Thanks for the link, RM.
Since I live close to Revloc, I went over to thier place today to have a look at the dyna ring. I talked to Alan, who I assume is the proprieter of Revloc.
The dyna ring is basicly a thick friction plate with all the balls inside of it. When you spin it, it gets thicker and engages your clutch. Normal adjustment for it is to have your clutch cable adjusted pretty tight, to hold the pressure plate off of the clutch pack to get a certain amount of clearance. When you spin up the dyna ring, it takes up that clearance and engages the clutch.
In order to bump start, you have to loosen your clutch cable so it lets your pressure plate clamp down on the pack.
Pretty simple, really.
I also found out that the regular auto clutch they make works just like the Rekluse pro, with all of the same adjustability. And, since the KX500 was the first bike that Revloc made the auto clutch for, they are available. They also fit under the stock clutch cover!
torch