The Marston Sunbeam Club & Register Forum

General Category => Beamers General Discussion Forum => Topic started by: rosie sunbeam on March 24, 2017, 09:41:20 AM

Title: decompression leaver
Post by: rosie sunbeam on March 24, 2017, 09:41:20 AM
Hello beamers can anyone tell me where i can buy a replacement de compression leaver, this is the leaver on the engine, not the handlebars, and also the
spring my bike is the 350cc model 8 series 2 1937 cheers terry
Title: Re: decompression leaver
Post by: timraindle on May 12, 2017, 11:11:59 PM
On the same subject, am looking for clear pictures of the decompressor set up for a friends 1935 model 9. Even better if anyone has any drawings/dimensions, but any good pics of an original cam and actuating arm assembly would suffice.
Tim
Title: Re: decompression leaver
Post by: wessex_man on May 13, 2017, 05:31:25 PM
I am assuming you have the cam arrangement with the peg. Sorry no dimensions as don't have them anymore but hopefully pictures will help
(http://i29.photobucket.com/albums/c258/wessex_man/kickstart%20ratchet/ex%20lift%201935_zps13ky2og8.jpg) (http://s29.photobucket.com/user/wessex_man/media/kickstart%20ratchet/ex%20lift%201935_zps13ky2og8.jpg.html)
(http://i29.photobucket.com/albums/c258/wessex_man/kickstart%20ratchet/ex%20lift%201935%202_zps1edgm4g6.jpg) (http://s29.photobucket.com/user/wessex_man/media/kickstart%20ratchet/ex%20lift%201935%202_zps1edgm4g6.jpg.html)
Title: Re: decompression leaver
Post by: meddlesomebilly on May 13, 2017, 07:43:25 PM
There is a photo of the valve lifter components on page 21 of Beaming No 7 Sept 2011, Fig 1 applies.
if you haven't got a copy let me know on tony@tonypashley.co.uk and I'll send you a scan.
Title: Re: decompression lever
Post by: AndyB on May 14, 2017, 02:49:08 PM
You can see it on the main MSC&R site here:

http://www.marston-sunbeam.org/technicalNotes/exhaustValveLifter.html

HTH

AndyB