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Old 11-28-2014, 05:54 PM
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jhnarial jhnarial is offline
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Default Oops I really messed up

I was at my brother in laws and he is re.toring a 1978 mx harley. It had a tiny dent in the side and he asked me if I could help him get it out.
I could not reach the dent with a backer. It was a smooth dent that was proably caused by a knee.
So I thought if I added a little air it would pop right out.i have never tryed this and had my hand on the dent and then heard a pop . So i stopped and turned it over to find this.
PicsArt_1417215127006.jpg
what can I do now? With out cutting it out
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Old 11-28-2014, 06:10 PM
Rick Mullin Rick Mullin is offline
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If you are not willing to cut it open, try pulling a gentle vacuum on it and assist the inner structure at the same time. The crown of the exterior tank is far greater so it should withstand the negative pressure better than the inner structure. With that said, I have never tried this so I give a full disclaimer.
Good luck. Rick
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Old 11-28-2014, 06:40 PM
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I fixed it I my god that freaked me out. It's a rare tank.
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Old 11-28-2014, 07:39 PM
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Kerry Pinkerton Kerry Pinkerton is offline
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Quote:
Originally Posted by jhnarial View Post
I fixed it I my god that freaked me out. It's a rare tank.
How did you fix it Johnny? I suspect it just popped back with some pressure against it?
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Old 11-28-2014, 08:45 PM
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That and some wood and hammering. It's not perfect but it's a dirt bike. Scared me bad thought I was going to have to cut the bottom out.
it was strange I did not add that much air and the bottom was all ribbed out.
It is a aluminum tank.
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Old 11-28-2014, 08:47 PM
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I was going to try pull a vacuum but i was scared it would pull the sides in and I would make a bad situation worse.
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Old 11-28-2014, 09:25 PM
Ken Hosford Ken Hosford is offline
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I have cautioned many against pressure it works like the burden tube in your pressure gauges but not being smooth and consistent it does not work well . congrats on recovery .
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Old 11-28-2014, 09:48 PM
skintkarter skintkarter is offline
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Many years ago, when I had a hairline, waistline, eyesight and libido, I also had a panel and paint shop in a fairly rural area. We used to get a few tractors and quite a lot of farm bikes to repair from the local dealers. Certainly on the bikes, the emphasis was on cost and quick turnaround. We used air quite often to try and get dents out of tanks without marking the paint. The trick was obviously low pressure, but a couple of luggage straps to hold it together (ask me how I knew to use these...) and then with a flat polished hammer, tap around the edge of the dent. Quite often we would get it out and not have to paint the tank. Moaning dealer very happy.
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Old 11-28-2014, 09:55 PM
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I have done some reading on it now. I might have done some research first.
it says no more then 5 lbs of pressure. I thought i did not add that much pressure but i know it was a heck of a lot more presure then 5lbs.
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Old 11-29-2014, 06:31 AM
Jerry Jackson Jerry Jackson is offline
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You might try first filling the tank with water and then apply a vacuum by pumping the water out. That would eliminate high velocity movements when the tank surface begins to move.

Jerry Jackson
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