much nor is it really changeable. After months of adapting to position changes it looks like everything else is identical on my QA plots for similar rides.
Don't take me too seriously. The only person that doesn't hate Froome.
Gramz
Failed Custom Bike

Locked