Mailing List flyrotary@lancaironline.net Message #33589
From: Ernest Christley <echristley@nc.rr.com>
Subject: Re: [FlyRotary] Re: It runs!
Date: Tue, 12 Sep 2006 13:04:09 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Ed Anderson wrote:



If you find the equation, I'd like to see it.  A 4" square piece of timber is more than I would care to have swinging at 2400 rpm in front of me {:>).

Ed

For a test stand, the timber has safety advantages.  It will produce lots of vortex energy in the air, but no directional vectors.  There won't be 180 horses trying to pull the engine off the stand, pulling the stand over, or picking up debris and blowing it directly in your face.  Any piece of wood that hits you spinning that fast will sever a body part.  A piece of timber that large can easily handle the tensile loads as long as the grain is straight and is knot free.

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        ,|"|"|,              Ernest Christley       |
----===<{{(oQo)}}>===----    Dyke Delta Builder      |
       o|  d  |o        http://ernest.isa-geek.org  |
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