Power Meters / Powermeters (SRM, Powertap, Quarq, Ergomo, Vector, Stages, power2max, P2M, 4iii, InPower, Cinch)

I'd have thought they needed accurate data even more. Especially given the much vaunted pursuit of marginal gains.

Thats a big win for Stages. I'm not sure the system has won the confidence of the all important cash carrying MAMILs. But if they've replaced SRM at Sky.....

Is Stages more accurate? Don't follow this closely, as never plan on owning a powermeter.

His stem. As normal.

I've totally started doing this. In the same way that I copied the Radcliff head twitch. Seems to stop my stiff neck issues.

If I ride into a parked lorry I will sue the bastard.

Is Stages more accurate? Don't follow this closely, as never plan on owning a powermeter.

Not in theory.

SRM has 8 (I think) tensionmeters in the spider. ie. between chainrings and crank arms.

Stages has a tensionmeter (more than 1?) in the non driveside crank arm. It then assumes right power = left power. To calculate total power.

But it is very well priced, light, and a piece of piss to install. If they did anything in a 165mm, preferably a Rotor. I would have jumped on it I reckon. Although the P2M is not that much more expensive.

Is Stages more accurate?

I've not kept up with the details recently but my understanding is that stages is considerably less accurate and while it's fine for comparing your own rides against each other they are useless if you want to compare data between riders.

I've totally started doing this. In the same way that I copied the Radcliff head twitch. Seems to stop my stiff neck issues.

If I ride into a parked lorry I will sue the bastard.

Funnily enough, Michele Ferrari detects a connection between the two:
http://www.53x12.com/do/show?page=indepth.view&id=139

Even the rhythmic reclining of the head by Froome, interpreted by most as the continuing need to scrutinize the power meter on the handlebar, may be a breathing technique, already used by the British marathon runner Paula Radcliffe, to ensure an optimal pulmonary ventilation.

@Furry presumably you went for the slightly older model?

Did we not have this here?
From Sky's recent Majorca training camp. SRM have been dropped from the Team Sky web site too.

Obviously once they'd heard I'd tried 'em out and given 'em up, they followed. Get some original ideas Sky, ffs!

@Furry presumably you went for the slightly older model?

They badgered me into buying the new one.

Well they sent me an E-mail regarding the pre-order.

I have no idea why I paid the extra. Other than a slight weight saving, and not needing to dremel my aero chainrings.

I'd be fitting vectors to the same chainset as your mate's. Is there no allen key option to install pedals? Sounds like it's not a very good idea, if I want to swap them from road to track bike at least once a week.

Maybe Stages have plans to increase the accuracy of their product, or develop a professional level product to sell at a premium price to over weight MAMILs to record their Strava times on, and thought that partnering with Sky could help them achieve this.

I doubt that Stages as is, is accurate enough for Sky, but I don't know enough about power training to know if this genuinely matters. (My view, which I'm happy to be disabused of, is that as long as you're using the same product for all your power training purposes, then the actual genuine power figures don't matter, as what you want is consistency).

Funnily enough, Michele Ferrari detects a connection between the two:
http://www.53x12.com/do/show?page=indepth.view&id=139

I like to think I have a really heavy brain.

TBH its probably a result of playing rugby hooker, and the training that involves. Both running and cycling over distance stiffens my neck. So I need to develope a habit that keeps it moving frequently.

I refuse to copy his elbows out form though. Always reminds me of the animated yorkshiremen from monty pythons.

I'd be fitting vectors to the same chainset as your mate's. Is there no allen key option to install pedals? Sounds like it's not a very good idea, if I want to swap them from road to track bike at least once a week.

It's a very good idea. Pedal spanners are how you fit pedals, not poxy allen keys, even if it is an option.

I'd have thought they needed accurate data even more. Especially given the much vaunted pursuit of marginal gains.

But it is very well priced, light, and a piece of piss to install. If they did anything in a 165mm, preferably a Rotor. I would have jumped on it I reckon. Although the P2M is not that much more expensive.

http://www.cyclepowermeters.com/stages-shimano-105-57005750-2310-p.asp

Nope nothing in 165....

Insert troll face

I'd be fitting vectors to the same chainset as your mate's. Is there no allen key option to install pedals? Sounds like it's not a very good idea, if I want to swap them from road to track bike at least once a week.

If you're really interested I have pics and details of the clearance issues. He hasnt had any problems. But Garmin require more clearance than he managed. The plug port is covered buy a rubber bung, that could catch the chain if it wobbled. This has however not happened, and we were unable to force it to happen on the turbo.

The plug port is position wher you would usually have a allen key hole.

There is a tool that will fit a torque wrench. But it seems to be a US thing, and tricky to get here.

Hes travelled with them, and its been fine. But if you install a pedal slightly lose. The data suffers.

Maybe Stages have plans to increase the accuracy of their product, or develop a professional level product to sell at a premium price to over weight MAMILs to record their Strava times on, and thought that partnering with Sky could help them achieve this.

I doubt that Stages as is, is accurate enough for Sky, but I don't know enough about power training to know if this genuinely matters. (My view, which I'm happy to be disabused of, is that as long as you're using the same product for all your power training purposes, then the actual genuine power figures don't matter, as what you want is consistency).

I would have thought the question is whether they need to compare riders in terms of absolute values.

Individual ride to ride suff would be fine. As would comparing the shapes of power charts between riders.

TBH I doubt its rocket science to calibrate out any error between riders

It's a very good idea. Pedal spanners are how you fit pedals, not poxy allen keys, even if it is an option.

But pedal spanners dont do torque, and standard spanner heads dont fit. Weve tried.

Right on cue;

http://www.teamsky.com/article/0,27290,17545_9115530,00.html

Probability of an embarrassing return to SRM part way through the season?

Right on cue;

http://www.teamsky.com/article/0,27290,17545_9115530,00.html

Surprising.

But pedal spanners dont do torque, and standard spanner heads dont fit. Weve tried.

Which provides a handy conclusion:

Vector >>>

Yeah sky thing is interesting.

Though the people in Aus are still on SRM.

What, all the people in Aus? Even Crocodile Dundee? Woah.

It's logical, given Australia is so far behind the rest of the world*.

*bar NZ of course.

Invented WiFi. Your argument is void.