Louis for real Posted December 1, 2013 Share Need some advice please When in the lowest three gears on my rear sproket The following noise happens ggrrrtt grrrtt grrrtt- the chain was cleaned and properly lubed this morning before going out to ride. I was thinking it might be the bb?but why then only in the low gears? any advice will be appreciated. Link to comment Share on other sites More sharing options...
Butterbean Posted December 1, 2013 Share You not cross chaining by chance? Sure it's not the front derailure? Shouldn't be a noise like that but never know what weird things could be happening... Link to comment Share on other sites More sharing options...
Helpmytrap Posted December 1, 2013 Share When you put it in the big blade and the 11T at the back, does the chain sit up against the FD? It is possible that the front derailleur is not shifting far enough over when engaging the big blade, this could either be the limit screw that needs adjusting and/or the tension in the FD cable needs to be increased.Else is the cassette lock ring tight? Link to comment Share on other sites More sharing options...
Louis for real Posted December 1, 2013 Share You not cross chaining by chance? Sure it's not the front derailure? Shouldn't be a noise like that but never know what weird things could be happening... HAHA no guy no this is middle ring front uphill kind of gearing stuff. Link to comment Share on other sites More sharing options...
Louis for real Posted December 1, 2013 Share When you put it in the big blade and the 11T at the back, does the chain sit up against the FD? It is possible that the front derailleur is not shifting far enough over when engaging the big blade, this could either be the limit screw that needs adjusting and/or the tension in the FD cable needs to be increased.Else is the cassette lock ring tight?Just to check if we on the same page. when i mean lower gear it is middle front 36t in back-(larger mechanical advantage) I dont know about the lock ring how will i know? Link to comment Share on other sites More sharing options...
Helpmytrap Posted December 1, 2013 Share Just to check if we on the same page. when i mean lower gear it is middle front 36t in back-(larger mechanical advantage) I dont know about the lock ring how will i know?Okay, then do the same thing with it in the small blade and the 36T. If it catches the inside plate of the FD, then either adjust the other limit screw and/or decrease the tension in the cable (by rotating the barrel adjuster at the shifter, clockwise. Anti-clockwise will increase the tension.) There should be a 1mm gap between the chain and FD side plate.Once you have done this for both the small blade + 36T and the big blade + 11T, put it into the middle ring and see if it still catches the FD. (If this is the case.) Since you say that it is at the 28-32-36 end of the cassette, I highly doubt it would be the lock ring then. But if you still want to check it, you'll need a tool like in the image below in order to tighten the lock ring (which is black in the image.)http://www.singletracks.com/blog/wp-content/uploads/2009/01/lockring-tool1.jpg Link to comment Share on other sites More sharing options...
Louis for real Posted December 1, 2013 Share Okay, then do the same thing with it in the small blade and the 36T. If it catches the inside plate of the FD, then either adjust the other limit screw and/or decrease the tension in the cable (by rotating the barrel adjuster at the shifter, clockwise. Anti-clockwise will increase the tension.) There should be a 1mm gap between the chain and FD side plate.Once you have done this for both the small blade + 36T and the big blade + 11T, put it into the middle ring and see if it still catches the FD. (If this is the case.) Since you say that it is at the 28-32-36 end of the cassette, I highly doubt it would be the lock ring then. But if you still want to check it, you'll need a tool like in the image below in order to tighten the lock ring (which is black in the image.)http://www.singletracks.com/blog/wp-content/uploads/2009/01/lockring-tool1.jpg WOW Thanks for the info. yet the sound is not caused by the chain rubbing the fd.it happens when i put pressure on the pedals going up a hill... Link to comment Share on other sites More sharing options...
Helpmytrap Posted December 1, 2013 Share it happens when i put pressure on the pedals going up a hill...It could be so many things: loose QR skewers, creaking seat post/chain ring bolts/headset bolts/BB. Best advice would be to tighten or grease the components listed above one by one to see if you can find the culprit. edit: sp Edited December 1, 2013 by Helpmytrap Unknown MTBR 1 Link to comment Share on other sites More sharing options...
