Frame flex on mag trainer?

I would try emailing the Orbea w/ this question...

The Beater said:

Hey guys

I am stuck inside for the winter and this year I decided to put my Orbea Occam Carbon on the wind trainer instead of the single speed surley so I can use the gears. The only problem is that there is a noticable amount of flex when pedaling, I would guess a 1 cm or maybe a little less.

I am worried the the continued stress of the flex will wreck either the carbon or the rear swing arm. Does anyone know if it is safe to continue or should I remount the single speed which is a surley 1x1

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My main worry would be damaging the pivots on the bike. Why not put the Surley on, your Occam is way to nice for a trainer.

FWIW: Technique

This season our team has trainers and have used them on crappy weather days during December when lots of colds and flu were popping up. This means that I can watch each of my racers and focus on their position and such. The trainer reveals all kinds of things, most notably, those riders who tend to "quad hammer" and not spin circles, those who tend to stiff-arm and the like.

I'm wondering if this flex is revealing a need to refine your technique?

I'd use the SS and change resistance on the trainer.

Any bike will flex on a trainer, just like it flexes on the trail. It's just more noticeable on the trainer. My main worry is the trainer not allowing the chain stays to flex properly.

ya I have noticed the flex on the surley before but since it is a hardtail and well the frames are cheap I never worried. The main reason I wanted to use the Orbea this year is the gears are nice since my mag trainer does not have a remote resistance level so I have to take my foot off the pedal and kick it to where i need it.

I also use the surley for getting to work so it has salt and sleet on it.

I think in the end i will try and rig a remote some how and put the surley on instead. I would hate to mess up the orbea.