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Trainers: How secure do you tighten your bike to them?

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Trainers: How secure do you tighten your bike to them?

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Old 12-27-05, 07:40 PM
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A02
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Trainers: How secure do you tighten your bike to them?

I'm the proud new owner of a Kurt Road Machine, but I'm really concerned about over-tightening the unit to my skewers. Can you over-tighten it to the point where you might harm your frame while using it? I have a lightweight aluminum frame... hence the concern. Right now I basically tightned it as tight as I could... any thoughts, experience, or suggestions?

Thanks a bunch.
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Old 12-27-05, 07:48 PM
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Unless you are HE-MAN, I doubt you'll have to worry about over tightening the the unit... If you have to jump up and down on the lever, then maybe you need to think twice about it because it shouldn't be that hard...
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Old 12-27-05, 07:55 PM
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Yuck... no securing the bike. Use rollers!
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Old 12-27-05, 08:23 PM
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Just tight enough so the bike does not move... if you have a hard time unscrewing the little lever it is a bit too hard...
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Old 12-27-05, 08:35 PM
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Depends on the trainer. On my old Manura mag trainer I crank that knob down until I can see the trainer frame start to flex. Otherwise I get a lot of movement. The trainer is so old that when the mag resistance unit heats up, the rotor inside warps and hits the magnets....what a racket!!!! My girlfriend's newer $80 trainer has a much stouter frame, so I just snug it down 'till the bike won't wiggle.

I don't think there is any way you can bend the bike's frame with a trainer that holds the bike by the skewers. You would have to compress the rear wheel axle so hard that it bent while inside the hub, basically crush the whole rear wheel. Not easy.
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Old 12-27-05, 08:53 PM
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Err....what do the instructions say?

Bob
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Old 12-27-05, 09:44 PM
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i ahve the same question. I have a steel frame bike and can definitely notice the frame compressing when I tighten down the trainer. At least I think that's what is happening. Honestly it looks like the whole bike just gets narrower.
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Old 12-27-05, 09:52 PM
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The instructions were wonderfully non-descriptive in regards to that. Basically, they tell you to tighten it to the frame and that's it. The only thing they were really detailed about was about not tightening the roller to the tire too much. They must have repeated that about 4 times in the directions.
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Old 12-27-05, 10:58 PM
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With all tha power I put out on my trainer, I had to weld that sumb*tch on to my frame to keep from breakin' loose and bustin' through the slidin' glass door.












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Old 12-28-05, 03:50 AM
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Originally Posted by urban_assault
With all tha power I put out on my trainer, I had to weld that sumb*tch on to my frame to keep from breakin' loose and bustin' through the slidin' glass door.

How many watts was that (just for the record)
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Old 12-28-05, 06:01 AM
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Originally Posted by Monument Man
I have a steel frame bike and can definitely notice the frame compressing when I tighten down the trainer. At least I think that's what is happening. Honestly it looks like the whole bike just gets narrower.
That's an optical delusion.....the trainer is bending not the bike
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Old 12-28-05, 07:28 AM
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Bobby Lex
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Trainer flex = O.K.

Lateral movement of rear wheel, not O.K. Tighten hard enough to eliminate lateral movement. Most importantly, make sure the set-screw is tightened, or the bolt can back off in use. Crashing on a trainer is a unique experience! (I speak from experience).

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Old 12-28-05, 08:05 AM
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Originally Posted by ajst2duk
How many watts was that (just for the record)
Well, I normally just try to keep it around 400 watts but recently I'm averagin' 'bout 600 for an hour or so.
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Old 12-28-05, 09:04 AM
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Thanks for the input everyone.
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Old 12-28-05, 09:38 AM
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you actually can mess up a skewer, particularly some ultra light ones. If the trainer came with a skewer use that. If not you might want to buy a cheap skewer ( or get a used one lying around the LBS for a couple of bucks) and use that just on the trainer
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