Subject: Schertz Beam Motor Mount
From: ACRE
Date: 5/18/2004, 5:10 PM


Jerry Hey wrote:

Paul, here is the prototype of your sheet metal Shertz Beam. This
one is mild steel, is only 15.5? between Barry Centers. I did it to
see what problems would present themselves. The stock oil pan was
used as a fixture for positioning the side clips. The little lip on
the pan flange was ground off where it interfered. I reversed the
flange on the side clips in order to follow the curve of the pan.
By doing so, one bolt hole was picked up.The two outside end bolt
holes cannot be used unless the hat section is notched or a custom
pan is built. Since the hat section exerts clamping pressure over
this corner of the pan flange, I don?t think the bolts are needed.
I will move the Barry centers closer to the end of the beam (1.25?)
than I have them in the prototype (2.5 inches). No real problems
were encountered during construction.

Advantages:

1. No complecated machining.
2. Economical.
3. Retains stock oil pan if so desired.
4. Light weight. Bathroom scale says 5 lbs including Barrys.

The MMP fixture was easily modified to the Schertz beam.

Awaiting critical comments, but I think this thing is a winner.
Jerry

PS: I have a need for a 13B oil pan, a 20 B oil pan, and a JUNK 13B
rotor housing. If anyone can help out with these items, it would be
most appreciated. I have checked the local wrecking yards looking
for a complete 13B junk engine to be used for fixturing. So far no
luck. If anyone has a boat anchor 13B out here in the mid-west that
they don't have a use for let me know.


Nice work Jerry. Perfect. That is the short version. Could be as
much as 30 inches long..
center of rubber bushing to center of rubber bushing. I am happy to
see it fits
the unmodified Mazda oil pan.

Paul Lamar

Bill Schertz wrote:

A couple of straps welded across the bottom of the hat section to
keep it from spreading under a hard landing down force would
strengthen it.

Looks really good

Bill Schertz
KIS Cruiser # 4045--


Thanks Bill,   I was hoping that you would approve.  I will have some
pieces sheared from scrap that can be welded  inside the hat section.
Åre you in Indiana?  I would like to visit sometime and see  your
project.   Jerry

The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2003 All world wide rights reserved.