The Black Pig took a bit of pain in Maroc so while the back ends out i thought i may aswell grease the swing arm !!!

Stopped when i saw this , bottom left of photo



**** pic !!!but you get the idea , about a 8mm gouge in the ally from the chain !!!


So looks like a new swing arm or see if i can get it built back up with weld

I'm going for a whiskey or 6 now !!!!

Phil

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"I'm here for a good time, not a long time"

Hm, bad luck . I wonder if the plastic protection thingy there (spare part 11D-F2151-00) should protect the swingarm from such heavy damage. Rtwpaul has the same damage btw.

Bad luck - that really is a bit of pain in the ar5e Phil.

It has happened before and seems to be attributed to riding for any significant length of time with the swing-arm past horizontal (the rear axle above the output shaft and front sprocket). More often than not it is due to either one, or a combination of: saggy OE Sachs shock, fitting lowering links or being heavily loaded for extended periods.

It will protect it, but only for a very short time if the chain is permenantly dragging along it. The protector is only really designed to prevent damage from chain-slap and occasional bottoming out.

Yep. His was down to riding a big distance on a knackered shock whilst carrying a heavy load.

Relevant post... http://www.xt660.com/showpost.php?p=170283&postcount=11

Whole thread... http://www.xt660.com/showthread.php?t=18703

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Standard links are 126mm. Fitting lowering links will do exactly what you suggest.

I've fitted adjustable raising links to mine and run them at a mediocre +15mm. I didn't do this to raise the rear as such, but to keep everything in line better when loaded up.

http://www.projection-components.co.uk/quad-length-jack-up-links-select-model-18-p.asp

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Cheers mate , should have read your post properly first time do like the look of the Quad jacks , simple but effective

Phil

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"I'm here for a good time, not a long time"

Phil, this seems to be a problem with a couple of Yamahas when the suspension is either too hard or too soft (wears either top or bottom of the slipper), combined with a kinked or too-tight chain and/or a smaller front sprocket. It doesn't take much...

References: I chopped out the top of a 426 slipper in 400km . Also, WR250Rs are noted for chewing the bottom out of the front slipper if the chain is too tight (even slightly), or a smaller front sprocket is used.

Imo, run your chain a bit loose if you can (watch out for derailment), with stock front sprocket and correct spring rate for load.

Sorry if I'm preaching to the converted. Just my experiences, that's all.

Hope you get it sorted mate.

The plastic thing just got eaten !!!

Probably make something out of mild steel when i get it back together !!!

Do you know what RTW Paul did to sort it , Weld it or New ????

Cheers Phil

Posting at the same time Pleiades !!!!

You got it mate , Knackered shock and loaded in the desert

I'll take a look at RTW P post cheers
Phil

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"I'm here for a good time, not a long time"

Got a new one! �450.

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Forgot to add

IF ANYONE SEES OR HEARS OF A SECOND HAND ONE PLEASE GIVE US A SHOUT

Cheers Phil

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"I'm here for a good time, not a long time"

Just found one on ebay:
http://www.ebay.de/itm/Yamaha-XT660Z-2009-Rear-Swing-Arm-11D-F2110-00-new-/271289357545?pt=AU_Motorcycle_Parts_Accessories&ha sh=item3f2a1b14e9

Another one:
http://www.ebay.de/itm/FORCELLONE-RU...item2a29d182f1