Originally Posted by
collinullrich
I go to the gym and hop on the trainer and spin easy at 80-85 rpm and average 230-235 watts for 2 hours, which I definitely think is in my wheelhouse as I type this. If I were to hop on my bike and do that same effort, I would average anywhere from 17-19 mph on the flats.
Your outside effort equates to around 140-185 W at 17-19 mph riding on the hoods. So your gym bike appears to be reporting incorrect Watts for your effort. At the stage you are currently at, a genuine 235W for 2 hours would not be an easy spin. It would be a major effort. To put it another way, it would equate to around 21 mph on the flat.