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Discussion Starter · #401 ·
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Discussion Starter · #402 ·
Fragile fitting that - did you get all kung fu on it Adam? ;-)
Looks like I didn't have the bush firmly against the shock mount so there must have been a tiny gap. When torquing to 80NM it caused the bush to fail
 

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Discussion Starter · #404 ·
Specialist engineering company said they couldn't really do it. They said the bike would need to be dismantled and they still couldn't guarantee no damage to the frame. They have given me the details of another company who I will visit tomorrow, an engineering company but one that specialises is one off stuff and bespoke work. TBC.
 

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Discussion Starter · #406 ·
40803


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The last picture is the bush. The left one was the first attempt which failed at 50NM. I was able to remove this without too much trouble. Thinking that my torque wrench was fucked I got hold of another one. The thread on the right is whats left of the second attempt. Again the bush failed uled at 50NM. The bottom part that is missing in the picture is whats stuck in the frame. There is a thread inside that the top mount bolt tightens into.
 

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Thanks for the pics. Isnt it the top mount bolt that torques to 80nm's?

I would have thought that bush should have been lubed to install at a lower torque and then the bolt loctited.

Dunno, l haven't RTFM and l don't have a 1290. Guessing really.
 

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No, its not. Its a right proper fuck up. Dealer said they doubt they can remove the bush, looks like a specialist engineering job. Going to talk to a company today. I'm worried that the thread in the frame might be damaged too.
Faaark
 

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Discussion Starter · #410 ·
Hard to get a sense of scale but it doesn't look very big, 80nm seems a lot for its size?
That's what it says in the manual and confirmed by the dealer
 

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Like I said, hard to get a sense of size. Is it m12 or m20? The latter looks like it could be the shock absorber support at 10nm?
 

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I’m with Ship on this, it’s the bolt that gets torqued once the bush is snugged up against the shock.
Is the frame supported and the shock bolt out? If so the bit that’s in there is not threaded so should just pull out with a bolt, socket and washer.
 

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In KTMs the bolt is usually M10 so the bush must be about M20 but fine.
Edit yes, says so in the chart above.
 

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Discussion Starter · #418 · (Edited)
You're all right in a way.

The bush screws in from the right hand side, I did it finger tight and then just snugged in up a bit but I didn't torque it. This has a left hand thread. The large bolt then goes through the frame from the left hand side, through the top shock mount and then screws in to the bush. This needs to be 80NM. I think the problem is either I didn't screw the bush far enough into the frame or the new Maxton shock is slightly narrower than then OEM. Either way there must have been a gap between the bush and the shock which has over stressed the bush causing failure. Either way its my fault. The remaining part of the bush may have 1 turn of thread remaining which means we can't punch it out but it won't turn either even when you come from the right side if the bike the bolt.
 

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You're all right in a way.

The bush screws in from the right hand side, I did it finger tight and then just snugged in up a bit but I didn't torque it. This has a left hand thread. The large bolt then goes through the frame from the left hand side, through the top shock mount and then screws in to the bush. This needs to be 80NM. I think the problem is either I didn't screw the bush far enough into the frame or the new Maxton shock is slightly narrower than then OEM. Either way there must have been a gap between the bush and the shock which has over stressed the bush causing failure. Either way its my fault. The remaining part of the bush may have 1 thurn of thread remaining which means we can't punch it out but it won't turn either even when you come from the right side if the bike the bolt.
Have you spoken to the guys at Maxton ? They may have come across similar and have a solution
 

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Discussion Starter · #420 ·
I haven't yet. But to be honest the fault is mine. I have spoken to Jim Aim about it and we've gone though the whole thing. The problem now is the removal of the broken part which none of them really have the experience or tools to do.
 
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