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Rim drive trainers -- damage rims?(6 posts)

Rim drive trainers -- damage rims?gnailuh
Dec 11, 2002 9:30 AM
I'm looking to get a trainer... but always heard that they tear up tires... Then I saw these rim drive trainers... won't they eat up rims? Anyone used one? Are they safe? Seems to me that damaging a tire is better than tearing up rims... what do you think?
They don't clinch the rims nearlyOldEdScott
Dec 11, 2002 10:35 AM
tight enough to hurt them, IME.
re: Rim drive trainers -- damage rims?AllUpHill
Dec 11, 2002 3:47 PM
I have some experience with one of those. If the pressure of brake pads doesn't damage rims, there's absolutely no way the soft rubber wheels on the trainer are going to hurt a thing.

On the side, I believe the very best way to go with one of these trainers would be to build up a cheap rear wheel just for the trainer: 700c (27" ?) mtb or "hybrid" type rims--no tire needed--so you get a wider rim for the trainer to grasp (the trainer has kind of a weak grasp on the typical narrow road-rim width). But this would also give you the increased resistance of a road-diameter wheel (resistance is a good bit weaker on normal 26" rims, which is too bad since the primary benefit of this type of trainer is that mtb folks can avoid chewing up knobby tires).
they don't grab tight, but they constantly grab...gnailuh
Dec 11, 2002 7:08 PM
true, they don't grab tight as breaks, but you only break a VERY small % of the time. if you ride for 2 hours on these, it's still ok?

thanks.
I have a gazillion hours on a rim drive, no hint of a problem nmOldEdScott
Dec 12, 2002 8:51 AM
brake pads scrape, the rubber wheels roll.jw25
Dec 12, 2002 9:15 AM
brake pad material is optimized for friction, while the rubber rollers should be softer, for better grip. They roll, though, so wear should be minimal to non-existent.