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Join Date: Aug 2008
Location: Ann Arbor, MI
Posts: 12,448
Bikes: 15 Kinesis Racelight 4S, 76 Motebecane Gran Jubilée, 17 Dedacciai Gladiatore2, 12 Breezer Venturi, 09 Dahon Mariner, 12 Mercier Nano, 95 DeKerf Team SL, 19 Tern Rally, 21 Breezer Doppler Cafe+, 19 T-Lab X3, 91 Serotta CII, 23 3T Strada
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Trainerroad didn't see variability in resistance with the Fluid2 as a reason not create a VirtualPower curve for it, nor for them not to put significant work in doing so in order to get it as accurate as possible.
I use a Powertap wheel on F2 and don't notice such variable power that I have to shift to maintain power over time, or shift more frequently than I would expect to hit my power zones, so I don't know what all the hubbub over the supposed variability is (unless it's between units; why that though?)
I also find that I have to get pretty deep in the cogs, like 53/13 at 80+ish rpm to do sustained 300w intervals, which is why I said the 53/19 probably isn't very high wattage. I'd guess 180-220w, but that's not based on any serious attention on my part, just a moderately WAG.