Help. I’m almost embarrassed to be starting a thread such as this, but I’m at my wit’s end.
I’m starting to question the accuracy of my trainer. Having since “upgraded” to a Wahoo KICKR Snap (bought used from what appeared to be a reputable seller), my FTP has dropped some 30w in comparison to what I was training at on my old dumb trainer. Power there was measured virtually with a Kinetic inRide.
I’m finding the correlation between my FTP when measured by the inRide sensor verus the KICKR Sanp to be unrealistically different. DC Rainmaker has done tests on both devices, and while neither were/are as accurate as a quality power meter, both were within +/-10%. Not sure how they compare to the other.
I just came off a rest week and am seeing threshold heart rate at 213w. I’m a Cat3 cyclocross racer and I just cannot believe these numbers that I’m seeing with the new to me KICKR Snap. Previously I had my FTP between 280-320w when using my fluid trainer and inRide. This FTP, give or take 5-10w correlates with how competitive I am in Cat3 races.
Now I’m around 250-260, if I’m on a great day, on the KICKR. However, just this morning I bailed on a very doable workout in Carson where my HR @ 213w was 90% of peak. This is a first.
Comparatively, I’m seeing greater decoupling on my Z2 endurance rides and also lower HR values at given wattages within my Z2-Z3 power.
Furthermore, I seem to be getting weaker coming off a well-executed rest week. Something I’ve never experienced in 3 years of training on TR. Regardless of which measuring device is accurate, the point is, I’m struggling through workouts that I used to relish in.
Is it possible that my KICKR Snap is showing wildly inaccurate numbers?