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pedal based power meter

Posted: Thu Mar 07, 2019 8:45 am
by WorkonSunday
hi all,

got abit of a silly question. any idea if pedal based power meter (garmin, powertap or assioma) still works if i use a flat cover?

something like this:

Image

image borrowed from road.cc

Thanks/

pedal based power meter

Posted: Thu Mar 07, 2019 8:45 am
by Weenie

Re: pedal based power meter

Posted: Thu Mar 07, 2019 10:11 am
by Ettore
Single sided will start jumping much more than double sided, I imagine, because there is no power on the pedal on the upstroke.

Re: pedal based power meter

Posted: Thu Mar 07, 2019 10:46 am
by mattr
There's very little power on the upstroke anyway. Pretty much zero (or less) for a vast majority of the time.
I doubt it'll make any difference at all.

FWIW i was setting up a single sided stages on a turbo yesterday, wearing flip flops. Nice steady signal.

Re: pedal based power meter

Posted: Thu Mar 07, 2019 11:44 am
by WorkonSunday
ok cool. Thanks guys.

Im convinced that the mearsurement is like some contact patch where the cleat engages the pedal. sounds like the measurement is taken at the axle so it doesnt matter how the force is applied, as long as the axle sense the force, then it will register a signal.

Cheers

Re: pedal based power meter

Posted: Thu Mar 07, 2019 1:37 pm
by NiFTY
If you are riding flats i assume you are nipping to shops or pub. Does it really matter?

Re: pedal based power meter

Posted: Thu Mar 07, 2019 2:32 pm
by WorkonSunday
nope. i have powertap hub already. im trying to introduce the idea of Power measurement to my wife's training. she only rides flats but she switches between a few wheelsets so buying multiple Powertap hubs may not be the cheapest way to go. (no crank based either, her bike has some rotor Aldhu, so it's way too expensive to get InPower. so im trying to decide if i should get pedal based power meter or Power Pod type wind measurement.

Re: pedal based power meter

Posted: Thu Mar 07, 2019 2:37 pm
by mattr
Get a powerpod.
Riding on clipless pedals in "normal" shoes is horrible over any sort of distance. Even with an insert like you've shown.

Added benefit is the powerpod will be easy to swap between bikes. And i guess it's only for an indication rather than any sort of precision measurement?

Re: pedal based power meter

Posted: Thu Mar 07, 2019 5:23 pm
by Sock3t
WorkonSunday wrote:
Thu Mar 07, 2019 2:32 pm
nope. i have powertap hub already. im trying to introduce the idea of Power measurement to my wife's training. she only rides flats but she switches between a few wheelsets so buying multiple Powertap hubs may not be the cheapest way to go. (no crank based either, her bike has some rotor Aldhu, so it's way too expensive to get InPower. so im trying to decide if i should get pedal based power meter or Power Pod type wind measurement.
If she's riding flats, why does power matter?

Re: pedal based power meter

Posted: Thu Mar 07, 2019 5:23 pm
by Weenie

Re: pedal based power meter

Posted: Thu Mar 07, 2019 5:50 pm
by moyboy
yup it will work they don't care what's on it.... power is power.