hewson Posted December 22, 2009 Report Share Posted December 22, 2009 Hi All How long can i lenghten the engine clutch arm on a 125 pro twin shock (very similar to the 240 pro) to make the clutch lighter . Also as anybody got any photos of the set up ????? Cheers Merry Xmas Quote Link to comment Share on other sites More sharing options...
ahamayfrank Posted December 22, 2009 Report Share Posted December 22, 2009 I don Quote Link to comment Share on other sites More sharing options...
htrdoug Posted December 22, 2009 Report Share Posted December 22, 2009 What gear oil are you running?My 240 clutch gets a reasonable level of effort when I run ATF in the trans,but it starts to shift stiffly after about 20 sections of a trial,I'm gonna try 50% atf and 50% 80 weight gear oil and see how well it does.ATF is about 5w and 80 weight is about 10w in motor oil equivalent in my unscientific tests. I am also going to experiment with the basic clutch engagement adjustment at the center of the clutch vs. the cable adjustment to see what the effects the internal cam position has on the feel of the clutch. Quote Link to comment Share on other sites More sharing options...
hewson Posted December 22, 2009 Author Report Share Posted December 22, 2009 Hi I'm running silkolene light gear oil , which i change every 5 trials ,i have a spare engine clutch arm which can be chopped and extended if anybody as more info ,i'm pretty sure this is the way to go for a lighter clutch action ..... Quote Link to comment Share on other sites More sharing options...
b40rt Posted December 22, 2009 Report Share Posted December 22, 2009 Dont know about Fantic but have extended arms by about 10mm, usually there is some internal constraint anyway. Quote Link to comment Share on other sites More sharing options...
isaacely Posted December 22, 2009 Report Share Posted December 22, 2009 Are you sure your not limp wristed. Quote Link to comment Share on other sites More sharing options...
hewson Posted December 23, 2009 Author Report Share Posted December 23, 2009 Quote Link to comment Share on other sites More sharing options...
ianpr Posted December 23, 2009 Report Share Posted December 23, 2009 My 300 Pro had an extended arm & it made a huge difference - with a short ' 2 finger' clutch lever you could feather the clutch with 1 finger in a section. I got it with the mod. I no longer have the bike (stupid mistake - selling it!) so I cant measure it for you, but there was a clearance limit to what you could add. It took a bit of time to adjust as well because of the longer throw on the lever, otherwise it would slip. Also found a good well lubricated cable was critical. Ian Quote Link to comment Share on other sites More sharing options...
axulsuv Posted December 23, 2009 Report Share Posted December 23, 2009 When I get a moment I'll measure my clutch arms for ya , But with a longer arm you do have to run a domino lever to get enough cable travel . And Chris at http://www.classictrial.co.uk/index.html Makes a very sturdy kit to do the update quite nicley. Glenn Quote Link to comment Share on other sites More sharing options...
sivy Posted December 24, 2009 Report Share Posted December 24, 2009 Hi Try here http://pagesperso-orange.fr/fantic240pro/Ukprepaafata.htm Regards Quote Link to comment Share on other sites More sharing options...
hewson Posted January 10, 2010 Author Report Share Posted January 10, 2010 (edited) Hi All A few photos of a clutch extension arm for the fantic engine ( cheers for that Peter ) . Its made the clutch is a lot lighter............. Edited January 10, 2010 by hewson Quote Link to comment Share on other sites More sharing options...
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