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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
HD Decompressors (Solenoid)
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<blockquote data-quote="greg brillus" data-source="post: 171692" data-attributes="member: 597"><p>I think there are a few issues going on here that are not so obvious to the untrained eye........The teeth width is very narrow.......far less than a car type ring gear........this equates to a weak tooth for a start......the pinion does need to mesh quite tight against the main ring gear.......because the starter pinion gear is not supported when it comes into mesh, the force driving the pinion away from the main gear is very large, in other words, the pinion is trying to climb away from the ring gear thus......if the gap opens up which it will, the tooth contact is poor and the teeth start to bend.........My short answer would be to make the teeth longer and simply move the chainwheel/clutch basket further outward........my friend says that is not possible, but i feel there has to be a way to do this........another 2 mm would make a big difference........I'm sitting on the fence about the cush drive........It seems mostly needed to save the shock torque passing into the main shaft.......on the original set up the ESA would ramp up fully one way when you hit the starter button, but when the engine fires, the ESA goes the full opposite direction sending a massive shock through the chain and the starter/ring gear........this sounded like the starter was being hit with a massve sledge hammer........ At first i thought we had fixed my friends bike (2015 Godet 1330) but it appears the issue is still there........Another point I feel is that the carby's are wrong for these bikes........The Mikuni is a great carby but in this instance not at all.........Better carb would be a 36 mm pumper Dellorto........a couple of twists of the throttle to squirt some raw fuel down each inlet, and when you hit the starter, the engine would fire much better than with a simple lever type choke that makes the engine rev too much on a cold engine........once hot then the carb is near too lean for a good start.......If I had one of these bikes i would change the carb's before anything else. Some of these issues are not easy to solve.......Cheers.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 171692, member: 597"] I think there are a few issues going on here that are not so obvious to the untrained eye........The teeth width is very narrow.......far less than a car type ring gear........this equates to a weak tooth for a start......the pinion does need to mesh quite tight against the main ring gear.......because the starter pinion gear is not supported when it comes into mesh, the force driving the pinion away from the main gear is very large, in other words, the pinion is trying to climb away from the ring gear thus......if the gap opens up which it will, the tooth contact is poor and the teeth start to bend.........My short answer would be to make the teeth longer and simply move the chainwheel/clutch basket further outward........my friend says that is not possible, but i feel there has to be a way to do this........another 2 mm would make a big difference........I'm sitting on the fence about the cush drive........It seems mostly needed to save the shock torque passing into the main shaft.......on the original set up the ESA would ramp up fully one way when you hit the starter button, but when the engine fires, the ESA goes the full opposite direction sending a massive shock through the chain and the starter/ring gear........this sounded like the starter was being hit with a massve sledge hammer........ At first i thought we had fixed my friends bike (2015 Godet 1330) but it appears the issue is still there........Another point I feel is that the carby's are wrong for these bikes........The Mikuni is a great carby but in this instance not at all.........Better carb would be a 36 mm pumper Dellorto........a couple of twists of the throttle to squirt some raw fuel down each inlet, and when you hit the starter, the engine would fire much better than with a simple lever type choke that makes the engine rev too much on a cold engine........once hot then the carb is near too lean for a good start.......If I had one of these bikes i would change the carb's before anything else. Some of these issues are not easy to solve.......Cheers. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
HD Decompressors (Solenoid)
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