Hayabusa Gearbox - the fixed model

[Madmax]

[quote='Bone' pid='225608' dateline='1284664935']
G'Day Max,

Job well done.

Just wondering what was going on with the box that prompted
you to pull it down? And what did you change to fix it? Did you get
the teeth undercut in the process? Were any of your selector forks
bent?

I've probably missed all this on earlier threads.

Cheers Bone.

Hi Bone,
she was lurching at the hiugher rev rate - around 6 to 7,000 rpm and up she would suddenly lurch out of gear and back into gear. The first time she did it I lost traction on the back tyre and left a nice black squiggle on the tar - scared the shit out of me. Then it did it again. I had an '84 FJ1100 that did the same thing but was covered by warranty, so I knew what was happening.
Goingeasily through the gear and nothing would happen, so it was only when I was getting towards maximum horsepower through the gearbox that had her doing it.

I took the clusters down to my local bike shop and had them tell me what to replace - the pictured cogs and selector fork. As you can see from the poicture, the selector fork was munted well and truly.
Pete has suggested also putting heavier quality guide rods for the selector forks, if I have to do this again I'll be using his suggestion.


Max thanks for the info!!

Was wondering if it was related to the bent shifter fork probs that
made gear selection difficult..obviously not...but the info/pics in your thread seem to show that for major g/box work the cylinder block removal and crankcase spilt don't have to be done..thank you for that.

Cheers Bone!

They certainly don't mate, that's what made it a reasonably straight forward job. Don't forget the good Torque Wrenches. They pay for themselves in bolts not stripped or broken.

Regards.


Max