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Date: Sat, 11 Dec 2004 21:39:20 -0600
From: Charlie England <ceengland@bellsouth.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Serious single rotor questions (serious??)
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Russell Duffy wrote:

> I still need to find some references for unshrouded fan design 
> though.......
> Any ideas or hints?
>  
> Thomas Jakits
>  
>  
> I talked to Bernie for a while tonight, and thought of one problem 
> with any design that requires a shroud, or fan larger than about 22" 
> in diameter.  I want to be able to roll this thing in and out of my 
> garage without having to disassemble it.  One of the first things I 
> did was to take off the 3-blade prop, and put on a 2-blade for that 
> very reason (and the fact that the Warp Drive prop looked like it had 
> eaten an entire cylinder).  I'm pretty skeptical that I'll do better 
> than a belt drive with a two blade prop.  
>  
> Thanks,
> Rusty  

There's a guy here in MS flying an 'ultralite' with a Honda CBR600 (?) 
motorcycle engine mounted low in the airframe (pusher). He uses a racing 
motorcycle chain up to a propeller shaft in pillow block bearings up 
where the engine is supposed to be. I've only met him once, but he 
claimed to have quite a few hours on it & flew it from  somewhere down 
on the coast to an ultralite flyin here in Jackson a couple of years 
ago. With 100+ hp racing bikes common now, the chain shouldn't have too 
much trouble with a 1rotor. 3-1 ratio shouldn't be too hard to do.

Charlie