Sub frame repair

pez

Full Member 2013/2014

Posts: 22

« on: May 22, 2009, 11,46:54 AM »

I need help locating a person that will straighten my sub frame.
I have a KTM 380 that has hit the deck a few times and after fitting a new back tyre last week I noticed the sub frame must be bent at it looks like the tyre has been rubbing on the left side of the airbox, side plate area.
There are no cracks in the sub frame and all the mounts are good. Looking from the rear of the bike its bent to the right.
Or can I do this myself somehow? I don’t really want to get a steel bar and try as I feel this may break the welds.
Any help would be apreatiated. Grin


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Peter r

Full Member 2013/2014

Posts: 2482

Re: Sub frame repair

« Reply #1 on: May 23, 2009, 12,58:06 AM »

Don't throw it down as much!!
It helps to keep the frame straight.


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Tim Dykes

Abbeyard Officer
Administrator

Posts: 1859

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Re: Sub frame repair

« Reply #2 on: May 23, 2009, 09,24:28 AM »

Do it yourself, it cant be to bent if you've only noticed it while doing a tyre.
Use a length of wood and push/pull it into line.
The welds will take it. Wink


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Mat R

Treasurer
Committee 2013/2014

Posts: 1775

Treasurer

Re: Sub frame repair

« Reply #3 on: May 23, 2009, 10,22:53 AM »

Next time, crash on the right. Tongue


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pez

Full Member 2013/2014

Posts: 22

Re: Sub frame repair

« Reply #4 on: May 25, 2009, 10,05:27 AM »

HAHA you try not to crash a 380

But honestly Yes Tim have thought about that but the frame has been welded once before so really dont want to stress it out again. Grin

Would heating the sub frame in an Oven at 230 deg and then a gentle bend back do it?
Thats how I straitended a bent radiator and thats worked for years now without a single leak.


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steve f

Full Member 2013/2014

Posts: 223

Re: Sub frame repair

« Reply #5 on: May 25, 2009, 11,02:39 PM »

Quote from: pez on May 25, 2009, 10,05:27 AM

Would heating the sub frame in an Oven at 230 deg and then a gentle bend back do it?
Thats how I straitended a bent radiator and thats worked for years now without a single leak.

230 deg is no where near hot enough for steel, cold bending would be a better option, just remove the guard and like Tim said and use brute force it wont hurt anything


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