calculating watts on a trainer
Hi
I just got a Tacx Flow trainer that measure Watts. Can anyone tell me just how it does measure Watts output.
It seems to me that it measures Watts more based on my cadence than anything else. It can't know what gear I'm in (presumably higher gear means harder pedalling means higher Watt output) so how can it accurately measure Watts...and how accurately does it?
thanks for any help.