George Moore wrote:

Paul,
   As one of the members of this group who suffers from double Rotary
addiction in the form of Rotorcraft with Rotary engines, I always like
to share with you all of the Gyrocopter applications of the mazda 13B I
come across. Although I didn't get to attend this Fly-in, I thought you
would enjoy seeing these photos of some senior citizen Rotorway Scorpian
helicopters running Mazda Rotary engines.

The Blue machine shows some incredible attention to detail, but thanks
to my education from this group, I immediately critiqued the stress on
the eccentric shaft (3rd picture) imposed by the drive belts on the
cantilevered drive pulley !  It really makes me wonder how many people
are really flying with Rotary engines ? I'm starting to think alot more
than we, in this group even imagined !  There are a handful of people
installing Rotary engines in the dangerously underpowered Mini 500,
including our own Jim Dana !

Take Care in the Air,  George

http://www.usbusiness.com/helicopter/WScor1.htm

Wow! That's a realy nice looking  Mazda powered scorpion.
The only thing that bothers me is the bending and side 
loads on the e-shaft from the belt drive. There should be a 
bearing out there outboard of the belts to help with the
side and bending loads. This is what it looks like from the
picture but I suppose there could be a hidden internal
bearing within the pulley.

Paul Lamar
 
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