I have a 2000 Jamis Cross-Country. I've had it since late 2001, and it saw moderate and rare riding. This summer I started usuing it nearly daily as a commuter bike, and just recently I've actually been using it to mountain bike. However, in the past two weeks, it broke in someway every time I tried to use it. First, on the way to the trails, I was accerating from a traffic light, and I did this:
http://home.comcast.net/~robbieig/crank/bent01.jpg
http://home.comcast.net/~robbieig/crank/bent02.jpg
http://home.comcast.net/~robbieig/crank/bent03.jpg
Replaced, so I replaced it with a Shimano tripple crankset. The next time I was riding to the trails, the rear axle bent. I didn't realize what had happened...I just noticed that I couldn't get the wheel centered. Then, as I was going downhill after a big climb, the axel got so bent that the wheel rubbed on the left chainstay. Getting home was quite the chore.
I replaced the axle and, in so doing, noticed some scarring on the axle cones, but my LBS didn't have any suitable replacements. So, I had to go with just the new axel. After about an hour of riding on the new axle, it bent again, going uphill, no jumps, not even really any rough terrain. But, once again, the back wheel was rubbing the chainstay. Luckily, it was mostly down hill, and I was closer to home this time. Upon removal, it was clear that the new axle, a supposedly stonger one, was bent.
I don't know what I am doing wrong. I don't think it's me weight that is causing this, thought I am 310lbs the last time I checked. Afterall, if a 180lb man can take a jump on the same axel, I should be able to ride on the groung without bending one. And I have had no trouble at all on my fixed gear road bike.
Anyone have any experience with this sort of thing? Should I spring for new bearings, a new wheel, new cassette? Switch to a solid axle and dump the quick release?
Oh yeah, with the new crank set, I haven't been able to adjust the front deraileur to be able to shift to the shortest chainring. Is everything on this bike just ****?!
Any help is appreciated.
http://home.comcast.net/~robbieig/crank/bent01.jpg
http://home.comcast.net/~robbieig/crank/bent02.jpg
http://home.comcast.net/~robbieig/crank/bent03.jpg
Replaced, so I replaced it with a Shimano tripple crankset. The next time I was riding to the trails, the rear axle bent. I didn't realize what had happened...I just noticed that I couldn't get the wheel centered. Then, as I was going downhill after a big climb, the axel got so bent that the wheel rubbed on the left chainstay. Getting home was quite the chore.
I replaced the axle and, in so doing, noticed some scarring on the axle cones, but my LBS didn't have any suitable replacements. So, I had to go with just the new axel. After about an hour of riding on the new axle, it bent again, going uphill, no jumps, not even really any rough terrain. But, once again, the back wheel was rubbing the chainstay. Luckily, it was mostly down hill, and I was closer to home this time. Upon removal, it was clear that the new axle, a supposedly stonger one, was bent.
I don't know what I am doing wrong. I don't think it's me weight that is causing this, thought I am 310lbs the last time I checked. Afterall, if a 180lb man can take a jump on the same axel, I should be able to ride on the groung without bending one. And I have had no trouble at all on my fixed gear road bike.
Anyone have any experience with this sort of thing? Should I spring for new bearings, a new wheel, new cassette? Switch to a solid axle and dump the quick release?
Oh yeah, with the new crank set, I haven't been able to adjust the front deraileur to be able to shift to the shortest chainring. Is everything on this bike just ****?!
Any help is appreciated.