I am in the market for a new power meter for my cross bike. After much deliberation, I’m going to go with a Power2Max spider based. My road bike currently has Assioma pedals and the pedals are what I’ve been using with TR using power match. Here’s my question and potential workaround. I’ve done all my FTP tests and workouts with the Assioma. So if I throw my cross bike and new P2M on the trainer, the power readings will be off. My thought is that I can put both power meters on my cross bike and do a few rides, then analyze the power readings myself to find a differential, maybe even at a few different power levels if the slope is off by a good but. Once I have a differential, I can adjust the TR workout based on what bike is on the trainer.
For example: If the Assioma is 10W higher at 200W and 15W higher at 350W. That’s about 5% at both. When I mount the cross bike, I just lower the TR intensity to 95%. This way I can switch bikes if I feel like it and get the same TR workout. Maybe this could be a feature in the future for TR. Have multiple bike settings with an FTP for each, and you just select the bike and the workouts will be adjusted automatically. Anyway, I figured if I get a PM for my mtb as well, I can repeat this process with the pedals and mtb PM and get a similar offset.
What do you guys think? Or should I just stick 1 bike on the trainer and do an FTP test and stick with it?