help yam r6 knocking noise?
Discussion
Right, coincidentally I'm getting a clunk from my fireblade and before you get your hopes up I haven't figured it out yet.
It feels like it's from the front sprocket but I suspect that that's only because the vibrations are being transmitted through the left peg.
My symptoms are that every now and again I get a thunk-thunk-thunk through the left peg at wheel speed but only at low speed (low 1st gear speeds) and it's more pronounced when I'm cornering. I don't get my first thunk when I open the throttle but a fraction of a second later and then it carries on until I get over about 30.
Does this sound familiar?
Because it's happening at road speed in my honest opinion it has to be the wheel bearings, the cush drive or the chain. If it was the output bearing from the gearbox, any component within the gearbox, the clutch or the engine then the frequency of thunks wouldn't be so low.
I have changed the cush drive and all 3 bearings in the rear wheel (including the one in the sprocket carrier) to no avail... although the symptoms went away to fool me into thinking I hadn't wasted the money on the bearings.
What I'd do if I were you (if you have the tools) is get that back wheel off and checked the cush rubbers and check the wheel bearings work smoothly. The next thing to do is have the chain off and check for missing or damaged teeth on both sprockets. Then (and this is what I think is my problem) check the chain for tight spots.
Good luck and let me know how you get on, I'll do likewise unless I put a match to the fecker and claim on the insurance
Regards,
Mark
>> Edited by dern on Sunday 21st August 21:09
It feels like it's from the front sprocket but I suspect that that's only because the vibrations are being transmitted through the left peg.
My symptoms are that every now and again I get a thunk-thunk-thunk through the left peg at wheel speed but only at low speed (low 1st gear speeds) and it's more pronounced when I'm cornering. I don't get my first thunk when I open the throttle but a fraction of a second later and then it carries on until I get over about 30.
Does this sound familiar?
Because it's happening at road speed in my honest opinion it has to be the wheel bearings, the cush drive or the chain. If it was the output bearing from the gearbox, any component within the gearbox, the clutch or the engine then the frequency of thunks wouldn't be so low.
I have changed the cush drive and all 3 bearings in the rear wheel (including the one in the sprocket carrier) to no avail... although the symptoms went away to fool me into thinking I hadn't wasted the money on the bearings.
What I'd do if I were you (if you have the tools) is get that back wheel off and checked the cush rubbers and check the wheel bearings work smoothly. The next thing to do is have the chain off and check for missing or damaged teeth on both sprockets. Then (and this is what I think is my problem) check the chain for tight spots.
Good luck and let me know how you get on, I'll do likewise unless I put a match to the fecker and claim on the insurance
Regards,
Mark
>> Edited by dern on Sunday 21st August 21:09
Gassing Station | Biker Banter | Top of Page | What's New | My Stuff