Originally Posted by
cycledogg
I was advised to get a power based wheel set. That way you could swap out wheels between the trainer bike to race bike. Otherwise setting up a crank base power option you will have to use one bike as a trainer/racer. Unless you want to take the time to swap cranks per need. Comments?
If you have the same BB on both bikes then swapping cranks isn't particularly difficult. However, I use different length cranks on my road and TT bikes, and for me shorter TT cranks decreases overall drag more than a fancy rear wheel, so if I went the crank-based power meter route I'd need to have two of them.