Creaking on my Stumpjumper FSR Comp ... I can't find the source.
#1
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Creaking on my Stumpjumper FSR Comp ... I can't find the source.
So my 03 Stumpjumper FSR Comp is creaking really bad when I'm cranking away. I don't think it's the rear suspension anywhere, but I'm not sure. Could it be the cranks and bottom bracket? How would you guys go about finding where it's located and then solving the problem? When I lockout the rear suspension I still get it, but definitely not as loud. It's the most noticable when I have nothing locked out and I'm pedalling while standing up on the cranks ... usually uphill when there's a lot of stress on the bike.
Thoughts?
Thoughts?
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I would start with the cranks and pedals. Creaks can be a real pain to find since the sound travels around in the frame. At least you can rule out the saddle and seat post, which is a common source of creaks.
I had a creak that I swore was in the drive train. Same symptoms as you, creaking when hammering and once per crank revolution. It was the front shock!
I had a creak that I swore was in the drive train. Same symptoms as you, creaking when hammering and once per crank revolution. It was the front shock!
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as long as your bb is still good (there is no play in the spindle):
remove the cranks
remove the bottom bracket
clean bb threads in frame
clean threads on bb
grease threads in frame liberally
wrap threads on bb with teflon
replace bb
make sure no grease is on bb spindle
replace cranks
get back out and ride
total cost of the above at my shop: about $25-$30.
remove the cranks
remove the bottom bracket
clean bb threads in frame
clean threads on bb
grease threads in frame liberally
wrap threads on bb with teflon
replace bb
make sure no grease is on bb spindle
replace cranks
get back out and ride
total cost of the above at my shop: about $25-$30.
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So it's a creak, not a click?
If it's a click, every possible cause has been posted on the discussions below:
https://www.bikeforums.net/bicycle-mechanics/53236-clicking-sound-while-pedaling.html
https://www.bikeforums.net/bicycle-mechanics/53105-more-mysterious-clicking.html
If it's a click, every possible cause has been posted on the discussions below:
https://www.bikeforums.net/bicycle-mechanics/53236-clicking-sound-while-pedaling.html
https://www.bikeforums.net/bicycle-mechanics/53105-more-mysterious-clicking.html
#6
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have you thought about the pivots? i remeber hearing somthing about the pivots on some specialized bike that didn't last particularly long...it may have been the bighit though. anyway, its worth a shot to check the pivots...
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I don't think it's the pivots. I've been trying to troubleshoot this problem every time I ride and it only happens when I'm going uphill or if I'm sprinting on a flat in a very high gear (or low gear I forget the naming convention). I'm thinking it's the BB because when I'm not cranking away and I bounce around on the bike and try to put the same tension in the frame it doesn't make the noise. Oh by the way it's a creaking and not a clicking. The creak is getting increasingly worse each time I ride.
I also thought it could be the headset, but I think I've ruled that out as well. I've never taken cranks off before, but I do have a crank puller that I've never opened. Should the BB be replaced or just cleaned out and used again?
I also thought it could be the headset, but I think I've ruled that out as well. I've never taken cranks off before, but I do have a crank puller that I've never opened. Should the BB be replaced or just cleaned out and used again?
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Originally Posted by jtown
I don't think it's the pivots. I've been trying to troubleshoot this problem every time I ride and it only happens when I'm going uphill or if I'm sprinting on a flat in a very high gear (or low gear I forget the naming convention). I'm thinking it's the BB because when I'm not cranking away and I bounce around on the bike and try to put the same tension in the frame it doesn't make the noise. Oh by the way it's a creaking and not a clicking. The creak is getting increasingly worse each time I ride.
I also thought it could be the headset, but I think I've ruled that out as well. I've never taken cranks off before, but I do have a crank puller that I've never opened. Should the BB be replaced or just cleaned out and used again?
I also thought it could be the headset, but I think I've ruled that out as well. I've never taken cranks off before, but I do have a crank puller that I've never opened. Should the BB be replaced or just cleaned out and used again?
Take it to a bike shop. You will never be able to find it yourself. The last time my bikeshop had a bike that was creaking it was figured out to be the spider on the crankset was loose.