Message-ID: <00e001c44014$a24dfc80$0202a8c0@eric>
From: "Eric Ruttan" <ericruttan@chartermi.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-84080@logan.com>
Subject: Re: [FlyRotary] Re: Shertz Beam
Date: Sat, 22 May 2004 11:51:17 -0400

So it's your fault it has that horrible name? :)

The idea seems a little different, so I wanted a bunch of eyes to take a
look.  My buddy tells me the same idea is used on his contentinal.

I have posted pictures of the mount at www.canardaviation.com/forum

A direct link to the post tinyurl.com/2ms2d

Some folks there had some questions, and some seemed a little critical.
They are a frendly sort, but I think they need an explination.  Feel free to
respond to their questions, if you wish.

I only have pictures of the beam itself, although Paul posted a pic with a
rear mount show.
Do you have any pictures of the "third mount".
Do you see any weekness in the mount, compared to a bed mount?
Can you explain how it will handel gyroscopic loads?
Do you see any reasong not to put it in a canard pusher?
Do you have your origional pictures I could post there?
I have talked to Jerry and I am looking forward to getting his production
mount.
Driving ahis truck onto his mount does it for me.


----- Original Message ----- 
From: "William" <wschertz@ispwest.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Saturday, May 22, 2004 10:13 AM
Subject: [FlyRotary] Re: Shertz Beam


> 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
>
>
> >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html