ticket2ride Posted August 8, 2011 Report Share Posted August 8, 2011 Chaps, Just noticed this little movie online: http://betamotor.jp/support/cluch-ajust.htm What's going on there? Shimming out for better engagement? Is this an alternative option as opposed to filing/polishing the plates? Quote Link to comment Share on other sites More sharing options...
munch Posted August 8, 2011 Report Share Posted August 8, 2011 Chaps, Just noticed this little movie online: http://betamotor.jp/support/cluch-ajust.htm What's going on there? Shimming out for better engagement? Is this an alternative option as opposed to filing/polishing the plates? its to get rid of drag Quote Link to comment Share on other sites More sharing options...
dgshannon Posted August 8, 2011 Report Share Posted August 8, 2011 Chaps, Just noticed this little movie online: http://betamotor.jp/support/cluch-ajust.htm What's going on there? Shimming out for better engagement? Is this an alternative option as opposed to filing/polishing the plates? You can translate the text, below the video, to get a feel for what they are doing. Basically adjusting for travel after the plates/disks have worn down. Or, adjusting once new (thicker) ones are put in. Translated Text: Beta 2 test model (Techno, Rev-3, Evo2T) how to adjust the clutch. This adjustment is intended to adjust the mechanical play of the clutch disc, master cylinder and slave cylinder, such as adjustment of the hydraulic system is different. Adjustment is performed when a change in the thickness of the disk, etc., when the wear of the clutch disc and a new replacement. With the use of, Machine, friction and wear of the disc progresses, the disk reduces the total thickness of the plate, waiting position by the pressure plate is lowered, riff - and reduces the gap between the master. If this trend progresses, state and always has been pushing the pressure plate lifter, due to the insufficient crimping force, the clutch connection failure occurs. Quote Link to comment Share on other sites More sharing options...
inchhigh Posted August 9, 2011 Report Share Posted August 9, 2011 that will be why my clutch was dragging and i couldn't find anything wrong metal plates fine frictin plates down a bit but loads of life.think we need the film in english please mr lampkin. Quote Link to comment Share on other sites More sharing options...
dgshannon Posted August 9, 2011 Report Share Posted August 9, 2011 that will be why my clutch was dragging Don't think so. As the friction plates wear, it should lead to slipping, and not dragging. Quote Link to comment Share on other sites More sharing options...
19delta Posted December 24, 2015 Report Share Posted December 24, 2015 My 2011 evo 2t has drag. I have done the clutch "fix" (which made my clutch SO much better in every aspect). When I first got the bike used a year ago, it didn't have any. I did the clutch fix soon after getting, and still didn't have any. The last several months it has progressed more and more to having more drag. I have the clutch lever adjusted properly so it fully releases with a small gap between piston and the plunger. I am thinking I need to adjust this shim as mentioned in the video. Do I need to add shim, or remove? I think remove, but that seems backwards? Quote Link to comment Share on other sites More sharing options...
totty79 Posted December 24, 2015 Report Share Posted December 24, 2015 The shim won't make a difference hydraulics are self adjusting. Have you changed the oil, it'll drag on old oil and they also seem fussy on oil brand. I tried several fixes on my 2012 before just replacing the pack (friction and steel) and it's been fine since. Quote Link to comment Share on other sites More sharing options...
19delta Posted December 24, 2015 Report Share Posted December 24, 2015 Thanks for the reply! Yes, I change the oil often. Approx every 10-15 hours. I like how it feels wish torco oil, what do you recommend? Lastly, what fixes did you do before buying new clutches? Did you adjust the shims? Quote Link to comment Share on other sites More sharing options...
totty79 Posted December 24, 2015 Report Share Posted December 24, 2015 I've only tried 4 oils in it, motul 300v gave the best clutch action, it's expensive but at least it doesn't take much. I polished the tabs, removed the glue between the friction material, swapped out the two thicker plates, messed with lever adjustment to get maximum travel, tried atf and two putoline oils, measured travel and thickness, tried with two springs removed, did assorted pre start rituals to prevent sticking, tried to source factory spring washers and failed. None of it was worth the hassle compared to just fitting a new set of plates, although I did remove the glue before fitting them and filed high spots of the tabs but did not polish them. Quote Link to comment Share on other sites More sharing options...
19delta Posted December 24, 2015 Report Share Posted December 24, 2015 Thanks for the info! Quote Link to comment Share on other sites More sharing options...
worldtrialchamp Posted December 26, 2015 Report Share Posted December 26, 2015 I agree that the clutch hydraulics are self adjusting and the theory behind the shimming should be flawed.....but I suspect the position of hydraulic pistons especially the slave piston is important. A millimeter or two in the wrong direction may actually affect things. ...I'm keen to try this adjustment Quote Link to comment Share on other sites More sharing options...
lineaway Posted December 26, 2015 Report Share Posted December 26, 2015 http://www.trialscentral.com/forums/topic/50058-clutch-master-cylinder-alternatives/#entry360919 Quote Link to comment Share on other sites More sharing options...
19delta Posted December 26, 2015 Report Share Posted December 26, 2015 I agree that the clutch hydraulics are self adjusting and the theory behind the shimming should be flawed.....but I suspect the position of hydraulic pistons especially the slave piston is important. A millimeter or two in the wrong direction may actually affect things. ...I'm keen to try this adjustment I'm with you, I would like to try the adjustment. If were dragging, which way do we need to adjust? Thinner or thicker? The stock shims are thin. Could we experiment by removing the shim? Quote Link to comment Share on other sites More sharing options...
lineaway Posted December 26, 2015 Report Share Posted December 26, 2015 If you watch the film, they are adjusting out the free play which would help eliminate clutch drag. Them some bright fella`s over there! Quote Link to comment Share on other sites More sharing options...
BetaLongTime Posted March 9, 2021 Report Share Posted March 9, 2021 I just completed adding shims to the clutch of a 2012 Beta Evo 250 and it worked perfectly. Added 0.4mm, taking the play down to almost the minimum 0.2mm. I wish I had done this years ago. Experimenting with oils didn't work. Great fix. 1 Quote Link to comment Share on other sites More sharing options...
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