Dieselwiesel gearbox/plates

[Peter the blacksmith]

Hi, I am wondering if any of you guys have a clue how long the plates in the dieselwieselgerabox will last, if they are not drenched in oil ?
I ask this, because I am planning to build a dieselwiesel myself. I got a frame (Suzuki GZ 125cc) and bought the Yanmar-clone 406cc engine.
Looking at the few DW 406 pictures you can find on the net, I see the primary chain is dry, it is just put behind some dustprotection-box.
So - I start to wonder how will the clutch work, if the plates are dry ?
Well, they've made about 70 DW 406s so far, so it looks like they work...but it would be nice to hear somebody who has any experience.
(Tried to post this question on the German forum but had technical problems)
Thanks for your time, gentelemen !

[Peter the blacksmith]

Oh, no answers...?? I thought you guys knew everything

[gearhead1951]

Dry clutches work better and last longer on average than wet ones in my experience and knowledge!

[coachgeo]

There are two clutch types used on bikes and they are commonly described as being either a wet clutch or a dry clutch. Have been that way a long time so can only guess they both work. All manual automobiles are dry clutches.