dusty23 Posted October 11, 2014 Report Share Posted October 11, 2014 Hi all , I am new to the foruma and the world of trials and bought myself a TY250 . I was having a play about with the bike and after a few days it started to squeak . , I first of all replaced the rear wheel bearings as that was what I thought it was , The squek was still there . I tried to locate the noise and it seems to sound as if it is coming from the front sprocket .The chain seems to run ok around it and the only other thing I can think of is the bearing for the shaft . I am by no means a mechanic but any help or advice would be much appreciated .Is it a big job or if I am heading down the right road . Many thanks in advance Dusty Quote Link to comment Share on other sites More sharing options...
cleanorbust Posted October 11, 2014 Report Share Posted October 11, 2014 Is the squeak there all the time or does it sometimes disappear? Does the frequency vary with speed of the bike? If so does it coincide with the chain doing a full rotation? If so that would be the easiest thing to eliminate. Although you've checked it by rotating the wheel slowly a dodgy link might show itself at higher speeds. Quote Link to comment Share on other sites More sharing options...
bestrcpilot Posted October 11, 2014 Report Share Posted October 11, 2014 Take the chain off the bike and roll the bike around. does the noise go away? I find most squeaks come for the shock bushing or the swingarm bushings. give the bike a good wash and oil and grease any thing that moves A dirty brake will also squeak. Quote Link to comment Share on other sites More sharing options...
dusty23 Posted October 11, 2014 Author Report Share Posted October 11, 2014 Hi Guys , thanks for the replies . The squek is definately there , it seems to be a rotation thing . Not per cycle of the chain , alot quickeer than that . I tried running it slowly while walking along side it but it didnt squeak then . It only happens when underload , ie under my "heavy duty" frame . I managed to lean over and pin point the squeak to the area of the front sprocket . I did jack the bike up and rotate the wheel and the chain ran freely and I checked the sprocket for signs of where in a localised spot . I was hoping it may be the bearing from the sprocket drive or whatever it is called . Is this likely and is it a job and a half to do ! Cheers Dusty Quote Link to comment Share on other sites More sharing options...
lineaway Posted October 11, 2014 Report Share Posted October 11, 2014 (edited) Is it a Mono or a twin shock. Sounds like the chain, chain tensioner or suspension. Did you adjust the chain after you got the bike? Edited October 12, 2014 by lineaway Quote Link to comment Share on other sites More sharing options...
feetupfun Posted October 12, 2014 Report Share Posted October 12, 2014 squirt things near the front sprocket with WD40 one at a time with a test ride in between until you find the culprit Yes it could be the bearing behind the sprocket, if the bearing inner is spinning on the gearbox shaft for some reason. The sprocket nut is meant to be tight. If it's not tight the shaft can turn inside the bearing inner. Could also be the chain adjusted too tight. The chain gets tighter when you get aboard. The WD40 will find it whatever it is Quote Link to comment Share on other sites More sharing options...
dusty23 Posted October 20, 2014 Author Report Share Posted October 20, 2014 Hi guys , I just wanted to say thanks for all the replies . I have now managed to get to the bottom of the problem . It would appear that the special metal washer with the tabs that lock around the nut of the front sprocket had some how bent out and was catching on the chain . I have now re-dressed it to the tabs and now it is perfectly squek free . So once again , many thanks for all your help . Kind regards Dusty 1 Quote Link to comment Share on other sites More sharing options...
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