Author Topic: A7SS has no breather fitted. Shape or dimensions?  (Read 465 times)

Offline Peter Gee

  • Valued Contributor
  • ****
  • Join Date: Apr 2015
  • Posts: 268
  • Karma: 1
Blow me..pardon the pun, to discover my 59 A7SS has no pipe fixture where the timed breather exits just next to the magneto. I will have to fabricate something but no parts book illustrates the item.

I guess copper or steel pipe  length is meant to exit there..the bore is smooth so I expect a heat fit driven in. But is it straight piece or tubing, it's dimensions or is it a bend at90 degrees or so?

I accept this is a very arcane and perhaps stupid enquiry.

Offline Peter Gee

  • Valued Contributor
  • ****
  • Join Date: Apr 2015
  • Posts: 268
  • Karma: 1
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #1 on: 12.09. 2018 21:14 »
After intense "Google Images" I discovered it is a gooseneck shape, and copper..must be a standard BSP copper tube dimensionI can work out.

Online bsa-bill

  • Wise & Enlightened
  • *
  • Join Date: Mar 2006
  • Posts: 5362
  • Karma: 61
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #2 on: 12.09. 2018 21:35 »
I think no pipe is standard

I've had three A10s none had pipes other then one I fitted myself (from a milking machine?)
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

Online KiwiGF

  • Last had an A10 in 1976, in 2011 it was time for my 2nd one. It was the project from HELL (but I learned a lot....)
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 1404
  • Karma: 12
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #3 on: 12.09. 2018 21:38 »
I think no pipe is standard

My 56 s/a has no pipe, nor does the spare “ca10” crankcase I have.
New Zealand

1956 A10 Golden Flash EA7-168x, CA10 913x, left BSA together for Liverpool, 5th Dec 1955.

1949 B31 rigid “400cc hot rod” (favourite bike)

1949 C11 rigid, but why!!! (cos it was cheap)

1937 B21, missing parts so mission impossible?

1952 Armstrong Siddeley Whitley for rainy days (with wife).

GL1800 Goldwing not sure why, maybe cos it always starts

Offline Peter Gee

  • Valued Contributor
  • ****
  • Join Date: Apr 2015
  • Posts: 268
  • Karma: 1
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #4 on: 12.09. 2018 22:21 »
Dear BSA and Kiwi, well that yours had no pipes is amazing...perhaps mine is a feature, not a bug!???..so any oil emitted via the breather is just meant to dribble down the back of the TSside? Ugh!

Online Greybeard

  • Jack of all trades; master of none.
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 5791
  • Karma: 32
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #5 on: 13.09. 2018 10:26 »
I think a pipe is supposed to be there to direct oil mist onto the chain and sprocket.

Online bsa-bill

  • Wise & Enlightened
  • *
  • Join Date: Mar 2006
  • Posts: 5362
  • Karma: 61
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #6 on: 13.09. 2018 10:35 »
Quote
I think a pipe is supposed to be there to direct oil mist onto the chain and sprocket.

in witch case there will be a part number ??? there is a breather pipe bolt/nut so you would think there should be a pipe but I'm thinking this was for the previous gearbox attached version where it is shown
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 duTch

  • Ricketty Rocketty Golden Flashback
  • Wise & Enlightened
  • *
  • Join Date: Oct 2011
  • Posts: 4540
  • Karma: 41
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #7 on: 13.09. 2018 11:16 »
 The parts lists I have clearly show well hidden breather pipe and 'P' clip;

  ‘Late A10’    Part #'s Breather Pipe    67-09222
                                'P'  Clip              67-0923

 Also in the '49-'53 & '54-57 books for Plungers, S/A Road Rockets and SS

 Pipe shown as straight- bend to suit.....  *conf2*..... the'P' clip attaches via a set-screw (#1-4606) to the underside of the Chaincase above the drive sprocket to act as a primitive and probably highly ineffective 'chain-oiler'
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Online berger

  • Resident Legend
  • *****
  • Join Date: Nov 2017
  • Posts: 868
  • Karma: 6
  • keith from chesterfield 500ss cafe morris 8
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #8 on: 13.09. 2018 12:13 »
iv'e got two shooting star engines and never seen a breather pipe until I tapped the hole that exits on the clutch side and directed the mist onto the final drive chain. I think it was a plungy thing . but it doesn't exit on the timing side

Offline RayC10

  • Moving Up
  • **
  • Join Date: Oct 2017
  • Posts: 51
  • Karma: 0
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #9 on: 13.09. 2018 17:54 »
I didn't think that SAs had a pipe, never seen one anyway, just breath hrough the Stoma! Plungers do though, least mines got one.

Offline muskrat

  • Global Moderator
  • Wise & Enlightened
  • **
  • Join Date: Jul 2009
  • Posts: 8066
  • Karma: 106
  • Lake Conjola NSW Oz
    • Shoalhaven Classic Motorcycle Club Inc
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #10 on: 13.09. 2018 21:12 »
G'day fellas.
They all fell out because the P clip is a prick to get in.
I put a thread in the hole and made fitting a to screw in then attach a hose to it.
Cheers
'51 A7 plunger, '57 A7SS now A10CR, '76 XT500, '77 AG175 '83 CB1100F, '81 CB900F project.
Australia
Muskys Plunger A7

Offline Peter Gee

  • Valued Contributor
  • ****
  • Join Date: Apr 2015
  • Posts: 268
  • Karma: 1
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #11 on: 20.09. 2018 22:37 »
Got it Musky..won't bother with the tapping...JB Weld will do a perfect job of making sure the breather pipe does not come out.

Offline BSARGS650

  • Moving Up
  • **
  • Join Date: May 2014
  • Posts: 81
  • Karma: 0
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #12 on: 21.09. 2018 11:47 »
Over many years, all the A7's, A10,s and RGS engine I have had and many miles covered, none had a pipe and never was a bother.....

Online BSA_54A10

  • Wise & Enlightened
  • *
  • Join Date: May 2008
  • Posts: 1917
  • Karma: 32
    • BSA National
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #13 on: 21.09. 2018 12:52 »
There does not seem to be any rhyme or reason to it.
Some do & some don't.
A lot of ignorant idiots put a plug in the hole to "cure the oil leak".
They have also been known to fall out & get tangles in the secondary chain ( not pretty )
On a lot of bikes one of the primary bolts was longer so a P clip could be slipped over the end of it with a nut that you can see & not get any tool known to man onto.
Bike Beesa
Trevor

Online Greybeard

  • Jack of all trades; master of none.
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 5791
  • Karma: 32
Re: A7SS has no breather fitted. Shape or dimensions?
« Reply #14 on: 21.09. 2018 13:39 »
On a lot of bikes one of the primary bolts was longer so a P clip could be slipped over the end of it with a nut that you can see & not get any tool known to man onto.
Check! My method for this is to hold the 'P' clip, spring washer, and nut over the exit hole for the extra long case screw with a finger so most of the work is done by the time the screw is tight. It then takes a couple of small spanner swings to nip the nut up.