Author Topic: Breather...again!  (Read 1304 times)

Offline BSAA10

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Breather...again!
« on: 28.01. 2016 07:17 »
Hello  Do you guys take your chaincase breather to the rear mudguard, to the ground, or to a container bottle? I have aa 1960 A10 Rocket Goldstar Thanks

Offline terryg

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Re: Breather...again!
« Reply #1 on: 28.01. 2016 07:51 »
Chaincase breather? Do you mean the outlet from the primary chaincase end of the cam tunnel?  Which is the main engine breather outlet that drops oil onto the secondary chain.

If so, none of my engines has the spigot tube in place so there's nothing to connect a drain pipe to.
Terry
'57 'SR', '59 SR, '63 RGS

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Re: Breather...again!
« Reply #2 on: 28.01. 2016 08:37 »
I've tapped mine on both my A10 engines so I can run breathers (currently only fitted to the race engine) and I run Bunn breathers so this is only an intake through a filter in a plastic bottle (bottle required for scruitineering). I exit methanol polluted air out of the rocker box to another catch bottle .

On a road engine I probably wouldnt bother with fitting a breather hose.
On my beesa preunit single I run my breather (copper line) into the back of the oil tank.
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 Greybeard

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Re: Breather...again!
« Reply #3 on: 28.01. 2016 09:27 »
On my plunger engine there is a pressure relief pipe in the oil tank that is routed down to the gearbox sprocket I'm not aware of another breather on the engine.

Offline BSA_54A10

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Re: Breather...again!
« Reply #4 on: 28.01. 2016 22:25 »
The engine has a breather.
It comes out just in front of the secondary drive sprocket.
The crankcase has an oiler.
It comes out of a banjo on the back end of the primary chaincase

Which one are you talking about.
Bike Beesa
Trevor

Offline scotty

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Re: Breather...again!
« Reply #5 on: 28.01. 2016 22:38 »
Here's a pic of the crankcase breather exit port

Some have the spigot some do not




Scotty

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Offline chaterlea25

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Re: Breather...again!
« Reply #6 on: 28.01. 2016 22:40 »
Hi,
Quote
I have aa 1960 A10 Rocket Goldstar Thanks

To the best of my knowledge and info RGS models were introduced for the 1962 model year

http://www.britbike.com/bsapitstop/dating/post1960.html

??
John
1961 Super Rocket
1963 RGS (ongoing)

Offline BSAA10

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Re: Breather...again!
« Reply #7 on: 07.02. 2016 06:09 »
Yes I know sorry its a  replica and I did mean crankcase! I'll just direct it to the ground. Thanks

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Re: Breather...again!
« Reply #8 on: 15.02. 2016 05:03 »
as someones gone to the trouble of fitting a spigot, I'd be tempted to run a hose off it over the top of the chain guard so you can see if anything comes out  *dunno*. But I've never seen one with a spigot so believe this is a mod.
For race motors all orifices must typically be plumbed to breather bottles
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 magicflem

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Re: Breather...again!
« Reply #9 on: 16.02. 2016 00:28 »
I wouldn't bother with spigots and pipes.
If your oil pump is in good order and you drain sump after extended storage nothing should exist from this orifice.   
1930 BSA B30-3 Side Valve Girder (being restored)
1955 BSA A10 Road Rocket
1955 BSA A10 Golden Flash
1956 BSA A10 Road Rocket
1951 BSA A10 Golden Flash
1956 BSA DB32 Gold Star Clubman
1958 BSA A10 Super Rocket
1961 BSA C15 (being restored)
1961 BSA C15 Star "America" (being restored)
1961 BSA A10 "Big Valve" Super Rocket (being restored)
1963 BSA A10 Rocket Gold Star