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Date: Thu, 03 Nov 2005 10:17:38 -0500
From: Ernest Christley <echristley@nc.rr.com>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Shady Bend Report
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Bob Tilley wrote:

> Folks,
>
> Here's a picture of Tracy running the muffler. 

Tracy's expression is almost funny in that picture, and there was a 
brainstorming session on Saturday evening about how build a 'dyno' that 
isn't quite as dangerous or tortuous as a prop.  Lot's of ideas, with 
the best one being Tracy's suggestion that the best dyno is a flying 
airplane. 

Well, not having a flying airplane yet, I spent a lot of time 
considering it on the 10hr drive home.  The best I could come up with 
would be to use a  prop with reverse pitch so that it blows away from 
you.  That one would be easy.

The second best would be to tie the engine output to rear wheel drive 
vehicle's drive shaft, going through the differential.  Turn the axle on 
it's side so that the tire on the ground is locked in place, and forces 
the wheel on top to spin.  An adapter on the top hub would attach a 
propeller that blows up (applying a down pressure to stabilize the 
stand).  Remove the prop and put the wheel back on to transport it.

(I know.  I shouldn't be allowed to drive long distances by myself.)

-- 
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