bramfrank
BramFrank
So I keep reading that there is excessive driveline lash in the FJR.
All (almost all?) bikes have some last (play) in their power trains and the FJR is certainly no different. Mine has some, but I have learned how to deal with it so that shifts, both up and down are smooth and I have no significant issues in the twisties.
However I decided to look at my service manual after someone asked an electrical question and it struck me that, while Yamaha has a number of different values for shimming and torqueing the various bevel gears and such, there i no overall specification that I could find to make simple go, no-go measurment of the total free play in the drive system (or it could just be that I am blind - the STBE (Soon To Be Ex) says I'm selectively deaf, so it wouldn't be a stretch).
I also searched the forums and there is ample reference to lash issues and how to deal with it by adjusting throttle cables and such - but that's treating the symptom, not curing the disease. There are some measurements of free play provided by members (presumably in first) of 2.5" to 2.75", but that is experiential, not an official specification.
Does anyone have (or know where to find) an official number for just how much free rotation the rear wheel should have when in gear with the engine off?
Just curious.
All (almost all?) bikes have some last (play) in their power trains and the FJR is certainly no different. Mine has some, but I have learned how to deal with it so that shifts, both up and down are smooth and I have no significant issues in the twisties.
However I decided to look at my service manual after someone asked an electrical question and it struck me that, while Yamaha has a number of different values for shimming and torqueing the various bevel gears and such, there i no overall specification that I could find to make simple go, no-go measurment of the total free play in the drive system (or it could just be that I am blind - the STBE (Soon To Be Ex) says I'm selectively deaf, so it wouldn't be a stretch).
I also searched the forums and there is ample reference to lash issues and how to deal with it by adjusting throttle cables and such - but that's treating the symptom, not curing the disease. There are some measurements of free play provided by members (presumably in first) of 2.5" to 2.75", but that is experiential, not an official specification.
Does anyone have (or know where to find) an official number for just how much free rotation the rear wheel should have when in gear with the engine off?
Just curious.