Author Topic: Crack in A10 half width hub  (Read 727 times)

Offline Ilkka

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Crack in A10 half width hub
« on: 22.09. 2014 11:51 »
Hello When i got parts back from painter i saw this crack in front hub. Is it possible to weld it?
Has anybody any experince of this? Thanks for a very supporting forum.

best regards
A10GF 57. Kawasaki 650 1981
Stockholm. Sweden

Online bsa-bill

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Re: Crack in A10 half width hub
« Reply #1 on: 22.09. 2014 11:57 »
Cast can be welded - but I'd say a job for an expert in that situation, could cost more than another hub which would be my choice
All the best - Bill
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Offline muskrat

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Re: Crack in A10 half width hub
« Reply #2 on: 22.09. 2014 12:14 »
As Bill says it could be welded. Another option would be to make a sleeve to shrink over it, 2 thou should be enough.
Cheers
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Online RichardL

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Re: Crack in A10 half width hub
« Reply #3 on: 22.09. 2014 12:29 »
It looks like a P.O. drilled a hole to stop the crack but it didn't work.

Richard L.
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Online Brian

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Re: Crack in A10 half width hub
« Reply #4 on: 22.09. 2014 12:48 »
That small hole is meant to be there Richard, after you put the bearing in and then screw in the retaining plate a small split pin goes through that hole to stop the plate unscrewing.

This has probably been caused by the bearing being belted in crooked, I would vee out the crack and weld it and then do as Muskrat says and machine the outer and then shrink a sleeve over the top. If you just weld it I think it would crack again when the bearing was fitted.

As Bill says finding another hub would be the easiest but this one can be repaired effectively with a bit of work.

Online RichardL

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Re: Crack in A10 half width hub
« Reply #5 on: 22.09. 2014 13:07 »
That small hole is meant to be there Richard, after you put the bearing in and then screw in the retaining plate a small split pin goes through that hole to stop the plate unscrewing.

Oh yeah. I remember doing that.
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Offline Ilkka

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Re: Crack in A10 half width hub
« Reply #6 on: 22.09. 2014 17:10 »
Hello Thanks

I think will try to find another hub, and try to mend this for another project.

nice to get fast reply , the painter sandblasted  the hub and a mistake to paint. it on the inside as well.

maybe good if the crack was old .

best
A10GF 57. Kawasaki 650 1981
Stockholm. Sweden

Online orabanda

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Re: Crack in A10 half width hub
« Reply #7 on: 22.09. 2014 23:48 »
Try and find the look-alike 1968 A65 Lightening brake hub. The shoes are wider, and the brake is significantly stronger.

Offline wilko

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Re: Crack in A10 half width hub
« Reply #8 on: 23.09. 2014 00:14 »
Just wack a sleeve over it. You worry warts!

Offline Ilkka

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Re: Crack in A10 half width hub
« Reply #9 on: 03.10. 2014 18:49 »
: ) nice remark, should i weld it before i wack it ? ; ) (woried twart)
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Stockholm. Sweden

Offline muskrat

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Re: Crack in A10 half width hub
« Reply #10 on: 03.10. 2014 20:48 »
G'day Ilkka.
The only problem I could imagine is that welding/brazing it might expand it to the extent that the bearing would be loose in the hub, depends on the expertise of the welder. For my money I'd just sleeve it. That part of the hub would need to be skimmed first then sleeve made to fit -2 thou".
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline kiwipom

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Re: Crack in A10 half width hub
« Reply #11 on: 03.10. 2014 22:15 »
hi guys/Ilkka, a good welder could weld it no problem also arc welding would normally shrink the item rather than expand it,cheers 
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