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squeaky turning
Today there was a guy and he said suddenly
whenever he turned the front wheel there was an unpleasant noise. I said this was likely to be because of the cold. I gave him WD-40 and said this will penetrate the best but one should use with care as not to flush away the bearing grease. I gave him a can of hydro oil and said this will penetrate OK and shouldn't harm anything no matter. I gave him grease and said this is for the bearings but without picking everything apart it is difficult to get it in place. Am I right? -- underground experts united http://user.it.uu.se/~embe8573 |
#2
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squeaky turning
On 2018-01-05 12:40, Emanuel Berg wrote:
Today there was a guy and he said suddenly whenever he turned the front wheel there was an unpleasant noise. I said this was likely to be because of the cold. I gave him WD-40 and said this will penetrate the best but one should use with care as not to flush away the bearing grease. I gave him a can of hydro oil and said this will penetrate OK and shouldn't harm anything no matter. I gave him grease and said this is for the bearings but without picking everything apart it is difficult to get it in place. Am I right? I never use WD-40 or any degreaser on bicycles. If the steerer bearings creak they are shot, need to be replaced. What I sometimes did with BB bearings to nurse them along another 1000 miles or until the replacement gets here is to let fine turbine oil seep in, with the bike laid on the respective side. It is an oil similar to what is used to lube Hammond organs. At least that took away the ugly screeches. Thing is, you never know where the oil will go. Will it go into the cup or will it find a crack on the outside and just run away into the steerer tube? -- Regards, Joerg http://www.analogconsultants.com/ |
#3
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squeaky turning
Joerg wrote:
If the steerer bearings creak they are shot, need to be replaced. Yes, but is that the only possible source of the noise? -- underground experts united http://user.it.uu.se/~embe8573 |
#4
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squeaky turning
On 2018-01-05 13:52, Emanuel Berg wrote:
Joerg wrote: If the steerer bearings creak they are shot, need to be replaced. Yes, but is that the only possible source of the noise? In practice yes. In theory you could also have the fork tube rubbing inside the steerer tube but that would require one or both steerer bearings to have completely failed and disintegrated. In that case the whole front end slacks back and forth in the steering and I would not ride one more foot on that bike. Assuming you guys have checked other obvious stuff such as mud guards or other things rubbing against the downtube. Oh, and if studded tires are mounted lift the wheel before doing the noise test :-) -- Regards, Joerg http://www.analogconsultants.com/ |
#5
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squeaky turning
Joerg wrote:
In practice yes. In theory you could also have the fork tube rubbing inside the steerer tube but that would require one or both steerer bearings to have completely failed and disintegrated. In that case the whole front end slacks back and forth in the steering and I would not ride one more foot on that bike. I have not what I can remember been on a bike with shot steerer bearings, but my imagination tells me when this happens, you step off the bike, not ride it all the way to your destination, and there complain about a noise? Assuming you guys have checked other obvious stuff such as mud guards or other things rubbing against the downtube. Oh, and if studded tires are mounted lift the wheel before doing the noise test :-) Right - I didn't do any tests as I only gave the answer. Most common when there is a noise people for some reason always think it is from the BB which most often it isn't. Because he didn't, I thought the same thought only backwards and assumed he was right... How do you do the "noise test"? With a steel pin onto the area you suspect is the origin? -- underground experts united http://user.it.uu.se/~embe8573 |
#6
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squeaky turning
On 2018-01-05 17:54, Emanuel Berg wrote:
Joerg wrote: In practice yes. In theory you could also have the fork tube rubbing inside the steerer tube but that would require one or both steerer bearings to have completely failed and disintegrated. In that case the whole front end slacks back and forth in the steering and I would not ride one more foot on that bike. I have not what I can remember been on a bike with shot steerer bearings, but my imagination tells me when this happens, you step off the bike, not ride it all the way to your destination, and there complain about a noise? Nah, you can ride it for a long while, it's just not very comfortable. Complaining isn't the thing to do, getting the tools out and fixing it is. Assuming you guys have checked other obvious stuff such as mud guards or other things rubbing against the downtube. Oh, and if studded tires are mounted lift the wheel before doing the noise test :-) Right - I didn't do any tests as I only gave the answer. Best to test before answering :-) ... Most common when there is a noise people for some reason always think it is from the BB which most often it isn't. Unfortuntely in my case it usually was :-( I lost count how many BBs I have worn out. ... Because he didn't, I thought the same thought only backwards and assumed he was right... How do you do the "noise test"? With a steel pin onto the area you suspect is the origin? Take the load off anything else, prevent anything else from moving, and then move the suspected shaft. For example, with the BB I put the bike on the bench, take the chain off the chain ring, tape or strap the pedals to their cranks and then turn the cranks. Rumble ... crunchacrunch ... dang, again! With older square taper cup and cone BBs I could get some more life out of them by moving each crank 180 degrees on the shaft but that doesn't seem to work with the sealed kind. -- Regards, Joerg http://www.analogconsultants.com/ |
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