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Old July 9th, 2019, 08:13 AM   #1
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Joined: Sep 2017
From: Lansing Mi
Posts: 232

I Ride: 2013 hypermotard/hyperstrada, 2005 zx6r, drz125, crf50 crf70
Dry clutch conversion

Ok, so here we go. I'm committing to this.

You may ask "but why?". The 3 biggest reasons for me, 1- emotional, 2- why not and 3- THAT SOUND!!.

What I have learned so far, this is a pretty easy job for the 13-14 bikes. They share the same internal design as the 1098, 1198. Streetfighter, 999, 748.....basically the last generation of motors. The 13-14 use a separate bolt on oil pump assembly where the 15+ bikes have the oil pump cast n machined into the case itsself(notice differences in schematic pics).

This can be done on the 15+ bikes but need the clutch oil tube modified to clear the bigger 'knuckle' on the oil pump(the clutch cover comes in contact with that point of the oil pump).

My bike is a 13 so its 'Thundercats GOOOO!' for me. I mocked up the dry clutch cover and gears and it is all lining up perfectly. You need both primary clutch gear and secondary gears to make this work(I'm not sure about needing an oil pump gear off the 999 motor yet because the dry clutch gears mesh up perfectly in mock up).

I currently do not have a clutch for this conversion yet, I intend on getting the Kbike slipper but might juts grab a used clutch for really cheap just to get it going.

You may notice that the oil site glass is in a different location to the OEM hypermotard piece. It looks like they are parallel with eachother and the ground. I will watch the window as I fill it up and take note of what it takes.

This all started because my OEM pressure plate cracked. I reached it with a billet Ducabike pressure plate. So far it is holding up but during mock up of the dry system I installed stiffer Barnett springs and expect that the Ducabike plate will fracture too. I also have the judder spring kit. I installed it a couple years back and it made the OEM clutch more predictable and live-able in daily life(this is my daily driver). . I converted to hydraulic clutch actuation. I also have a rapidbike quickshifter. I installed the stiffer springs because it feels like it is slipping while hammering the quickshifter. Now, to break it all down, the slipper assembly was engineered to work with OEM springs and without the judder spring. I believe that judder spring (along with age, I have 17k miles on the bike) created the slipping. Adding the stiffer springs should help eliminate slipping but now the slipper springs are impacted by the change. I believe it to be a tension balance between the springs.

This is what I have learned so far. I will continue to update as I progress.
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Dry clutch conversion-20190708_173129.jpg   Dry clutch conversion-20190708_172834.jpg   Dry clutch conversion-20190708_172844.jpg  
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Old July 9th, 2019, 08:27 AM   #2
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Joined: Sep 2017
From: Lansing Mi
Posts: 232

I Ride: 2013 hypermotard/hyperstrada, 2005 zx6r, drz125, crf50 crf70
Notice the wear on the ducabike pressure plate. There is only about 2k miles on it.
Notice the differences in Barnett spring and OEM. Its subtle but they are slightly thicker(and only like $25).
Notice the fractured OEM plate. 2 of the spring pockets are fractured at the end and around the cup

I also did the factorypro detent shift mod about 2k miles ago. It requires more force to shift bit it definitely locks into gear with every shift. It has a stiffer spring, smaller roller and ceramic bearing. It almost eliminates all false neutrals. Although, while being lazy shifting I have hit a false neutral between 5th n 6th a couple times still.
Attached Thumbnails
Dry clutch conversion-20190708_183051.jpg   Dry clutch conversion-20190708_183157.jpg   Dry clutch conversion-20190505_094946.jpg   Dry clutch conversion-20190505_095027.jpg   Dry clutch conversion-20190504_212746.jpg  

Dry clutch conversion-20190504_184808.jpg   Dry clutch conversion-20190504_214204.jpg  
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Old July 9th, 2019, 08:33 PM   #3
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Is the Ducabike Pressure Plate cast or billet?
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Old July 10th, 2019, 02:56 AM   #4
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From: Lansing Mi
Posts: 232

I Ride: 2013 hypermotard/hyperstrada, 2005 zx6r, drz125, crf50 crf70
Quote:
Originally Posted by BadToTheBown View Post
Is the Ducabike Pressure Plate cast or billet?
Appears to be billet to me. The whole thing is covered in machining marks. Not that it coukdnt have been cast then machined but I think its billet.
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Old July 10th, 2019, 08:53 PM   #5
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Posts: 308

Then that's better than the cast one from the factory...please keep up the project, I'm anxious to see how it comes out...
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