Message-ID: <0c5901c44009$6207acd0$c8918843@7n7z201>
From: "William" <wschertz@ispwest.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-83544@logan.com>
Subject: Re: [FlyRotary] Shertz Beam
Date: Sat, 22 May 2004 09:13:26 -0500
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Eric,
When I put together the prototype of the motor mount, I posted pictures to
both lists, I think. At the time of designing it, I did stress calculations
on different 'beams' to find a combination of dimensions and materials that
would put the bending stresses into an acceptable range. I settled on 0.065
wall rectangular tubing measuring 2" x 1".  I wanted to mount the oil cooler
below the motor mount beam for easy access to air.

The further work that Jerry Hey has done, making it a 'hat section' allows
easier fabrication, and he is statically loading the beam to test it, which
I did not.

BTW, I did not name the mount.

Bill Schertz
KIS Cruiser # 4045
----- Original Message ----- 
From: "Eric Ruttan" <ericruttan@chartermi.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, May 21, 2004 10:11 PM
Subject: [FlyRotary] Shertz Beam


> I have examined the "Shertz Beam" Motor mount on "the other" Mail List.
>
> Searched and did not find a comment on this list.
>
> Other than it is recomended by "The Other" list, is there anything wrong
> with it?
>
> I am looking for solid/semi solid engineering critique.  I really dont
want
> to talk about "feelings" or "preferance".
>
> Thans for your time.
>
>
>
> >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html