I would really like to know what the rotary group thinks
 > > >> of the attached concept as outlined by Vance.  A
 > > >> standard clutch would really be a boon to the light
 > > >> helicopters by eliminating the typical belt tensioning
 > > >> assembly and the use of vee belts in general.  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

I had the Coleman coaxial throwout bearing out to replace the seals after 5
years of racing, so I took this picture. It is designed to function in a dirt
circle track car running two or three nights a week. It is more substantial
than is absolutely required for aircraft use. The freeplay is adjusted by
adding washers behind the throwout bearing. Much of it could be cut away to
save weight without penalty in function. Cost is under $140.00.

I'll be damned everybody is making my hydrulic throw out bearing that I invented
back in 1972. That is one I should have applied for a patent on. PL

I use a Tilton flywheel for a Chevy (5 1/2" diameter) with the center hole
cut open to fit over the indexing shoulder on the Mazda counter weight. New
bolt holes are drilled in the flywheel and drilled and tapped in the counter
weight to mount the flywheel.

The clutch is a 2 disc Tilton 5 1/4" unit. There are similar clutches
available that are less expensive. There are some used racing equipment sites
where clutches are listed. We use a custom ring gear that bolts to the outer
edge of the flywheel, but a flexplate would work as well.
Lynn E. Hanover

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