Author Topic: A10 thick flange barrel  (Read 4887 times)

Online muskrat

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Re: A10 thick flange barrel
« Reply #15 on: 28.02. 2010 19:58 »
Looking good Scotty, wise move with the barrels. All future projects top secret, say they belong to a friend.
Cheers
'51 A7 plunger, '57 A7SS now A10CR, '76 XT500, '77 AG175 '83 CB1100F, '81 CB900F project.
Australia
Muskys Plunger A7

Offline 1660bob

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Re: A10 thick flange barrel
« Reply #16 on: 28.02. 2010 20:24 »
MG- I made some enquiries with SRM recently (well 4 months ago) regarding A10 barrels,their website lists them, but the relevant page is obscured by a large "NOT IN PRODUCTION" sign.I spoke to one of the staff there as I like many, could also use a decent set .The chap at SRM explained that problems with porous castings are the issue, as he said "BSA had their own foundry and any rejected barrels went straight back in the melting pot to be re-cast", I assume from this that casting iron has a high rejection rate due to porosity, and thus small production runs would be too costly..... They have done it before though, (according to the SRM web page under "Special Products") "using the original BSA" moulds ?, so perhaps they will yet make some, we live in hope.....Bob

Offline MG

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Re: A10 thick flange barrel
« Reply #17 on: 28.02. 2010 20:36 »
Bob, thanks for the info. Let's hope the best. Fortunately I have found a decent set on ebay in the US that I'm using on my A10 now.
1955 A7 Shooting Star
1956 A10 Golden Flash
1961 Matchless G12 CSR

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Offline BSA_54A10

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Re: A10 thick flange barrel
« Reply #18 on: 01.03. 2010 21:27 »
One little thing that oft gets overlooked is when you "improve" the bike by fitting the thick fin barrels your original pipes will need a little tweaking to compensate for the exhaust ports now being a little higher.
Bike Beesa
Trevor

Offline MG

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Re: A10 thick flange barrel
« Reply #19 on: 02.03. 2010 07:36 »
Quote
One little thing that oft gets overlooked is when you "improve" the bike by fitting the thick fin barrels your original pipes will need a little tweaking to compensate for the exhaust ports now being a little higher.

I don't think so, the overall height of the barrels is the same, just the flange is bit thicker. Otherwise using the thick flange barrel would lower the compression ratio, too.
1955 A7 Shooting Star
1956 A10 Golden Flash
1961 Matchless G12 CSR

www.histo-tech.at - Restoration, Repairs, Racing

Austria

Online trevinoz

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Re: A10 thick flange barrel
« Reply #20 on: 02.03. 2010 20:46 »
I agree with MG.
                               Trev.