Creaking Bike - Last Desperate Request for Advice
#26
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Bikes: Nukeproof Mega, Nukeproof Scout
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My Specialized Stumpjumper did that. There are internal lugs in the frame that twist in the tubes when you apply enough torque. Specialized recommends pouring linseed oil in the tubes (tilt it so that it penetrates the offending lugs, in my case where the top and down tubes meet the headtube). I have to do it about once a year.
#27
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Just to give an update:
My chainring bolts are rivets, so I couldn't do anything with those. I greased the rear skewer, put the wheel back on, and haven't heard anything for about 70 miles.
I'm reluctant to say it's fixed, but it sure seems like it. Thanks to all who posted suggestions.
My chainring bolts are rivets, so I couldn't do anything with those. I greased the rear skewer, put the wheel back on, and haven't heard anything for about 70 miles.
I'm reluctant to say it's fixed, but it sure seems like it. Thanks to all who posted suggestions.
#28
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Your symptoms [actually your bike's] sound exactly like a failed TruVativ crank unit I had. The spindle-spider friction joint had come loose. Eventually, long after the beginning of the creek'r-eekers, I could detect the slightest lateral movement in the chainrings. SRAM replaced the unit without question.
#29
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I've had a creak for some time. Earlier this summer, I found a crack in the bottom bracket shell, so I swapped out the frame, expecting this to be the problem, but the creak remained. Last weekend, as I was riding along, CLUNK, the seat post broke right off! It broke on the post, but just below the bracket that holds the seat rails. About 5 inches of post were still sticking out of the frame. I'm very happy that when it broke, I was able to catch myself before sitting on the post; it looked very intimidating!
So, I rode home standing, then went to the bike shop to get a new post. I installed the post, went for a ride, and no creak! My speculation is that the creak was caused by a crack that was slowly getting bigger.
As to why the post would break, I'm speculating that this is because I have the seat pushed all the way back, so that all of the weight that I put on the saddle is behind the seat post, so that there is considerable torque on the post. Still, I would hope it would be strong enough to handle this. After all, this is a road bike, not a mtn bike.