BobWard wrote:My thoughts are still with gearbox moving forward as you mention travel down hill was this using the rear brake causing the back drag, please check for tightness of the drive chain as this may confirm that the box traveled forward. Bob
Edit :- Having just seen previous post you can check the drive sprocket teeth if a stray part rode over the drive sprocket you Will see the thee damage to one or more teeth where the object wedge in between chain and sprocket. Bob
Mick D wrote:Hi Dave
If you offer up the parts of the front of the inner case to the bit in situ you'll be able to determine if the force was forwards or backwards, ie which sprocket was involved.
Edited to add: Your first photo suggests the force was rearwards.
rein.heerkens wrote:What are the numbers of the inner and outer chain cases? Maybe I can help.
paul.jameson wrote:To help in getting you back on the road, the inner case is common to all 1936-53 singles, except WD models with the tin cases and 1939/40 250cc models. Any 1936-53 outer case (with the exceptions above) will also fit, although if you use a 1939 onward outer you will need a different clutch dome (of which I have plenty). I would aim to get back on the road then get your 1936-38 outer case repaired in due course.
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