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Alfusious

bent bike help

7 posts in this topic

I have a '00 650R that has been unstoppable for 4 years now but I thought it might be a good time for a good overhaul.

To my surprise once I got as far as the rear subframe, I noticed that the damn thing was bent to the right (facing the rear) substantially. Now normally I have no reservations about 10 lbs of persuation on the end of 30" of good old Hickory, but I thought there might be a gentler way that some of you have deduced to aid in said situation.

I could also use suggestions on how to hold the thing down tight enough to try bending it back on the bike?

Any help would be appreciated.

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I might try putting it in a vice first ,hate like hell to brake some part of the frame for a hundred $ part ya know

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Any decent body shop can probably straighten it right.

And the price will be surprisingly cheap if YOU break it down so the bent parts are VERY easily accessible.

I agree you have to anchor it really well.

Ways we used to fix bent crap:

When I used to race desert trucks we bent a lot of stuff and we just used a hydralic ram to push...harbour freight about 100 bucks back then...Or chain it really well to a telephone pole lol then use a come along to your car frame and "gently" pull.We measured 4 cross points in an "X" to tell how out of square it was. Might try that.

I don't know if yours is symmetrical but if it is, thats a couple ways to fix it.

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Welcome to the club... I know my subframe is bent, and has been for some time now...

I tried bending mine back, but aluminum is such a pain to work with. I was able to stick a large bar across mine, and anchored the base of the subframe to the wall to keep the bike from moving, and bent away. I don't think it really did much, but I like to think it did... :thumbsup:

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Subframe bending 101:

- Subframe on bike, tank and seat off

- Bike leaning against wall, near opening (sticking backwards out of your garage,

leaning against the garage door frame)

- 5' 2x4

- two friends: one to hold the bike upright, one to sight down the frame

- notch 2x4 if necessary with a sawzall

- start bending, 1/2" at a time, and checking for alignment

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I don't know how much bend you are talking about, but you may want to take look at the thread linked below. Mine is tweaked a little and it is basically brand new. It must have came that way because I don't think I've done anything crazy enough yet to warrant a bent subframe. It seems to be a common issue.

http://www.thumpertalk.com/forum/showthread.php?t=275556

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