Originally Posted by
JonathanGennick
Tim, Interesting! Love the photos that you posted. And now I can see from this product ...
https://www.kreitler.com/challenger
... that the rear roller connects to the front. That makes perfect sense now that I see it like that.
Is there a safety aspect to this sort of racing? Do riders ever come off the rollers whilst pedaling all out?
And ... I notice different drum sizes:
https://mrpbike.com/collections/krei...14374491783210
Why would one choose, say, a 2.25" drum over a 4.5"?
Coming off the rollers is more embarrassing than anything else. The bike hits the ground and you jerk forward about a foot then fall on the the ground. There is little momentum to shoot you off anywhere.
Standard rollers are in the 4-4.5" range. Smaller rollers deflect the tires more and create more resistance for a harder workout or race.