Originally Posted by
Brian Ratliff
Third, I have no idea why a flywheel will "ruin" one's spin. All you are doing is simulating the momentum you normally get by having the bike in motion on the road. Stationary bikes have only the momentum of the wheels and rollers keeping the wheels turning through the dead spots of the pedal stroke. Bikes in motion have the momentum of your body weight at speed to keep the wheels turning. Adding a flywheel to rollers simply mimics what is already present by a bike in motion.
It was a lot easier to simply jump on the rollers and just yammer away at the pedals with the flywheel mounted, but rollers (with resistance) are for working to remove dead spots in the pedal stroke. Instead of the
whirr-whirr-whirr coming from the Killer-Headwind fan, I focus on a steady, fluid
whirrrrrrrrrrrr. And the more I worked on that, the more my FTP climbed.
What works for me may not work for everyone, but my spin got catastrophically worse during the 2-3 weeks when I used the flywheel, and it took a few weeks of focus to get the fluidity back.