WD Motorcycle forum

Start a New Topic

Author

Comment

Apr 19, 2015 - 8:21PM

Question.... Can you date an M20 gearbox ??

Good evening,

I have now received my 1940 M20

I can't stop playing with it ( )

QUESTION..... Is it possible to date my gear box ie ... Is it original to the bike or a post war example??

I would post a pic but I havnt yet signed up to the picture thingy ! .....,

Watch this space 👍

Kind regards,

Mark

email (option): towersmark84@yahoo.co.uk

Ian Wright

Apr 19, 2015 - 8:31PM

Re: Question.... Can you date an M20 gearbox ??

Hi Mark...Does it run?..Is it complete?....

The 'WD' gearbox, for want of a better description, has a vertical clutch operating lever that pivots on a pin fitted into two cast lugs on the gearbox outer cover...

This is quite distinct from the post war (post 1947) gearbox which had a horizontal operating arm that pivoted within the cover....

There were no major changes to the M20 gearbox throughout the war years and they were not numbered for a particular machine or marked with a date stamp...Ian

email (option): ian@wright52.plus.com

Mark Towers

Apr 19, 2015 - 9:37PM

Re: Question.... Can you date an M20 gearbox ??

Hi Ian,

Thanks for the helpful post

I have also found some useful info in the 'technical' section (I will visit there first before firing off a question in future)

Yes the gear box is complete Ian ! Not sure if it's working yet though....

I eagerly fired her up yesterday to hear that famous sound ....... it took me a fare few goes before she started ... I had a hell of a kick off her too.... and fuel vapour spat out of the carb. ( I think I flooded her) and didn't use enough advance ?

When pulling the clutch in ... I can't shift her up into first gear ! The gear foot pedal vibrates on the cogs but won't engage.

I'm currently browsing old gear box posts to learn more.

Many thanks!

Mark

email (option): towersmark84@yahoo.co.uk