I used trainnerroads virtual power before I got a powermeter. It worked for training, seemed to be fairly repeatable but totally inaccurate. As soon as you start getting interested in power its a slippery slope and you will end up with a power meter eventually.
For what its worth, my virtual power ftp was about 50w out
I used trainnerroads virtual power before I got a powermeter. It worked for training, seemed to be fairly repeatable but totally inaccurate. As soon as you start getting interested in power its a slippery slope and you will end up with a power meter eventually.
For what its worth, my virtual power ftp was about 50w out