Scottxs wrote:
Welcome to the snake pit. Is R/L (both legs) power important to you? Do you need .5 watt accuracy? (it doesn't exist). Sounds like you don't want to change your set up and you want to use different wheels......Slap on a Dura Ace Stages PM and call it good......and save a truck load of money.
You massively underestimate the impact of assuming symmetry on accuracy, and more importantly, consistency. Either that, or you're trying to be deceptive with your 0.5W remark.
We're not talking about being 0.5W off, or even 5W off. We're talking a lot closer to 50W for many riders without resorting to any extreme outliers. If this were consistent it would be a problem for performance prediction but would work for most other purposes....but it's not.
How much is a Dura Ace Stages PM? I doubt you'll save much over something like Assioma Duo or P2M NGeco, which actually measures all of your output.
I don't think it's terribly important to know what each leg is doing independently, but if you want to measure power, you should measure total power of both legs or else why bother? - May as well just use HR or perceived exertion if accuracy and repeatability are irrelevant to you.
[Alex_korr]Unless you are a committed speedplay user, I do not see why anyone would buy anything but Assioma Duos for $600 and use it on as many bikes as you want/got.[/quote]
Yeah, I'd probably go with those, but I do use Speedplay and don't want to change. P2M NGeco isn't transferrable but aside from that it ticks all the boxes for value, simplicity to use and repeatability.