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Indoor trainers and frame flex....(6 posts)

Indoor trainers and frame flex....Macho Man Savage
Oct 24, 2002 7:38 AM
Okay, I'm new to this and don't know much about what a frame can take. I recently got a Cycleops Fluid trainer for my Cervelo Prodigy and noticed the frame flexing back and forth around the bottom bracket while riding. I assume this is normal but I wanted to double check. Does riding on a trainer put a great deal of stress on a frame having the wheels held like that? Thanks.
A great deal of stress...PsyDoc
Oct 24, 2002 9:01 AM
...no, as long as the rear wheels are the only thing that are held by the trainer. But, you are primarily going to be "spinning" in a trainer and not doing all-out sprints...right?
A great deal of stress...Macho Man Savage
Oct 24, 2002 9:54 AM
Yeah, mostly spinning with just a bit of out of the saddle climbing type stuff. Is out of the saddle really bad? The front wheel is in one of those riser blocks. I assume that's okay.
Sure some will disagreescottfree
Oct 24, 2002 10:22 AM
but I see absolutely no reason to stick a 'good' bike on a trainer. Why risk it? A $10 yardsale beater in your size will do the job perfectly. It's not like weight or componentry is an issue. With familiar saddle and pedals, you'll not notice the difference, except aesthetically.

Between gallons of corrosive sweat and frame flex, you're at the very least RISKING harm to your bike for no good reason.

But this argument never goes anywhere. Every expensive bike on this board is apparently lashed to a trainer in winter and surviving happily. Who am I to argue? But you might want to see what Waterford says about it:

http://www.waterfordbikes.com/indexnet.htm
So what do they say about it?Stinky Hippie
Oct 24, 2002 11:21 AM
..The link didn't tell me.

thanks

feel the gin
Sorry. Once you get therescottfree
Oct 24, 2002 11:32 AM
you have to click on Tech Q&A.

What they say is:

Avoid wind trainers which clamp at the bottom bracket. These can be particularly damaging to your bike. Trainers which clamp at the rear dropouts put less stress on the frame.

Supplement your wind trainer with a set of rollers which, since they have no such clamping, take less of a toll on the frame. Rollers help you develop important handling skills which you can't get from a regular wind trainer.

Use your "beater" frame on your wind trainer. This can mean many more seasons for your Waterford frameset.

Tell us if you plan to buy a Waterford for use with a wind trainer. We can substitute extra-strong chainstays and seatstays which compensate for the extra stress and strain