Running my two powerpods, the Time Trial unit is providing consistent reproducible data with an FTP of about 290 Watts (for my 67 kg). I've tested this by calibration, a 25 and a 10 TT (attached file with race from about 27 minutes).
I'm running a second powerpod, that when mounted on the bars this gives reasonably consistent values. However my road race bike can't take this mount, so I use an out front combination mount due to the profile of the handlebars bars not being round. What I note is consistently higher (+30 Watts or so) values, and I don't know what needs tweaking. I think it is wind scaling that is over-optimistic for the mount. I attach a race file on the same circuit that had a lot of drafting (of course), but I don't believe my NP was higher in the two races compared with the TT.
The TT bike has lower Crr (not much), weighs about a kilo more and has more aero wheels. The road races had drafting, but I was still going hard and the second was basically an FTP test! I'd like the two to match at about 300 watts really.
Can you advise as to what tweaking is needed please for the combination out front mount? I did calibrate with the outfront settings, but still don't get agreement.
- Road races on same circuit
- (412.83 KiB) Downloaded 2 times
- TT race
- (164.66 KiB) Downloaded 2 times