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Funny sounds question?(3 posts)

Funny sounds question?JL
Apr 29, 2003 10:42 AM
I have 2 questions about sound from my bike:

1. My front shifter (Shimano Ultegra) is squeaking when shifting into the big ring. Is there something I should spray in the mechanism (e.g. WD40)?

2. Another sound happened yesterday. As I was starting from a dead stop there was a pop/ringing sound from the BB/Crank area (maybe)? I couldn't find anything and it didn't happen the rest of the ride or on todays ride. I haven't found anything broken, so maybe there was a mis-shift involved(?) Just looking for ideas on where to start looking.

Thanks.

John
1 click, 2 click, 3 click, 4Kerry
Apr 29, 2003 3:53 PM
If you sluice your shifters with WD40, you need to follow up with an actual lubricant. WD40 can best be thought of as aerosol kerosene - it has virtually no lubricating properties. If your WD40 sluice removes the lube, you're not heading in the right direction unless you replace the lube. Follow up the WD40 with ProLink, TriFlow, etc.

Assuming the noise from your pedaling didn't cause you to feel anything significant through the pedals, it could be any number of things ranging from QR skewers to pedals, cleats, chainring bolts, BB, spokes, etc. It is not uncommon to have some creaking when pedaling hard from a stop. If it becomes more regular, then you need to start looking for the source. Depending on the age of your bike and the frame material, I'm betting on the BB. The fix is to pull the BB, clean and grease everything, and replace by tightening to specified torque.
re: 1 click, 2 click, 3 click, 4JL
Apr 29, 2003 5:18 PM
Thanks Kerry,

I can always count on a helpful response from you. I'll just try adding some lube to the shifter, as I haven't done anything yet. I just wanted to make sure I didn't shoot anything in that I would regret later.

The noise was a plunk/poing sound. I know they're hard to find. Everything seemed to keep working. Maybe it's time I tried my hand at pulling and replacing the BB.

Thanks again.

John