AMA Supersport Racer
Join Date: Dec 2011
Location: Lexington, Kentucky
Thanked 102 Times in 84 Posts
Feedback Score: 2 reviews
Binding Rear Wheel/Axle
TLDR version: Torquing rear axle nut down causes the wheel to bind after removing to put in fresh rear pads. How could this happen?
Rear wheel feels like it is binding when I torque the rear axle nut down to spec. I've taken my rear wheel off this bike a whole lot in 4 years but never had trouble with it feeling so bound up.
This is where a lot of variables that I have never had to deal with on the bike come into play and I was hoping someone here could help me eliminate a few of my hypotheses.
So I lowsided the bike a little over a month ago. Didn't think it caused any damage, as I crashed and was able to ride home fine, but I was riding slow and filled with adrenaline so I can't be 100%. Bike slid a good ways on the left side bar end, engine case, and swingarm spool (didn't make it to the spool bolt though).
On the stands, prior to removal, I never noticed the rear wheel feeling so hard to spin. I took the rear wheel off to change the brake pads. My old rear pads have 2 shims each on them. One metal and one fiberglass(?) shim per pad. I did a search and it seems that this is somewhat rare, but I did find another post on .net where someone else had 2 shims per pad.
With both fiberglass shims in, my new EBC pads would not fit back on the rotor. So I took them out and left just the metal shims; rotor now fits back in.
Slide the axle back in, torque to 83 lb/ft with the same torque wrench I've been using the past 2 years, and now the rear wheel has no roll to it. As soon as you let go of the wheel it stops. If you loosen the axle nut, the wheel will spin freely.
I noticed that the rotor's clearance from the rear caliper bracket was questionable, as I found rub marks on the bracket. I removed the outside metal shim and put the fiberglass one back on the side closest to the wheel. This achieved the same result as before. With axle nut torque, wheel does not spin. Without torque, wheel spins fine. Rear brakes operate as expected with the axle nut loose.
I'm going to go back tomorrow and remove the pads from the caliper and mount everything back up to see if the pads are grabbing when I torque the axle nut down. I'm praying that is it, because my next thought is a bent swingarm.
My dad noticed that the rear wheel spacer on the sprocket side seems to kind of float, while the right side seems to spin with the wheel, like it is pressed hard to the bearing. Could I have unseated a bearing when I crashed? Nothing seemed loose or out of place when I felt around.
I'm getting really frustrated because I replaced most of what I felt was damaged after the crash and buying another swingarm isn't really in the budget right now.
Any advice, suggestions, random ideas, etc would be appreciated.
'03 600 RR - ~33,000 miles (14,000 from me)
Yoshimura RS-5 Slip on - Arrow Stainless Headers - BMC Street Filter - PCV - EK 520 Chain on Driven Sprockets - CoreMoto Stainless Lines (F+R) - Dan Kyle PAIR Delete - The2Wheels Shorty Levers - Vortex V3 Rearsets - Woodcraft Frame Sliders & Bar Ends - Woodcraft Stator and Clutch Covers - Cox Radiator Guard - Renthal Dual Compound Grips - 1000RR Kill Switch and Throttle Housing - TST IT and FE - Proton Flushmounts
Last edited by G Money; 04-22-2014 at 11:55 AM.