ALI welding 'old' Alan

[HeyYou]

I need some advice please.

 

I have a mid 1980s Alan Record road bike. The BB shell has a hairline crack (running from the outside towards the centre for about 2cm). I'd like to restore the bike, but the crack would need to be repaired.

 

I've cleaned it well, with petrol and then alcohol, so there's no residual oil. I've taken it to a guy that does excellent ali welding, but he's asked me to ask around for advice before he does anything.

 

Any advice, short of chucking it!!!

[droo]

According to my source for these things, welding a BB shell or head tube won't last. There's a guy in CT that can do a carbon fibre repair on it that will last, but it's not cheap.

[javadude]

Its no good. I had one that was cracked on every lug. Eventually cut the frame up to see how it was all glued/screwed together.

[Vetseun]

There is a place in Bloem called Weidemans Welding Works. They have repaired many bicycles very successfully.

[HeyYou]

According to my source for these things, welding a BB shell or head tube won't last. There's a guy in CT that can do a carbon fibre repair on it that will last, but it's not cheap.

 

Do you have a name, address, phone number??

[HeyYou]

Its no good. I had one that was cracked on every lug. Eventually cut the frame up to see how it was all glued/screwed together.

 

I had a track Alan repaired in about 1985 and it's still working, though I ride it once a year these days!!!

[HeyYou]

There is a place in Bloem called Weidemans Welding Works. They have repaired many bicycles very successfully.

 

Thanks, it's worth a phone call at least.

[droo]

Do you have a name, address, phone number??

 

I'll post shortly, have to dig it up first...

[Pieterg]

tried to weld a Alu wheel what a Flop.

[G00SE]

Please google welding heat treated aluminum and also what a HAZ is.

Welding heat treated Ali without re tempering it will not work.

[HeyYou]

Please google welding heat treated aluminum and also what a HAZ is.

Welding heat treated Ali without re tempering it will not work.

 

Yeah, I know about this on 'modern' frames, but I don't think mid 80s Alan lugs were heat treated, they're very soft!

[G00SE]

Yeah, I know about this on 'modern' frames, but I don't think mid 80s Alan lugs were heat treated, they're very soft!

 

Ok. Then you have something else to google: Is my Alan Record frame heat treated

It is also important to find out what alloy its made from, as the welding rod should also match the alloy you are welding.

[V12man]

_{Ping steveco1 here on the hub - he can supposedly do it.}

[scott]

after the weld have the whole frame heat treated to stress relieve it and stop it cracking else where

[HeyYou]

_{Ping steveco1 here on the hub - he can supposedly do it.}

 

Thanks, will do

[HeyYou]

after the weld have the whole frame heat treated to stress relieve it and stop it cracking else where

 

Would leaving in a panel beater's (spray painters) paint baking room do the trick???