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New FAQ topic - bike noise checklist/brake squeal
Howdy. It seems like everyday there is a new post about a frustrating
bike creak/tick/knock, and every other day a frustrating squealing brake. The FAQ doesnt have much in teh way of practical advice here. Yes, I know that it always boils down to 'find every possible interface, starting with the big ones, and grease and tighten them', but everyone always has such good things to say. I would like to compile two new FAQ entries. Or actually, one new entry on bike noise diagnosis, and an addition to the technical entry on brake squeal. Would you help? If you post your weird bike noise, and how you fixed it, ill compile a complete list and make it coherent. any other thoguhts you have on the matter woudl be good too. the more detail the better. i know some, and have nailed quite a few noises in my time, but the cumulative knolegde of this group out-diagnoses me a 100 to 1. things to prod your electronic pen: -what differentiates a tick, knock, or creak. causes. -metal-metal combinations that are known for creaking and what to do (Ti spindles, etc) -priorities. what to check first -weird noises that one might never think to check, like plastic/rail interface in saddle and crossed spokes, etc same for brake squeal. the current faq has a good technical article, and words on toe in and rim machining/roughening. hwoever, ive heard many good things about certain pads, certain brakes being predisposed, certain combinations, certain riding habits that bring about squeal, and an additional word on how to take care of disc squeal would be in order, I think. help me out? just take a sec to throw something onto the group, ill write it all up in a week. i know that everything is all in the archives somewhere, but sifting through hundreds and hundreds and hundreds of redundant posts wont make this project go faster. thanks, anthony (who hopes there isnt an article covering all this in the faq that he missed) |
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#2
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New FAQ topic - bike noise checklist/brake squeal
"ant" wrote in message
om... Howdy. It seems like everyday there is a new post about a frustrating bike creak/tick/knock, and every other day a frustrating squealing brake. The FAQ doesnt have much in teh way of practical advice here. Yes, I know that it always boils down to 'find every possible interface, starting with the big ones, and grease and tighten them', but everyone always has such good things to say. I would like to compile two new FAQ entries. Or actually, one new entry on bike noise diagnosis, and an addition to the technical entry on brake squeal. Would you help? If you post your weird bike noise, and how you fixed it, ill compile a complete list and make it coherent. any other thoguhts you have on the matter woudl be good too. the more detail the better. i know some, and have nailed quite a few noises in my time, but the cumulative knolegde of this group out-diagnoses me a 100 to 1. things to prod your electronic pen: -what differentiates a tick, knock, or creak. causes. -metal-metal combinations that are known for creaking and what to do (Ti spindles, etc) -priorities. what to check first -weird noises that one might never think to check, like plastic/rail interface in saddle and crossed spokes, etc same for brake squeal. the current faq has a good technical article, and words on toe in and rim machining/roughening. hwoever, ive heard many good things about certain pads, certain brakes being predisposed, certain combinations, certain riding habits that bring about squeal, and an additional word on how to take care of disc squeal would be in order, I think. help me out? just take a sec to throw something onto the group, ill write it all up in a week. i know that everything is all in the archives somewhere, but sifting through hundreds and hundreds and hundreds of redundant posts wont make this project go faster. One more common noise nowadays is an unlubricated derailleur pulley bushing. Shimano ceramic sleeves whine at a different pitch than the steel ones. Steel pulley sleeves exhibit a remarkably bright red rust, not brown . A small amount of either grease or oil cures that. You'll need to disassemble each pulley as the dust covers keep oil (but not water!) out. Shimano left side hub rubber seals found on the MTB series can also moan when dry. The boot stays on the axle spacer and drags lightly on the hubshell. A drop of oil quiets them. -- Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971 |
#3
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New FAQ topic - bike noise checklist/brake squeal
ant wrote: same for brake squeal. the current faq has a good technical article, and words on toe in and rim machining/roughening. hwoever, ive heard many good things about certain pads, certain brakes being predisposed, certain combinations, certain riding habits that bring about squeal, and an additional word on how to take care of disc squeal would be in order, I think. When you have tried every toe in angle and every available pad color but the pain will not go away:::: -Observe the wheel from above in very good light. -Very slowly apply brakes. -Carefully check if the wheel deflects slightly in one direction as a result of one pad applying more force than the other just_when_ they_ hit. This can happen even though the pad standoff appears equal and the pads seem to move evenly. ..... adjust pads to stop this. |
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