Do you
 > > > think there any inherent dangers in running the clutch
 > > > at 5500-6000 rpm for extended periods.  Please feel free
 > > > to throw out any suggestions as further ideas or
 > > > hardware recommendations there are a number of builders
 > > > looking for a solution. In case your curious, this is
 > > > for the Helicycle, www.helicycle.com
 > > >
 > > > Thank you all,
 > > >
 > > > Ed Angell

 > > Nah! The racers use them to 9500 RPM all the time. Plus you
 > > can buy special low diameter multiple plate racing clutches.

           We run a Tilton 2 disc 5 1/4" clutch and flywheel over a custom
open spoke flywheel. I used to do the same thing over a flex plate. Never a
problem up to 9,500 RPM. Since the side Bridgeported 13B can get 300+HP I
would guess that 100+ HP
single rotor periphery port at 6,000 RPM is doable.  Lynn E. Hanover

 
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