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Old 05-19-2010, 04:45 PM   #1
1stR6
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Frame damage how to tell?

Ok so I'm gonna pick up a used bike that has been dropped the fairings are scratched up and the tail piece also!! But there could be damage to frame for the tail anybody shed some light on this!? Plz no smart azz answers thanks
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Old 05-19-2010, 04:50 PM   #2
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Give it a good close look over. Look for cracks in welds. The frame might be straight but the subframe could be tweaked which is a common occurance in a wrecked bike IMO.
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Old 05-19-2010, 06:43 PM   #3
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Always look at the steering stops on the head tube in the front.
The lower triple usually has tabs on it that contact with tabs or a pad on the head tube when the steering is turned to it's max in either direction. When bikes go down, they frequently whack the steering to full-stop and can bend/dent/leave damage marks on the stops. Signs of dented, bent or otherwise raped and pillaged stops usually mean it's met mother earth pretty hard.

Always look at the frame tabs or area where the rearsets bolt on. See if the metal looks like it's been stressed from being bent back into position or if you see hairline cracks on the welds. The rearsets are another casualty that you can pretty much count on whacking the ground.

Look at the tabs/mounting area for the rear subframe/seat support. Same thing as the rearset mounts. Looks for re-bent, stressed and/or cracked metal where the subframe bolts to the frame.

Food for thought.
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Old 05-19-2010, 06:48 PM   #4
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You could also roll it through a puddle of water to see if the front and rear wheel track straight . If the frame is jacked like the other post say it would have cracked welds . If your buying a bike that your worried about the frame you should really be worried about the forks ,rims ,swingarm ,sub-frame and possibly engine case damage
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Old 05-19-2010, 06:53 PM   #5
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Strip off all the plastics. Get a bright flashlight. And get a comb.
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Old 05-19-2010, 08:17 PM   #6
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Thanks for all the very good info!! I will look at all of those things.
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Old 05-19-2010, 08:50 PM   #7
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Frames that are badly bent aren't hard to spot. Its the mild bends that cause weird/erratic handling that you have to worry about.

Something that is only a few degrees off can't be seen with a naked eye or manually measured.
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Old 05-20-2010, 05:33 PM   #8
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bump because I think there might be more info out there. EXPERTS please
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Old 05-20-2010, 06:07 PM   #9
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pay close attention to where the front tire sits in relation to the cowling. If the tire is exceptionally close, the neck has been stressed from stoppies etc and the frame is not salvageable.

Look for new parts or "I just got these rear sets, put on these clip ons...."


String alignment if you have the time, patience and dont drive them wild.

Otherwise, let Motorcycles Unlimited examine it for free before purchase. Its not always possible to catch everything without pulling plastics but it makes a big difference when a 14yr old nerd tries to remove a trojan from his computer vs an IT genius.
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Old 05-21-2010, 12:12 AM   #10
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Quote:
Originally Posted by CaligoneTx View Post
pay close attention to where the front tire sits in relation to the cowling. If the tire is exceptionally close, the neck has been stressed from stoppies etc and the frame is not salvageable.

Look for new parts or "I just got these rear sets, put on these clip ons...."


String alignment if you have the time, patience and dont drive them wild.

Otherwise, let Motorcycles Unlimited examine it for free before purchase. Its not always possible to catch everything without pulling plastics but it makes a big difference when a 14yr old nerd tries to remove a trojan from his computer vs an IT genius.
Cali, "YOUR THE VOICE OF A GENERATION"
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Old 05-21-2010, 01:21 AM   #11
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Measuring in 3d space isn't really feasible without the aid of specialized tooling.
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