aij29
Part of things
Posts: 639
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Hi Guys
I may be buying some Jdm alloys from here but one of them has a slightly bent lip,
Does anyone have any tips for Diy straightening?
Cheers
Adrian
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Rubber mallet!  Success depends on how much it's bent. |
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g40jon
Posted a lot
Posts: 2,569
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as above, but warm the area 1st with a plumbers gas torch. you want it warm enough that you can still just about touch it without burning your fingers. it will make it less likely less likely to work harden and snap. get it too hot and you will change the structure of the metal and be left with £10 worth of scrap alloy
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Jun 18, 2011 19:51:07 GMT
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As above, get it hot first. Don't attempt it without heating it up, it'll likely crack or cause stress fractures otherwise, dependant on the size of the area.
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1989 Mini MG 1275 ~ 1987 VW Polo ~ 1989 Citroen 2CV ~ 1998 VW T4 ~ 2006 Volvo XC70
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aij29
Part of things
Posts: 639
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Jun 18, 2011 20:25:41 GMT
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Would it help if i had a piece of metal the same curve as the wheel lip,
Then hit the metal with a hammer so it spreads the blow from the hammer evenly?
Cheers
Adrian
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Jun 18, 2011 20:31:42 GMT
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Would it help if I had a piece of metal the same curve as the wheel lip, Then hit the metal with a hammer so it spreads the blow from the hammer evenly? Cheers Adrian Yes it would. First rule of metal work is when beating always to use a dolly so it would also be helpfull to have something roughly the shape you want it to be. As others have said heat will prevent cracking but be very carefull not to heat it too far or the metalurgical structure will change and it will become very brittle and then you'd have to anneal it to bring back the toughness. Id also be a little dubious as it could be very hard to get the shape perfect enough to get an air tight seal if it is badly out of shape. |
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aij29
Part of things
Posts: 639
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Jun 18, 2011 20:42:43 GMT
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 Hi Its this wheel Cheers Adrian |
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Last Edit: Jun 18, 2011 20:44:50 GMT by aij29
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g40jon
Posted a lot
Posts: 2,569
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Jun 19, 2011 20:31:28 GMT
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yeah that'll straighten with care. ive done worse. thankfully the J split rims tend to be made out of really good quality alloy.
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stealthstylz
Club Retro Rides Member
Posts: 14,960
Club RR Member Number: 174
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Jun 19, 2011 20:34:49 GMT
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That doesn't look too bad to straighten at all. Just incase you haven't noticed there are 2 flat spots on that wheel.
Matt
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Jun 19, 2011 20:53:09 GMT
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Should be easy enough. Have you spotted the flat spot opposite?
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1989 Mini MG 1275 ~ 1987 VW Polo ~ 1989 Citroen 2CV ~ 1998 VW T4 ~ 2006 Volvo XC70
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Jun 20, 2011 10:26:56 GMT
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steel wheels the same story? I have a set of wellers and need to tidy the rim lips on them prior to eBay....
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1941 Wolseley Not Rod - 1956 Humber Hawk - 1957 Daimler Conquest - 1966 Buick LeSabre - 1968 Plymouth Sport Fury - 1968 Ford Galaxie - 1969 Ford Country Squire - 1969 Mercury Marquis - 1970 Morris Minor - 1970 Buick Skylark - 1970 Ford Galaxie - 1971 Ford Galaxie - 1976 Continental Mark IV - 1976 Ford Capri - 1994 Ford Fiesta
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stealthstylz
Club Retro Rides Member
Posts: 14,960
Club RR Member Number: 174
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Jun 20, 2011 10:31:54 GMT
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I just warm steels up with a heat gun so they're not cold, then knock them back into shape. If you use a dolly behind you can get them pretty much perfect.
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Jun 21, 2011 21:25:01 GMT
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With the alloy, rub some soap on the top of the rim, then heat from below the dent. When the soap starts to turn black it is at the right temperature to knock back into shape
Ive done this with numerous alloy items over the years and not had a problem yet
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I don't WANT TO DIE A GROWN UP!
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Success depends on how much it's bent.
