Author Topic: barrel for a10  (Read 604 times)

Offline harley1450

  • Moving Up
  • **
  • Join Date: Oct 2014
  • Posts: 15
  • Karma: 0
barrel for a10
« on: 19.03. 2015 18:48 »
hi  im looking for a replacement barrel for my  a10 motor, mine has several broken fins .. would like to keep as is so looking for a thin flanged one ; theres one on ebay with a bore of 70. 48, but not sure what overbore this is any ideas people, also are all a10 barrels interchangable .thanks curly ...

Online muskrat

  • Global Moderator
  • Wise & Enlightened
  • **
  • Join Date: Jul 2009
  • Posts: 8102
  • Karma: 106
  • Lake Conjola NSW Oz
    • Shoalhaven Classic Motorcycle Club Inc
Re: barrel for a10
« Reply #1 on: 19.03. 2015 19:05 »
G'day harley1450. All A10 barrels are interchangeable, big/small fin, thin/thick flange. Why nog get your fins repaired? I just got 3 fins repaired for $80. Just need to find a donor.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
Australia
Muskys Plunger A7

Offline harley1450

  • Moving Up
  • **
  • Join Date: Oct 2014
  • Posts: 15
  • Karma: 0
Re: barrel for a10
« Reply #2 on: 19.03. 2015 19:25 »
Cheers for that Muskrat, had thought about repair but they are broken almost at the main casting, so not to sure if i can find a cheap doner i would have a go nothing to loose..

Offline Rocket Racer

  • Wise & Enlightened
  • *
  • Join Date: Jun 2009
  • Posts: 1401
  • Karma: 16
  • A kiwi with a racing A10 rig and too many projects
    • NZ Classic Sidecar Racing
Re: barrel for a10
« Reply #3 on: 20.03. 2015 06:55 »
There must be some Brit members with a dead donor barrel but if you get stuck I've got quite a few donor big "fins" from a barrel on the shelf and can send one back to the motherland of beesa's; might pay to post an image of the barrel showing the missing fin (s?)
A good rider periodically checks all nuts and bolts with a spanner to see that they are tight - Instruction Manual for BSA B series, p46, para 2.
New Zealand

Offline harley1450

  • Moving Up
  • **
  • Join Date: Oct 2014
  • Posts: 15
  • Karma: 0
Re: barrel for a10
« Reply #4 on: 03.05. 2015 18:10 »
Have just got a scrap barrel, and will be attempting to repair mine ........ next problem how do you check if oil pump is working ok when engine is stripped, ive had it apart and cleaned it and it looks fine but it is not free turning like i would expect it to be .... any ideas please .... Curly..

Online bsa-bill

  • Wise & Enlightened
  • *
  • Join Date: Mar 2006
  • Posts: 5379
  • Karma: 61
Re: barrel for a10
« Reply #5 on: 03.05. 2015 18:27 »
Quote
ive had it apart

that would do it

little cogs need to marked somehow before taken out, they need to go back as they came out to spin free.
However I have done the same and although stiff at first it seemed to free up after a while and has covered many miles since
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline harley1450

  • Moving Up
  • **
  • Join Date: Oct 2014
  • Posts: 15
  • Karma: 0
Re: barrel for a10
« Reply #6 on: 03.05. 2015 20:03 »
Hi Bill
you say yours was tight at first, but could you turn it by hand on the bench ....mine i cant ..
curly.

Offline Rocket Racer

  • Wise & Enlightened
  • *
  • Join Date: Jun 2009
  • Posts: 1401
  • Karma: 16
  • A kiwi with a racing A10 rig and too many projects
    • NZ Classic Sidecar Racing
Re: barrel for a10
« Reply #7 on: 03.05. 2015 20:44 »
Hi Bill
you say yours was tight at first, but could you turn it by hand on the bench ....mine i cant ..
curly.

A mate is just fitting an SRM pump and the paperwork with that mentions it is only free turning while the engine turns forward. The worm gear will typically creep up the body if rotated backwards. But forwards it should be free turning. Unless it is keep it on the bench.
A good rider periodically checks all nuts and bolts with a spanner to see that they are tight - Instruction Manual for BSA B series, p46, para 2.
New Zealand

Online muskrat

  • Global Moderator
  • Wise & Enlightened
  • **
  • Join Date: Jul 2009
  • Posts: 8102
  • Karma: 106
  • Lake Conjola NSW Oz
    • Shoalhaven Classic Motorcycle Club Inc
Re: barrel for a10
« Reply #8 on: 03.05. 2015 21:09 »
I find if you do the screws up finger tight and spin the shaft then tighten the screws little by little whilst spinning the shaft. A good dose of light oil helps. Spin only in the direction it works and once done it should spin easy with your thumb.
Cheers

When asking a ? not related to the topic please start a new topic in appropriate board.
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
Australia
Muskys Plunger A7

Offline edboy

  • Valued Contributor
  • ****
  • Join Date: Oct 2012
  • Posts: 426
  • Karma: 3
Re: barrel for a10
« Reply #9 on: 03.05. 2015 22:09 »
i would strip the gears as metal can become inbeded in them and also check for burghs around the drive casting