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  #1  
Old 01-03-18, 17:05
Lolat492 Lolat492 is offline
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Repair of cracked magnesium alloy wheel?

I have a 15mm crack in the rim of a1970's Dymag magnesium wheel which leaks down 5 psi over 12 hours.

I am asking here if anyone has had such a wheel material repaired successfully.
I have contacted Ian Jemison if they can do this, but anyone with a technical understanding of this cast material and such a repair please?
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Old 01-03-18, 17:24
Rob Stevens Rob Stevens is offline
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If the crack looks like that on the inside I'd be inclined to fill it with glue and keep an eye on it.
But then again you know me
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Old 01-03-18, 17:32
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redturner37 redturner37 is offline
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In this day and age Graham we all try to save money and it is no doubt something that I would consider. However, the last thing going through your mind when you are going off road is to be thinking, should I have welded that rim. If you were unlucky enough to touch a kerb at that part of the rim it would snap off leading to rapid deflation...
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Old 01-03-18, 18:18
No Imagination No Imagination is offline
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According to the chap who runs http://tpcs-magnesium-refurbs.co.uk/ , he was Production Manager at Dymag for more than 20 years, so looks like the proverbial no - brainer maybe?
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Old 01-03-18, 18:20
Lolat492 Lolat492 is offline
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Ian Jemison can do it no probs.
I've used him before and he did a great job.
Some of the rims old and new he has rescued are far worse than this rim.
It will be kept as a spare set.
The rims I've just drilled to fit the Lola are great and air tight.
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Old 01-03-18, 18:31
mikegleaves mikegleaves is offline
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You may wish to have a chat with these people http://www.precision-welding.co.uk/. I don't think there are many people who will repair mag wheels after previous failures and resulting litigation. From my limited experience with this material all be it 25 years ago, is before you repair one crack do a detection test for others as you will be lucky if there isn't more lurking hidden away under paint etc.
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Old 01-03-18, 18:32
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redturner37 redturner37 is offline
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What about the people who repaired your upright Graham.....
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Old 01-03-18, 20:11
Delboy Delboy is offline
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I don't think you can beat Bob at Concept Racing in Ross,give him a call.
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Old 01-03-18, 20:51
Lolat492 Lolat492 is offline
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TCPS list Jemisen as a repairer!
The upright was cast alloy Dave, other side is magnesium, but I imagine the welder could do it.
It was arranged through a specialist who I think is no more.
I'll stick with Jemison as I have experience of him.
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Old 02-03-18, 12:22
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PP Racing PP Racing is offline
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9323 glue repair

I agree with Rob - if that was mine due to the location close to rim edge I would glue repair first and see if that holds before attempting a weld repair.
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