|   Problem with Avid Mech install on FSR XC.............. | PJD
Nov 14, 2002 9:16 PM | | I have a 99 FSR XC. I purchased a seatstay from a 01 Rockhopper so I wouldn't have to go with the sharkfin adapter. Even if I did have the adapter, I would have this same problem. The rear rotor is rubbing in the pivot bolt between the seatstay and chainstay.
Has anyone else had this problem? Do I just go to the hardware store and find lower profile nuts and bolts? Does "S" have different bolts I could get?
Also, the pivot between the seatstay and chainstay is slightly different. My Mountainspeed bearing kit won't work on the rockhopper seatstay. Did those 01 rockhoppers have bearings or bushing back there?
Thanks for your response. |
| re: Problem with Avid Mech install on FSR XC.............. | japanrider
Nov 14, 2002 10:28 PM | | My friend's '01 FSR rockhopper and my '02 FSR stumpjumper both have deore hydraulic brakes and hubs. The rotor is VERY close to the back of the pivot nut on both bikes, but after a summer of hard thrashing neither has had contact with the rotor.
If it is really just rubbing lightly, you could probably file down the back of the nut a few millimeters without having to search for a lower-profile replacement. If the rotor clears, even barely, I think it'll be cured.
If it's worse than that, try a friend's wheel with a disc; perhaps your hub is placing the rotor too far outboard (out of spec?). You'll know if the different wheel's rotor clears the nut.
If that one rubs, and the swingarm isn't bent, find a lower-profile nut.
The Avid rotor isn't the culprit unless it is warped and rubbing intermittently.
Good luck!
PS
My friend's 2001 rockhopper FSR has bushings. |
| re: Problem with Avid Mech install on FSR XC.............. | Ted
Nov 15, 2002 11:07 AM | | Make sure the chainstay to seatstay bolts have the head on the wheel side and the threads on the outside. My 2000 came with a normal bolt for the derailer side and a special very flat head bolt for the other side. Without the flat head my Avid disk would make contact with the bolt.
BTW, I am also running the 01 Rockhopper seatstays and they work great. The switch got rid of the flex and rubbing when using the stock seatstays and a sharkfin. My lbs installed the seatstays and they claimed they came with bearings at the seatstay/chainstay pivot. I had the Mountain Speed bearings installed and they gave them back to me. If it gets sticky back there I will look into it. So far so good. |
| Follow up, Everything installed.......... | PJD
Nov 15, 2002 10:50 PM | | I filed the nut down, no problem now.
As far as the dropout bearings, My LBS said they were bushing. I did not want bushing after having the mountainspeed bearing kit for the last year and a half. I basically measured the sized of the hole, got the proper size drill bit, and bored it to the right size myself with a drillpress. Now I have my MRP dropout bearings installed, all is right with the world! |
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