Louis for real Posted December 1, 2013 Share thanks , il keep that in mind. its definitely a mechanical sound. so either BB(have had two recent wet rides) or lockring.ill check it out in the morning. Link to comment Share on other sites More sharing options...
paarlmtb Posted December 1, 2013 Share Check that your top jockey wheel has enough clearance from the cluster. There is a screw at the back of the derailer to adjust this Also check your hanger, maybe the chain is not running true through the jockeys. Might be scraping against the sides of the RD Edited December 1, 2013 by paarlmtb Link to comment Share on other sites More sharing options...
Jewbacca Posted December 1, 2013 Share Middle gear front and 36t back? So you are cross chaining then?...... If the noise happens at the acceleration of your pedal stroke and is not constant it could be a few things.. The front chain ring could be making the noise as the chain is pulled straight on the angle. It could also be the RD setting being either slightly too flat (what the dude above said while I was typing) or again the angle of the chain irritating the cage and the jockey wheels. If its a new (ish) shimano RD check that the chain isnt dragging on the little tab on the cage between the jockey wheels when under pressure. If you check and do everything mentioned in this thread by everyone, then PM me and we can talk about getting you a real bike that has no FD or RD, a straight chainline and has more teeth on the chain ring than on the free body..... Helpmytrap and kvdp 2 Link to comment Share on other sites More sharing options...
akneethling Posted December 1, 2013 Share Is this a recent occurrence? Check your free hub body. There could be a crack. If that goes while on a ride, it could be a long walk back. ........ it happened to me. Link to comment Share on other sites More sharing options...
gongmech Posted December 1, 2013 Share If it happens when you're climbing hills could it be that you're using granny gear in front and smallest gears at the back...which is a no no?? In that case your chain would be rubbing against itself because there is no tension on the derailleur if your chain is too long.Did you install the chain yourself?? Link to comment Share on other sites More sharing options...
Louis for real Posted December 2, 2013 Share Middle gear front and 36t back? So you are cross chaining then?...... If the noise happens at the acceleration of your pedal stroke and is not constant it could be a few things.. The front chain ring could be making the noise as the chain is pulled straight on the angle. It could also be the RD setting being either slightly too flat (what the dude above said while I was typing) or again the angle of the chain irritating the cage and the jockey wheels. If its a new (ish) shimano RD check that the chain isnt dragging on the little tab on the cage between the jockey wheels when under pressure. If you check and do everything mentioned in this thread by everyone, then PM me and we can talk about getting you a real bike that has no FD or RD, a straight chainline and has more teeth on the chain ring than on the free body..... not to the extent of 42t front 36t back though and the front chain ring has never made this noise...Checked for any drag first... and i have not yet grown hair on my teeth for one of those real bikes Is this a recent occurrence? Check your free hub body. There could be a crack. If that goes while on a ride, it could be a long walk back. ........ it happened to me.Yes only started on saturday while out on my weekly red router. If it happens when you're climbing hills could it be that you're using granny gear in front and smallest gears at the back...which is a no no?? In that case your chain would be rubbing against itself because there is no tension on the derailleur if your chain is too long.Did you install the chain yourself??Just to clarify guys and meant light hearted, i have been riding for quite a while and know the do's and dont's wrt chain lines and gearing so no gongmesh this is not the case Check that your top jockey wheel has enough clearance from the cluster. There is a screw at the back of the derailer to adjust thisthat was the first thing i checked. Edited December 2, 2013 by eye i Link to comment Share on other sites More sharing options...
akneethling Posted December 3, 2013 Share Is it a dual suss or hardtail? Link to comment Share on other sites More sharing options...
Mojoman Posted December 3, 2013 Share Has it always made this noise since you bought it / fitted new cassette and chain? Link to comment Share on other sites More sharing options...
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