fernacticus Posted January 24, 2016 Report Share Posted January 24, 2016 I live in Wisbech, Cambridgeshire. I am happy to take some detail photos if you want some reference from an existing project. Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted January 24, 2016 Report Share Posted January 24, 2016 I live in Wisbech, Cambridgeshire. I am happy to take some detail photos if you want some reference from an existing project. Thanks will pm you. Quote Link to comment Share on other sites More sharing options...
ohmyquads Posted February 4, 2016 Report Share Posted February 4, 2016 Thanks for the info so far. I've recently acquired a 242 as an unfinished project. After finding and building parts I am finally at the point where I can try to start her. I can't get neutral though. Seems like this may be a common problem from what I've read. It doesn't feel like it is changing gears at all. So tossing up between trying to kick it over with the clutch in, or trying to roll start it, or pulling the whole thing apart to see what is going on. Any advice would be well appreciated. Meanwhile, procrastinating...... procrastinating..... Quote Link to comment Share on other sites More sharing options...
ohmyquads Posted February 12, 2016 Report Share Posted February 12, 2016 Hello again, I have sorted out the above gearbox issue, by moving shims and turning the first gear on the drive shaft around (the right way?) so that it doesn't engage in neutral. Now having a no spark situation to deal with. The stator, magneto and capacitor were off the bike when it arrived. I've set it up right from what I can tell. Is there a simple way to determine the optimum position of the stator? I've attached it using the old screw marks on the slotted holes as a guide. Have been reading on another forum that the motoplat system has a weak spark as there is no coil to boost it. So it relies on the speed of the magneto to create sufficient voltage in the stator for discharge from the capacitor. Next step will be to thoroughly check every inch of wiring for breaks. Has any one tried adding a coil to the set up, or once they are running is it not a problem? Quote Link to comment Share on other sites More sharing options...
baldilocks Posted February 13, 2016 Report Share Posted February 13, 2016 242 was a good bike, not much between one of them and a 240 Fantic. Only problem at the time was when the kick start gear failed dealers struggled to get replacement parts. If you can get parts now it will be a great twin shock bike Quote Link to comment Share on other sites More sharing options...
fernacticus Posted February 13, 2016 Report Share Posted February 13, 2016 Are you talking about an electronic system or points? Either way you will need an ignition coil. It bolts up behind the headstock in the loop of the frame. If it's points then it's the same as a 200/242, if it's a Motoplat electronic system it's probably off a 304, which is what I am running. Cheers Quote Link to comment Share on other sites More sharing options...
ohmyquads Posted February 16, 2016 Report Share Posted February 16, 2016 (edited) Yes it is a Motoplat electronic system. One thing I've noticed is that there is an arrow on the stator pointing clockwise. I think this is to indicate the direction of the flywheel rotation. As it is mounted on the left side of the bike, my magneto flywheel travels anti-clockwise. Can anyone please confirm this? I have the piece which bolts on behind the steering head and connects to the spark plug, can't tell if it is OK or not till I get the stator sorted. Any information would be much appreciated. The bike is a Cota 242, M39 engine. Edited February 16, 2016 by ohmyquads Quote Link to comment Share on other sites More sharing options...
ohmyquads Posted February 18, 2016 Report Share Posted February 18, 2016 Well, I have had confirmation from Steve at UK Motoplat that the arrow does indicate the direction of flywheel travel. So I'm now looking at a reworked stator for 135 pounds with postage. I've seen that the same stator was used on a 1982 KTM250. They were probably used on several european bikes around the early eighties. Meanwhile I've changed the original flat head screwdriver type M6 bolts on the clutch cover for cap heads with allan key holes - much easier to tighten up. Can't wait to kick this baby over..... Quote Link to comment Share on other sites More sharing options...
exile Posted June 27, 2016 Report Share Posted June 27, 2016 Hello again, I have sorted out the above gearbox issue, by moving shims and turning the first gear on the drive shaft around (the right way?) so that it doesn't engage in neutral. Now having a no spark situation to deal with. The stator, magneto and capacitor were off the bike when it arrived. I've set it up right from what I can tell. Is there a simple way to determine the optimum position of the stator? I've attached it using the old screw marks on the slotted holes as a guide. Have been reading on another forum that the motoplat system has a weak spark as there is no coil to boost it. So it relies on the speed of the magneto to create sufficient voltage in the stator for discharge from the capacitor. Next step will be to thoroughly check every inch of wiring for breaks. Has any one tried adding a coil to the set up, or once they are running is it not a problem? Hi, you sound as if you have gone into the bike in some depth! I have just started mine, I removed the primary case to find a washer in the bottom !!!! no damage, but at the same time, cannot find a home for it? the clutch has been off at some point as the tab washer has been butchered and the centre nut was loose. the problem I have is that there is only one shim under the clutch basket but the drawing shows 2, I have the 3mm one that sits inside the castle drive to the basket, any words of wisdom please all the best242.pdf Quote Link to comment Share on other sites More sharing options...
fernacticus Posted July 3, 2016 Report Share Posted July 3, 2016 It looks like it came out of the back of the clutch. Do you have a parts list for your 242? I have a PDF version I could send you. Quote Link to comment Share on other sites More sharing options...
exile Posted July 4, 2016 Report Share Posted July 4, 2016 Hi, thanks for the reply, the strange thing is that the I/D is the same as the thread on clutch centre nut. I have bought a new 3mm thk washer that goes behind the clutch, there is also one inside the basket isn't there? it would be great if you could send me a drawing that you are confident is correct. Have you stripped your clutch down before? any does and don'ts please? Many thanks robayres1958@btinternet.com Quote Link to comment Share on other sites More sharing options...
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