Subject: Shertz Beam
From: ACRE
Date: 3/30/2004, 10:21 PM


Jerry Hey wrote:

Paul,  looking at  the Rhino drawing "shertz-beam-clips. jpg,"  I am
struck by its  simplicity and light weight ruggedness.  This version of
the Shertz beam would be VERY INEXPENSIVE to build.

Is the material .063 4130?
How wide are the bent up flanges?
What is the width of the beam?
What is the distance between bolt centers?     From another drawing I
get 27.62"
Are the aluminum end plates  fastened in or just held by the Barry
Mount bolt?  How thick are they?
Does the pan need modification?
       Thanks,  Jerry


27.62 inches or less  is optional with a beam type side mount.
Bill used that dimension to allow exhaust system clearance with a simple
tripod mount.

Yes on the 4130 tubing or hat section sheet. The flanges are one inch wide
on each
side. If you made the hat section deeper, say 1.5 inch or 2 inch instead
of one inch
you could make the flanges only .75 wide. The blocks are 1/2 inch thick
aluminum
bar stock. They should be riveted to the steel with long rivets at all
four corners. This prevents them from working sideways and wearing out
the rubber motor mounts. Up and down is no problem. Fore and aft is no
problems as they are nested in the hat section.

Should be no oil pan modifications.


Paul, et.al.
I made spacers between the 1/2" Aluminum ends and the bottom of the beam to
allow torquing the 4 bolts on each end without crushing the rectangular
tubing.

I DID have to make a new oil pan, to allow picking up an additional two pan
bolts. But aluminum pan is much lighter.

I have not (yet) added the clips on the side, but I am planning to do this
when I start working on motor mount again.
Bill Schertz
KIS Cruiser # 4045

Will we need to do that Bill if we move it forward slightly, forget the 
two outer bolts and use the side clips? I could check at the hangar tomorrow
but I don't have an oil pan here.

Paul Lamar
 
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