Originally Posted by
wphamilton
Wouldn't it be fairly easy and inexpensive to simply switch wheels and coast down on a level track?
Depends on the magnitude of the difference in rolling resistance. I've seen good results from coasting down a long hallway but it requires either very good balance or a three- or four-wheeled cart. It's easier to use a bike with a power meter mounted on a bike trainer or rollers with a front fork mount.