I used a CycleOps PowerBeamPro for five years until TR sunset its support of that trainer with the switch to the new app. I switched to a Kickr Snap because of a variety of reasons.
It’s been fine, with a little bit of a learning curve. I actually thought it was better than my PBP for my slow-force reps that I did through base, and it was ok through sweet-spot work. I’m now entering into VO2max work, and found that the behavior of this trainer is bizarre. I’m curious if the behavior is similar for all Kickrs because I believe the issue is related to the control system rather than specific to the hardware. OR, maybe this is a new TR control thing, and not a trainer thing??
Normally I try to do anaerobic-capacity efforts (e.g. 30s on/1 min off, or other similar microbursty-type workouts) outside, but I ended up doing a workout indoors because of bad weather. The target was 130%, but I was supposed to go as hard as possible.
I should note that I did this workout in resistance mode, not erg mode. Typically this is better for microbursts, regardless, but I prefer this mode, generally speaking.
- During my warmup, I had a few 30s high cadence efforts, with an irrelevant power target of 80%. When I went to a power targets much higher (maybe closer to 100%, maybe a bit higher), I noticed that the trainer seemed to release resistance and power dropped pretty drastically, no matter how hard I pushed.
- During the work intervals (6x[130% for 30s/easy for 1’]), if I went much harder than 130% for longer than a few seconds (say, 180% for 5-8s), the same thing happened. The trainer released resistance and power would drop, even though I was still going hard. When I bumped up the workout intensity from 100% to 105%, it seemed to be better.
I do not remember having this problem with my old PBP. It seems that this is a controls-system issue, where when the trainer sees that the power is above a certain percentage of target, it releases resistance.
Is this how all other Kickrs work??
As a separate comment, I had 3’ VO2max efforts of 120%, and found I needed to increase the resistance from 20% to more like 30% in order to hit appropriate power. I don’t know if other people need to do the same… I never really had to play with the resistance percentage with my old PBP unless I was doing slow force reps…
If I decide to change to a different trainer, I don’t want want get another Kickr (such as the core) if this is how they all behave…
Thanks for everyone’s thoughts.