NGC-Never saw this before.....

[SIR REAL ED]

People are such creative problem solvers!  Sometimes you just have to wonder what they were thinking.

When I bought the TDM850, the seller knew there was a problem he did not have time to look at, described the problem well, and discounted the bike appropriately. 

For you Guzzi types, the first picture shows a motorcycle drive chain with the sprocket studs interfering with the chain adjuster block.  I'm sure most of you are thinking what I thought, axle misaligned, or, missing or wrong spacer on sprocket side.






Alignment was part of the problem, but there was more.  The second picture shows the chain adjustment slot on the outside of the brake side of the swingarm.





The last picture shows the inside of the swingarm on the drive chain side.  I suspect that this is  someone's solution to a problem that did not exist.  Hard to imagine a loose axle allowing the chain side spacer to machine a spacer diameter hole thru the inside of the swingarm.

[s1120]

Thats crazy!!  At first glance I thought the bolts were in backwards.. This is far worse. Im guessing your swingarm shopping now.

[grebmrof]

Could the sprockets be on backwards?  If the sprockets are dished perhaps one or both are mounted backwards.  My son found his front sprocket on his KLR650 mounted backwards and interfering with his chain guard, he flipped that sprocket around and the chain cleared the guard properly, and all was well.  Maybe the spacer is the problem?  or missing a large washer on the chain side?  Let us know what the solution was.

[kballowe]

Oooof.   It's good that you discovered the issue. 

[SIR REAL ED]

Could the sprockets be on backwards?  If the sprockets are dished perhaps one or both are mounted backwards.  My son found his front sprocket on his KLR650 mounted backwards and interfering with his chain guard, he flipped that sprocket around and the chain cleared the guard properly, and all was well.  Maybe the spacer is the problem?  or missing a large washer on the chain side?  Let us know what the solution was.

Those are studs that are bottomed in the sprocket carrier.  The sprocket is dished, but the length of the studs will not change.

Swingarm wall thickness is 1.5 mm, so there would have been enough clearance prior to "Custom Machining."

Surprising number of swingarms on eBay for TDM's.  Should have one in hand by Saturday.

In the meantime, for testing purposes, flatwashers and "Redneck Engineering" will carry the day!

Especially strange since the rest of the bike is almost pristine and seems well cared for.

I guess someone got a die grinder for Christmas one year and ..........

[FarmallA]

Maybe a PO tried to move the wheel over to get clearance for a fatter tire?  Seems like a dumb way to achieve a dumb idea though.

FarmallA
Steve

[Huzo]

The chain and sprockets look good from here…

[SIR REAL ED]

The chain and sprockets look good from here…

This is why one should ALWAYS consult Huzo.

That is a brand new chain, and sprockets have almost no wear.

Important things everyone else overlooked!