Show whole topic Dec 18, 2018 5:39 pm
M70 Offline
Member
Registered since: Dec 04, 2007
Location: Silchester, England


Subject: Re: M45 Distributor Skew Gear
Mark, I was interested in the backlash on the cam, the distributor bearings were also shot as well as it being a "cheap Chinese copy", I didn't need a dial indicator to tell me it was shot but my gears were OK. On advice from Martin Jay, Distributor Doctor, I went for a 23D6 with the advance and retard welded up. I put a LED inspection lamp to check the look of the dynamo gear and then used to engineers blue to check the mesh. Taking the dynamo off is relatedly simple but it you still can't see the gear mesh. If you are replacing one gear better to replace in pairs obviously. I always thought/was told, you lost 20% of the power with no magneto, all I can say is the performance was identical without the BTH mag. Since then I have fitted a Scintilla GN6 and that has been a huge improvement too. I have the original Rotax distributor and BTH magneto wrapped-up under the bench. I wish I had put a decent distributor on the M45 years ago! Best wishes,