need help (tranny/clutch)?????

[noquarter]

Hey Guys,
Suddenly my bike won't run on whichever gear I use.
My speedo's needle goes up as I increase the throttle even on the supposed neutral.
No rear-wheel movement of any sort.
My acceleration was running a bit rough before I lost all of it.
What could this be? What do I need to check first? Could it be the tranny? Clutch? I could turn the wheel freely on any gear without applying the clutch.
Thanks....

[Bob_Roller]

If the speedometer is moving when you increase the throttle, I'd say that the transmission is still moving inside, so it probably would rule out the clutch and transmission input splines .

I'd drain the oil out of the transmission, and see what you find .


Can you detect any unusual noise when you run the engine, and the transmission is in gear .

[noquarter]

Just had my gear oil changed a few weeks ago. It's just the usual grey paste and some hardly noticeable metal flakes. The bike had some funny noises on the tranny area and running a bit rough on acceleration just moments before it totally went out.
Now it's all quiet with no movement on the rear wheel on whichever gear...  
By the way its an 82' R65LS

[Lucky_Lou]

As the speedo drive is mechanical and on the very end of the gearbox drive-train its likely the final drive is the problem.
Put a bit of wood or something under the center stand slide back the boot on the swinging arm with the bike in neutral rotate the rear wheel you should be able to see the coupling turning then try it in gear either way youll have to strip the swinging arm off to sort out the problem.
Lou

[Bob_Roller]

Outside chance here, there are 4 bolts that hold the drive shaft to the transmission output flange.

They have been known to loosen up, and fall out .

You can feel for them through the rubber boot between the transmission and swing arm .

[noquarter]

Thanks Bob...Thanks Lou...Will check on that. Hopefully it's nothing that serious... :-/

[Semper Gumby]

Either that or the spline on the final drive between the final drive and the wheel are gone.  Just pull the rear wheel off and look.  Please post a picture of whatever you find please!!!!
At about 85,000 miles I had mine replaced.  There's a gent somewheres that saws off the worn one and welds on a new one.  

Nathan at Boxerworks sent it off for me.

Good luck.  Not as expensive as a re-do on the tranny.

[donbmw]

The tapered drive shaft addapter on the transmission output shaft could be loose and spinning on the shaft. I would think that you would here some noise if any of the spline shafts are slipping. I have had the output flange come loose from it not getting the right torque when it was installed.

Don

[noquarter]

Outside chance here, there are 4 bolts that hold the drive shaft to the transmission output flange.

They have been known to loosen up, and fall out .

You can feel for them through the rubber boot between the transmission and swing arm .

All 4 of these have fallen out.  :oAny suggested methods on how to keep those 4 bolts in place? Thanks..

[Rob Valdez 79 R65]

I would get 4 new fasteners (the short ones, that DO NOT use lock washers) and make sure the threads
on the transmission output flange are clean & dry.  (<--lots of suggestions here)

Hopefully you have a 10mm box-end wrench like the one that came with the bike.

Get all 4 fasteners in place and take up the slack on them.

Step on the brake pedal to keep everything from turning while you tighten them down tight.

Using that small wrench, I just give it all I have, without tipping the bike over!

I have yet to strip one out (unlikely), nor have I had one come loose.

I have NEVER used any thread locking compound here.

[Bob_Roller]

The 12 point bolts are torqued to about 25-29 foot pounds .

So they get tightened up pretty good, for the size fastener they are .

[Semper Gumby]

I've used Blue Locktite with my short (No washer) stretch bolt to good effect.

I have a 7 inch twelve point wrench that I thinned out on the closed end to make it easier to get in to place.  The I just gradually tighten each bolt continually turning the shaft (propellor) until each bolt feels goodntight.   8-)

At least it wasn't something really expensive.

[noquarter]

Thanks guys...Gave it a spin and everything seems to be alright...

[Lucky_Lou]

Thanks guys...Gave it a spin and everything seems to be alright...

And i thought i was Lucky.
Lou

[Mike V]

Were you able to retreive the missing hardware?!!!!  All of them?