Originally Posted by Seattle Forrest (Post 22144442)

I don't think the concern was that it's difficult to change pedals, it was longevity if he's doing it every time he wants to ride the other bike.

Originally Posted by CliffordK (Post 22144626)

Is it possible to put one Garmin XC200 pedal on each bike most of the time, then only use both pedals when you think you want a little extra accuracy?

Originally Posted by CliffordK (Post 22144626)

Is it possible to put one Garmin XC200 pedal on each bike most of the time, then only use both pedals when you think you want a little extra accuracy?

Originally Posted by MinnMan (Post 22144606)

Not sure of your use of the word "longevity" here, but frequent swapping has no effect on pedal life.

And if you meant the time required for the change, it's just a smidgen more than the time required to pump up your tires.

Originally Posted by Seattle Forrest (Post 22144673)

Seemed to me he was worried that swapping pedals once a week until forever is going to wear them out some how.

Originally Posted by chaadster (Post 22144790)

I’ve been swapping my Assiomas between bikes regularly since ‘18. No issues with longevity/durability insofar as I can tell. My experience isn’t definitive, but we see a lot of folks swapping, and no one complaining of failures because of it, so I’d call it a non-issue.

Originally Posted by Fastfwd01 (Post 22143574)

For starters, I'm not completely convinced that I 'need' a power meter. I'm not sure the expense is really worth it, but I am a Strava (premium) user and I do sort of enjoy the stats. I am motivated by seeing the numbers and if it would help promote my fitness goals then maybe I should be at least paying more attention to what it would take to achieve that.

If I just had one bike to setup this may be less of a problem, but I ride my 2015 Cannondale Synapse aluminum 105 for the vast majority of my miles. I also have a 2015 Cervelo R5 Dura Ace that I try to preserve for the occasional weekend ride and events like century rides, etc.

I can do some wrenching on my bikes, but digging in to this has my head swimming. I know that pedals would be the easiest solution for swapping between bikes, but I'm not sure how much swapping would be advisable. I could understand making a swap with the change of season, but swapping pedals a couple times per month seems like that might not work out in the long run.

I also run SPD pedals on my bikes. I really only go for distance and so far I've just favored the SPD. I just can't imagine going on a 100 plus mile ride and being in the middle of nowhere stranded on those road bike shoes that you can't walk in. I've got a nice pair of Sidi mountain bike shoes that seem plenty stiff. I would consider switching to road, but that's an added expense to the mix in the least to buy new shoes and switch to road shoes. I'm aware that Garmin has the Rally XC pedal option, but man those cost almost as much as my Cannondale cost me back in 2015.

I might also consider that both of these bikes are getting to be a little older now too. I could conceivably keep maintaining them for the rest of my life, but I'm sure at some point I'm going to get an itch to try something else. That just lends more to the argument for going with pedals.

Otherwise, these are the best 'solutions' that I've found so far. I actually asked the sales dept at Power Meter City and these were their recommendations based on what they sell.

For the Cannondale with the BB30 FSA Gossamer cranks:
Stages FSA SL-K BB30 Power Meter Or power2max NGeco ROTOR ALDHU Road Power Meter Crankset

For the Cervelo:
Power2max NGeco ROTOR 3D+ Road Power Meter

Those could total between $1k and $1.3k to setup both bikes and that's not even providing a true dual sided power measurement if that is even important in the first place.

I'm a little surprised that there isn't a less expensive option for the Cannondale. I'm not entirely sure why I would spend $540 for a single sided crank arm solution when I might just upgrade my entire crankset to a 105 with whatever adapters the BB30 might require? My old FSA cranks have seen quite a few miles at this point. Something like this: PRECISION PRO Ride Ready Power Meters

I do see that there is information that the Shimano crankset power meters just aren't very good on the drive side. They're probably just 'too stiff' for a power meter gauge to work. The 105 is probably the worst from a design standpoint as far as that goes because it is just so beefy.

I could also skip the Garmin pedals and go with these instead:

Favero Assioma DUO Power Meter Pedals

Just find some nice road shoes and only swap for the occasional event.

I apologize for the long post. I guess I probably have to decide for myself if it is worth it or not to a large degree. I am curious what others might have to say about this particular situation. Some of you guys know way more about this than I do.

Originally Posted by chaadster (Post 22144080)

Stages are accurate and reliable enough to be used by pro teams, standards well beyond the OP’s interest, demands, and need. Further, to the limited extent which Stages does have accuracy issues, it’s to do with measuring crank-side power on Shimano hollow cranksets, which certainly seems to be *another* good reason for the OP to just run left side power meters.

Originally Posted by jaxgtr (Post 22144837)

A friend of mine uses this...Interesting little device and easily swaps between bikes as it has the capability for multiple bike setup.

https://powermetercity.com/product/p...d-power-meter/

Originally Posted by RChung (Post 22144879)

Both of these sentences are incorrect and the first sentence might have two things wrong in it.

Originally Posted by chaadster (Post 22145023)

Sorry, not interested.

Originally Posted by mattcalifornia (Post 22144836)

The only issue would be if you were worried about cross-threading the pedals in the cranks. I suppose the theoretical risk of that increases the more you screw and unscrew something.

Originally Posted by asgelle (Post 22145052)

Pointing out errors isn’t for the benefit of the poster, who is usually past convincing, but for any reader who might be unaware of the mistakes.

Originally Posted by MinnMan (Post 22144926)

Possibly not as inaccurate as one might guess, but not really directly comparable to a pm that measures force
https://www.dcrainmaker.com/2016/03/...h-review.html#

Originally Posted by Seattle Forrest (Post 22144442)

I don't think the concern was that it's difficult to change pedals, it was longevity if he's doing it every time he wants to ride the other bike.

Originally Posted by mattcalifornia (Post 22144836)

The only issue would be if you were worried about cross-threading the pedals in the cranks. I suppose the theoretical risk of that increases the more you screw and unscrew something.

Originally Posted by chaadster (Post 22145083)

There was no pointing out, only obtuse, unsubstantiated assertion. You may find that kind of childish stuff compelling, but I’m still not interested.

Originally Posted by jaxgtr (Post 22145100)

That review is 5 years old and on 1st gen, but my friend told me the v4 is seems pretty accurate compared to his PM pedals. Said they lined up pretty good.

Originally Posted by Fastfwd01 (Post 22145129)

That was my concern. The more it gets done the more potential to become sloppy doing it. For me at least that would be a concern. I'm not sure how it could otherwise go wrong, but if it is possible I might find the way. I'm actually not all that bad of do it yourself type, but it would concern me if I were doing it too often.

It does still seem like a viable 'solution' though. I would just have to be prepared to likely skip a few rides with the Cervelo having power possibly.

Originally Posted by chaadster (Post 22145183)

Sky and UAE both used Stages meters. I didn’t say they used them exclusively, all the time, or whatever else foolish qualifier you want to throw in, only that pro teams used Stages, and there are plenty of references and pics of riders’ bikes at races to substantiate that with even cursory Google inquiries.

As for whether the 5 year old accuracy test of the Stages gen 1 left side unit which Chung references has any relevance to my assertion that there is sufficient accuracy for the OPs needs, I’ll simply point out that Chris Froome won the ‘16 Tour de France on the dual-sided LR system Stages launched to the public in ‘17.