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Cast wheels ...

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Cast wheels ...

Post by matt86 on Mon Apr 02 2012, 18:25

I have spotted that 2 of my wheels have a crack in , but has not totally broken out .

What is the best way to repair them ...? I could mig it but would not be that good of a weld on cast ... i was thinking i could braze it though .

any ideas , matt

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Re: Cast wheels ...

Post by kevjhnsn on Mon Apr 02 2012, 18:44

cast welding is hard and a i shall not swear to do as you have to heat the cast before welding it and then cooling off as slow as poss other wise it will just crack again and possably worse than it was before
ive seen people weld cast and as its cooling break into 5 pieces like a hand granade going off
special rods and welding technics for cast and the rods arnt cheap either
kev


Last edited by kevjhnsn on Mon Apr 02 2012, 18:47; edited 1 time in total

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Re: Cast wheels ...

Post by matt86 on Mon Apr 02 2012, 18:46

kevjhnsn wrote:cast welding is hard and a i shall not swear to do as you have to heat the cast before welding it and then cooling off as slow as poss other wise it will just crack again and possably worse than it was before
kev

its not a big crack no structural ... so just want to fill it in to stop getting worse .

matt

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Re: Cast wheels ...

Post by kevjhnsn on Mon Apr 02 2012, 18:51

mike or jonesey will be the boys to ask as they have had more years at this job and probably had engine blocks ect repaired
and mikes not far from you so he may now a localish man for the job for you
kev

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Re: Cast wheels ...

Post by JONESEY on Mon Apr 02 2012, 23:13

Get yourself some cast rods black coated ones are best . V the crack out then put in oven to warm up.
Then weld, just let cool down on its own.
Jonesey

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Re: Cast wheels ...

Post by stationary stu on Tue Apr 03 2012, 10:06

I have a pulley in getting repaired at present and the guy that's doing the job has said the same as Kev and hopes that new cracks don't appear.

Matt if it's not structual I think I'd drill a very small hole at each end of the crack if possable to stop it spreading then use chemical metal to fill the crack.

Stu.

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Re: Cast wheels ...

Post by Capstan on Wed Apr 04 2012, 12:39

stationary stu wrote:I have a pulley in getting repaired at present and the guy that's doing the job has said the same as Kev and hopes that new cracks don't appear.

Matt if it's not structual I think I'd drill a very small hole at each end of the crack if possable to stop it spreading then use chemical metal to fill the crack.

Stu.
That's what I would do. I repaired a block with araldite (similar to chemical metal) 20 years ago. Filed it flat and painted it over. You can't even see it was done.

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Re: Cast wheels ...

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