Subject: Schertz beam
From: Rotary Engine
Date: 4/22/2006, 4:59 PM
To: AAme



> Jerry,
>    Send the S-beam with the Barry Mounts installed. Also, send  me  your address so I can mail a check for $???   This is for an  acro  biplane with "G" limits of (+) (-) 6. I remember you did  some  "scientific" tests with a block of wood and a truck tire. Are  you  comfortable the S-beam will handle these loads?
> Thank you,
> Randy

>>
>>> Hi Jerry,
>>>    I am looking for a beam to mount my RX-8 do you still have  one  for sale?
>>> Thanks,
>>> Randy

>> Randy,  I do have S-beams available.  Do you want just the  beam?   Or do you want the Barry Mounts installed?  This involves  no more  than  welding a Barry Control snubbing washer to a 3 inch  long  bushing.  If you don't know what I am talking about, I can  send a  picture.    Jerry
>>
>

Randy,  there is no doubt about the adequacy of the S-beam to deal
with any flight imposed loads including hard landings.  I will have
to order a set of Barry Control bushings and snubbing washers which I
will do on Monday.  Once they are received I can quickly assemble a
beam and send it to  you.  The beam will come ready to install.  Are
you aware that the RX-8 oil  pan will require modification to fit the
S-beam? Also, are you aware that the S-beam only controls the front
of the engine.  The rear engine load is controlled by a strut that
goes to a hard point, usually on the firewall.  There are drawings
and photos of how different builders handled this.  I am sure you are
aware that Paul L. will design a bullet proof engine mount for you
using the s-beam.  His drawings are the way to go.  The engine should
be installed far enough forward to have adequate room between the
engine and firewall.  This will have very little effect on the c.g.
if the plane was originally designed for the 0-320.  If I was
designed for the 0-360 than you can move the engine forward even
more.  Fine tune the cg later with battery placement.

  The price is $100.00 plus shipping.


   Regards,  Jerry

Jerry, how long are your beams? Randy has a narrow
fuse as it is single place bi plane. Therefore I cut the beam
down to 22 inches. BTW that also makes it much stronger
than the 30 inch beams.

Paul Lamar

The beams are 29 inches between centers.  Randy could easily cut one
down at his favorite machine shop  or I could do it for him.  Do you
remember I made a motor mount plate a long time ago that was 22
inches between centers.  It worked out o.k. but snaking the exhaust
through the tubes was a challenge.  Can you take a look at the
Renesis exhaust with the new S-beam location and the 22 inch
centers?  Just need to know it is possible.   Jerry


OK I'll get to that shortly but I don't anticipate any problems.
You won't get a muffler in there for sure.
Probably the stock RX8 exhaust manifold, now that it is made
from sheet metal, is a good starting point.
Can anybody measure the width of the stock RX8 exhaust manifold
for me?

Paul Lamar

Might be able to flop this over and have the tail pipe
point toward the rear (front on a car) of the engine.
Does anybody have an RX8 exhaust manifold and is willing
to try this trick on his RX8 engine?
If worst comes to worst one could always saw it off
just before the dog leg.

 Paul Lamar ...No rotor no motor.



I'm planning on using the stock RX-8 exhaust manifold, with the
unnecessary air injection components cut off, and it shortened to the
dogleg.  I'll have to see if someone can weld on a new connector at
this point.  I found some 321  ball joint connectors in 3" diameter
that might work.

I'll get the measurements from my header.  Mine is already pointing in
the right direction (pusher!).

Scott Gettings



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