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Old January 10th, 2017, 10:32 AM   #21
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Originally Posted by monocog007 View Post
To use a judder spring though, we'd need an extra friction plate to match the outer diameter of the judder spring, correct?
This is true. I think the outer-most clutch disk is different ID to fit the spring and spring seat.

Still baffled why they didn't use a judder spring originally. It probably has to do with the "easy pull" clutch only providing a very small displacement at the clutch pack, so by combining the two you end up requiring a very careful clutch adjustment and perhaps not complete disengagement. Who knows... just guessing.
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Old January 10th, 2017, 01:04 PM   #22
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It's not a spring. It's there to position the narrower plate properly.
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Old January 10th, 2017, 01:34 PM   #23
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It's not a spring. It's there to position the narrower plate properly.
Like this, no?






Judder springs function like a belleville washer



Unless Ducati did something weird and funky with a plain washer. Don't see why though.
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Old January 11th, 2017, 06:47 AM   #24
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That looks correct, Kuksul. I seriously doubt that any dealer could supply those rings by themselves. I'm just going to save up some money and have the dealer install that 2015 clutch pack with my 9K service. After reviewing the posts on the other Ducati forum, it seems that nothing else is needed. It will add $700 to the service bill, but I'm keeping this bike for a while.

Heck, I've spent more on our 390 Duke, and it only has 1700 miles on it...
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Old January 11th, 2017, 07:45 AM   #25
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My plan is to try and find a lightly used 2016 clutch pack & parts, and go for the full upgrade. With enough of the parts, it should bolt in. If I don't find those by the time I need a clutch, I'll go the 2015 route.

I would really like to install the Ducabike clear clutch cover & hydraulic clutch, but that is way out of my budget.
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Old January 11th, 2017, 04:58 PM   #26
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2015 hypermotard clutch pack on ebay KIT FRIZIONE COMPLETA DUCATI HYPERMOTARD 821 2015 | eBay


My clutch isn't fully disengaging - cable adjusted correctly. Dunno - has to go in for valves so we'll see. Any suggestions?
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Old January 11th, 2017, 05:40 PM   #27
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2015 hypermotard clutch pack on ebay KIT FRIZIONE COMPLETA DUCATI HYPERMOTARD 821 2015 | eBay


My clutch isn't fully disengaging - cable adjusted correctly. Dunno - has to go in for valves so we'll see. Any suggestions?
even with zero slack in the cable it still won't disengage?
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Old January 11th, 2017, 07:53 PM   #28
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even with zero slack in the cable it still won't disengage?
That's right - I did try that. Then adjusted at the mid adjuster so the lever adjuster is right on the money.

It's partially disengaged but spinning the rear wheel is tough. Put it in neutral and it spins easily.
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Old January 12th, 2017, 07:09 AM   #29
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That's not unusual when the engine is cold, there will be some oil drag. I'll bet the old dry clutches were better this way.

By the time I pay for shipping, that clutch assembly will cost as much as the plate stack from my dealer. That's not even counting my 10% discount for buying the bike there.
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Old January 13th, 2017, 02:48 PM   #30
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Well, that's good to hear, but it seems tough on the starter etc.. I'll get more info from the dealership and post it.
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