Author Topic: Damage to Cases  (Read 1092 times)

Offline pato08

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Damage to Cases
« on: 11.09. 2010 08:33 »
Hi All

Cups of tea all round, I have receintly purchased a BSA A10 basket case, it has some nasty damage to the cases.
Being three of the four bolts that hold the scavenge cover (67-1285) have been broken off. *sad2*
The cases have been welded (badly) and now need to be milled back flat.
Any advise on who to take it to ?? I live in London, but travel is no problem.
Failing that I am looking for case for a 1957 ??

Pato  
1957 Plunger, one of the very rare collector's items ;-)
Australia

Offline trickytree

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Re: Damage to Cases
« Reply #1 on: 11.09. 2010 10:37 »
Im doing the same job on my plunger cases at the momment.  In theory there should be plenty of machine shops up and down the country that can do this type of work but finding one that can be bothered is not always easy. I can do yours if you get stuck but im in Lincolnshire.

Paul.
1965 A65 Bobber
A10 Bitza project

Offline a10gf

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Re: Damage to Cases
« Reply #2 on: 11.09. 2010 13:19 »
My opinion, this can be fixed, but before starting on the repair also check all mating flanges etc for damages & misalignement (oil leaks, quick wear) and see that you've got matching cases (look for the same stamped number on both halves). If in doubt, look for a good & complete crankcase, may save you from lots of hassle in the future.

A10 GF '53 My A10 website
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Offline Mark Parker

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Re: Damage to Cases
« Reply #3 on: 11.09. 2010 14:01 »
Why not bolt it together, get a good file and file it flat, sit the sumpplate on or bolt it on with the good bolt, mark the holes drill and tap them, a tap would only cost a few $ . The sump plate doesn't have to be perfect, just flat so it seals.  The top where the cyl bolts on needs to be square to the crank as well as flat and can also be done pretty easily with a file,  an unmatched set of cases can have the cyls tilted to one side, you need to check it and even it up if necessary.
Mark
Had a nice A10 once, :( now only have the power egg child A65 :(

Offline pato08

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Re: Damage to Cases
« Reply #4 on: 12.09. 2010 09:14 »
Thanks guys for the responses,
A10GF the cases match (530-530)

Im doing the same job on my plunger cases at the momment.  In theory there should be plenty of machine shops up and down the country that can do this type of work but finding one that can be bothered is not always easy. I can do yours if you get stuck but im in Lincolnshire.

Paul.


Hi Paul I'll flick you a p/m might take you up on your offer


Pato
1957 Plunger, one of the very rare collector's items ;-)
Australia

Offline pato08

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Re: Damage to Cases
« Reply #5 on: 11.02. 2011 12:22 »
Thanks for all the replies and offers of help, case have been dropped of the a bloke in Bexley Kent, the problem is I have boxed up all the other part, and now need the measurement for the bolt holes for the scavenge cover (67-1285)
Diagonaly (corner to corner) and verticaly. Centre of hole
Thanks in advance

Pato
1957 Plunger, one of the very rare collector's items ;-)
Australia

Offline dpaddock

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Re: Damage to Cases
« Reply #6 on: 12.02. 2011 14:18 »
The case needs to be well de-oiled before welding. A hot soak in boiling Oakite for a day or so should render it weldable.

David
David
'57 Spitfire


Offline pato08

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Re: Damage to Cases
« Reply #7 on: 12.02. 2011 16:46 »
Thanks David

The bloke doing the work builds and repairs race engines.

Pato
1957 Plunger, one of the very rare collector's items ;-)
Australia

Offline brackenfel

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Re: Damage to Cases
« Reply #8 on: 12.02. 2011 17:39 »
Hi A10GF,
This reminds me of something I meant to check on mine.. Whereabouts on the casing are the number stamped please?  I've looked for mine & haven't found them yet (1961/2 GF), maybe under the front mounting brackets?

Thanks,

Adrian
1961 A10 650 Golden Flash - Blue
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