Originally Posted by
rpenmanparker
There is no reason to assume the resistance on a trainer bears any relation to resistance on the road. So speed has absolutely no meaning on the trainer. Fugeddaboutit! Power or heart rate. Dems de cherces.
If you listen to the folks at Kurt (and some others), there is. I know it hasn't for everyone, but for me it has bore out. Maybe I'm their model weight and riding form and/or more consistent than others in set up. But as I said above, my Kurt Road Machine has come consistently close to my on road speed/power readings and also consistently close ( but lower) than there chart & published formula.