raleigh motorcycle

[graemed]

hi
can anyone tell me what thread type is used on my 1928 raleigh 350 side valve, i thought it was bsw but it appears to be something else.


any help much welcomed.

graeme d

[Rex]

Not much BSW I wouldn't think, but probably plenty of BSF and BSCY. BSW is too coarse for general use on a vibrating bike...

[Goldy]

If you measure the diameter and pitch you can determine the thread from this web site
http://www.britishfasteners.com/threads/bsf.html

[cardan]

Hi Graeme,

Most of the cycle threads (called, by the way, BSC, BSCy, or occasionally CEI) will be 26 tpi from 1/4 to 1/2". However watch out for the occasional 20 tpi thread in sizes like 7/16 or 1/2" - these are also cycle thread even though you will be told they are American UNF). As Rex suggests you might also find some BSF. BSW will only appear where threads are tapped into aluminium alloys (crank case end of barrel studs, base of magneto) and maybe a few 1/4 odd bods here and there.

The hexagon sizes are likely imperial (BSW/BSF).

Leon

[Bomber]

Leon + 1

[Rex]

Just a thought. Where the O/P referred to "BSW" I wonder if he was using BSW as the generic interchangeable (and incorrect) term for "Imperial" as Americans (for example)  always seem to do?
You there, Graeme?

[graemed]

thanks to all this has made life much easier.

[wink]

Some TV quiz recently said somebody set up making pushbikes in Raleigh Street, Nottingham.
Are there any other vehicles named after places?

[Bomber]

Dneiper?

[Rex]

West Hartlepool 250?

[wetdog]

humber

[slyvestor2]

The Peel, its the smallest car in the world and its made on the Isle of Man.

[Goldy]

NUT motorcycles from Newcastle upon Tyne

[wetdog]

BSA ?

[Bomber]

Greeves Silverstone.... tenuous. (Manx Bonneville Thruxton Daytona etc etc)