Output Shaft Bent etc.

[Joker]

I have described an intermittent, momentary loss of drive elsewhere here. Now my dealer has split the box we have a theory. This shaft is bent;



If you turn the shaft and hold the bearing on the far right a slight wobble can be felt. The gear second from the left is black (according to the tech this was probably an indication it has got hot) as are the two cogs which are behind this shaft. Two of the three selector forks show signs of wear and heat. Some of the dog rings are showing signs of wear.

No signs of damage to this, whatever it's called;



The tech thinks that the shaft is bent because it has been twisted by the sudden and repeated application of power. Is this possible? Would it explain the momentary loss of drive. It always felt as though it was jumping a tooth, but I couldn't work out how this was possible. If the shaft is bent (which it is) is it possible it could jump a tooth and re-engage as it rotates?

It's had 266 bhp going through it via a lock-up clutch for 6000 miles, then 293bhp for another 2000 miles. Have I taken too much slack out of the drive train?

 

[warp9.9]

More pictures Brother were learning something now!!!!
What housing does the bearing on the right fit into?
Is this the next week link or has it developed due to extra traction of the Dark side grip when acteded upon by Rotrex forces

 

[R34ME]

Top photo is the output shaft, and yes I have seen the black second gear in a bike that was jumping out of second at only 800kms, the photo below is the tortional damper, make sure bearings are replaced in this before it goes back together. IMO if you have seen the input and output shafts no way would they bend. They are well supported by bearings that are housed in the cases, strip the tortional damper and check it. Warp from the top photo if we could see further down the case that bearing tortional damper slots through another hole in the case and the two gears mesh to provide drive, wish I could inspect it in person. :wink:

 

[Joker]

Top photo is the output shaft, and yes I have seen the black second gear in a bike that was jumping out of second at only 800kms, the photo below is the tortional damper, make sure bearings are replaced in this before it goes back together. IMO if you have seen the input and output shafts no way would they bend. They are well supported by bearings that are housed in the cases, strip the tortional damper and check it. Warp from the top photo if we could see further down the case that bearing tortional damper slots through another hole in the case and the two gears mesh to provide drive, wish I could inspect it in person. :wink:

What would cause it to feel as though it's bent if it's not? Duff bearings?

A bigger pic for my little brother;

 

[warp9.9]

Nice picture for a phone brother. Maybe it feels weird because the shaft and bearings are not fully supported?

Les have Rob PM me or give him my e=mail I will see if I can order the fibers tomorrow or Monday at the latest.

Hey brother when your tech takes the gears off the shaft have him put it between centers and tak indictor readings to check run out then you will know for sure about the shaft.

 

[ruzzle]

Please someone more knowledgeable correct me if I'm wrong. That black/burnt gear second from the left is fifth, isn't it??

You wouldn't reckon that had much to do with jumping outa second???

Just guessing.....

 

[warp9.9]

From the looks of the manual you are right ruzzle.

 

[Joker]

Please someone more knowledgeable correct me if I'm wrong. That black/burnt gear second from the left is fifth, isn't it??

You wouldn't reckon that had much to do with jumping outa second???

Just guessing.....

I haven't had a problem with it jumping out of second, the loss is in a variety of gears. I've had trouble getting it into second sometimes, usually dragging it, and I find it a lot easier to find neutral while moving rather than stationary. Thanks for the PM. :wink:

ST,

It's round the corner from you, Woods', Aberegele.

 

[TurboFan]

Look carefully at the dogs on Second and see if they show wear. I would expect that to engage and disengage before a gear could slip a cog and still function normal afterwords.

 

[step1]

You need to get it between centres as warp said.You would no for sure then. Looks expensive me ode.