Over the last few months I’ve been noticing wide and sometimes sudden variations in the resistance mode. I’ve noticed them while in group (non-banded) rides. And often I see post-ride stats indicating that I reached peaks of 700, 800, or more w/kg. With a post-heart procedure FTP of 140 you can imagine my surprise. I’m riding a wahoo kickr that otherwise has no problems.
Yesterday I did a custom Velopro workout which had me pedaling for 40 minutes at 90 w/kg. I was maintaining a steady pace, but on about 5-8 occasions the power jumped up to about 140 - 160 and I received that urgent message to Slow Down, even though I hadn’t changed pace. The ERG would then correct itself eventually. on two occasions the power showed (or alleged) that my power had jumped to 1100 + w/kg.
I have adopted the policy of doing more frequent spindowns, but this has not corrected the problem.