Originally Posted by
Sangetsu
I started out using a set of rollers which uses two smaller rollers on the front. The smaller rollers greatly increased resistance, and it took a fair amount of effort to pedal. Letting up on the pedals, the wheels immediately slowed, and balance became difficult.
Sounds like American Classic hybrid rollers. I had a set of those briefly and it was work to ride them. Never rode rollers after that since I was never into training.