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Motorcycle Discussions => British Bikes => Topic started by: Stephen Foster on October 27, 2013, 01:34:05 PM

Title: Fuel pipe arrangemnt for 1950 longstroke B.S.A A7 "Star Twin" (twin carb) .
Post by: Stephen Foster on October 27, 2013, 01:34:05 PM

Wonder if a Member may have a picture or diagram detailing the arrangement of the above please ?
Trying to decide which sections would be copper tube / bends / dimensions , etc ?
The above for a 1950 longstroke twin carb "Star Twin" .

Very little detail information relating to the above ?


Best Wishes,
Steve ..

Title: Re: Fuel pipe arrangemnt for 1950 longstroke B.S.A A7 "Star Twin" (twin carb) .
Post by: wetdog on October 27, 2013, 05:51:51 PM

rare model ive only ever seen one and that was fitted with twin type 276 , I don't know if that was correct but did not notice any copper just black fuel line and the feeds to the undersides where linked

Title: Re: Fuel pipe arrangemnt for 1950 longstroke B.S.A A7 "Star Twin" (twin carb) .
Post by: wetdog on October 27, 2013, 06:04:40 PM

this looks more the job BSA would have made I think

Title: Re: Fuel pipe arrangemnt for 1950 longstroke B.S.A A7 "Star Twin" (twin carb) .
Post by: R on October 27, 2013, 10:07:29 PM

The pics in the reprint of a 1952 Star twin roadtest show what look like flexible tube, neatly down to each floatchamber.
Could be copper pipe though. No loops, whirls or anything, just down then across to a horizontal connection.
Probably cross-connected across to each other too, but that is not so visible.

What does the Parts Book show ?
It will detail each bit, and possibly even illustrate it...

Title: Re: Fuel pipe arrangemnt for 1950 longstroke B.S.A A7 "Star Twin" (twin carb) .
Post by: Stephen Foster on November 02, 2013, 11:25:08 AM

Many thanks for the helpful comments .

"R" My "Star Twin" is the early Longstroke (twin carb) version ..these were discontinued in 1950 in favour of the short stroke single carb model .
Do You have a copy of that road test please ?

Even the parts list is vague & doesnt have details or part numbers for Mine .

Very Best Wishes ,
Steve ...

Title: Re: Fuel pipe arrangemnt for 1950 longstroke B.S.A A7 "Star Twin" (twin carb) .
Post by: R on November 03, 2013, 11:06:48 PM

I did notice that minor technicality.
When I read the article - after pressing post...
Will scan and give a link.
Cheers.

Title: Re: Fuel pipe arrangemnt for 1950 longstroke B.S.A A7 "Star Twin" (twin carb) .
Post by: Stephen Foster on November 05, 2013, 07:50:42 AM

Appreciate that Thanks "R" .

Title: Re: Fuel pipe arrangemnt for 1950 longstroke B.S.A A7 "Star Twin" (twin carb) .
Post by: R on November 10, 2013, 08:40:16 PM

52 roadtest, ~5mb each.

Have fun.

Title: Re: Fuel pipe arrangemnt for 1950 longstroke B.S.A A7 "Star Twin" (twin carb) .
Post by: Stephen Foster on November 12, 2013, 07:38:23 AM

Thanks "R" .
I will print them out later .

Regards,
Steve ...