johnh Posted January 30, 2012 Report Share Posted January 30, 2012 Just stripped the engine down to find out what is causing it to drop out of first gear when not under load and found the above. So I have a couple of questions: 1. Is it worth the time/risk trying repair? 2. Are clutch bosses still available? Also, are any of the 125/200 engine parts interchangeable? Cheers John Quote Link to comment Share on other sites More sharing options...
bilc0 Posted January 30, 2012 Report Share Posted January 30, 2012 Crikey 3 missing, They screw in so you may be able to find someone to machine some up for you. Quote Link to comment Share on other sites More sharing options...
lee harris Posted January 30, 2012 Report Share Posted January 30, 2012 par for the course.... normally you can use the old ones---or are they bu%&er$d? Getting new ones turned is easy. Make the threads a little longer, say plus 1 mm and swage them over on the back...you must remove the hub first. If you have the old ones the swaging will have broken off...look for the metal bits and take them out...otherwise they will swim around in the gearbox which isnt good. I use the old ones and use permanent loctite. new ones (hubs) are not available, one on evil bay at the moment. i THINK 125 and 156 are the same HTH Quote Link to comment Share on other sites More sharing options...
lee harris Posted January 30, 2012 Report Share Posted January 30, 2012 http://www.ebay.co.uk/itm/Fantic-125cc-twin-shock-trials-clutch-/280812642078?pt=UK_Motorcycle_Parts&hash=item4161bcdf1e Quote Link to comment Share on other sites More sharing options...
johnh Posted January 30, 2012 Author Report Share Posted January 30, 2012 Thanks for the replies, Crikey 3 missing, They screw in so you may be able to find someone to machine some up for you I would never have guessed that, wonder what their thinking was when they decided to do that? Maybe they knew ham fisted home mechanics like me would get our hands on it so they designed it to be easily repaired!!!! normally you can use the old ones---or are they bu%&er$d? Getting new ones turned is easy. Make the threads a little longer, say plus 1 mm and swage them over on the back...you must remove the hub first. If you have the old ones the swaging will have broken off...look for the metal bits and take them out...otherwise they will swim around in the gearbox which isnt good. I use the old ones and use permanent loctite. new ones (hubs) are not available, one on evil bay at the moment. i THINK 125 and 156 are the same I have the old ones and know a decent enineer so will ask him to make me some new ones. Thanks for the link to ebay I might bid on that to see if they do fit. That chap also has the gearbox internals which might cure the original problem as well. I did find a few bits of metal (see pic below) and was a little concerned about where they had come from, I thought they might have come from the lock tab which was a bit butchered. Quote Link to comment Share on other sites More sharing options...
lee harris Posted January 31, 2012 Report Share Posted January 31, 2012 Thanks for the replies, I would never have guessed that, wonder what their thinking was when they decided to do that? Maybe they knew ham fisted home mechanics like me would get our hands on it so they designed it to be easily repaired!!!! I have the old ones and know a decent enineer so will ask him to make me some new ones. Thanks for the link to ebay I might bid on that to see if they do fit. That chap also has the gearbox internals which might cure the original problem as well. I did find a few bits of metal (see pic below) and was a little concerned about where they had come from, I thought they might have come from the lock tab which was a bit butchered. Remember that 125 and 156 gears are not the same Quote Link to comment Share on other sites More sharing options...
johnh Posted January 31, 2012 Author Report Share Posted January 31, 2012 Remember that 125 and 156 gears are not the same Thanks, I will just go for the clutch then. Quote Link to comment Share on other sites More sharing options...
furse Posted January 31, 2012 Report Share Posted January 31, 2012 Looking at the picture, has the clutch plates been rubbing on the basket rivits? Quote Link to comment Share on other sites More sharing options...
furse Posted January 31, 2012 Report Share Posted January 31, 2012 (edited) Lee, Which gears are different? Edited January 31, 2012 by furse Quote Link to comment Share on other sites More sharing options...
lee harris Posted January 31, 2012 Report Share Posted January 31, 2012 1st and second. Thats why 125s came with 11/53 and 156 ran 11/51 as std. The 156 gears are lower Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.