The version by Mark Cooper has std cases , but unlike the German one , the starter motor from a car is mounted in the rear of the cases . Mark has given me some dimensions of the starter ring outside diameter which will , he says , fit inside the available space . In essence he has used a Suzuki clutch nested inside a belt driven carrier and worked it all out from there . Beauty is it contains a radial springed cush arrangeent . So if you have a reasonable lathe most of the parts can be made in the shed all apart from the cutting of the belt profiles and milling the spring pockets { vert mill ] . My effort is still work in progress as I now need to set the width of the starter ring gear , then have the tooth form from a starter motor cut to the periphery . This is all going on whilst putting together a Norvin so its not a stand alone mod to an existing bike . From his video Marks starter looks the way to go and does not cost the earthThat needs a special crank case
Just answering my own question , got his address , wrote via a Google translation , but have not received a reply . Can now safely assume that this line of enquiry is now closed and will press on with the Mark Cooper designJust had a look at the video of the starter produced by Ernst Hegeler , looks really good . Does anyone out there know of his contact number , he is a German who has no English , but I have a contact who is bi lingual .
Any details ?The guys who have it really sorted are the Irving vincent engineers they have a Yamaha drum selector now that would be worth seeing how that works under a standard vincent gearbox cover...
No I just read the description in an article on the Irving Vincent it does sound interestingAny details ?