Subject: RV8 engine mount mockup
From: ACRE NL
Date: 7/6/2001, 4:35 AM

Gaylen Lerohl wrote:

Paul:
I've attached photos of my mount mockup.  I intend to build it with .75" x
.049" wall 4130 tube.  The vibration isolator support tubes will be 1.25" x
.065" with a .125" x 2" diameter washer welded to the end.  The aluminum
bars bolted to the oil pan are fabbed from 1/2" 6061.  The Barry mounts are
PN 26834-1 (6309K-36 McMaster Carr) 380# axial, 165# radial load.

Question:  The aluminum mount bar nearest the table has only one 6mm cap
screw on each side turned into the cast iron end housing.  The rest turn
into the cast aluminum cover.  Is this strong enough?

Your comments and suggestions are welcome.

Regards,
Gaylen Lerohl
RV8

Same thing on Gaylen's mount. I must be getting careless
for not noticing that. Thanks Mark. You need diagonals
Gaylen. Probably the easy way is add another firewall hard
point down near the center right next to the bottom skin.
You will have to beef up the joint between firewall and skin
with an aluminum angle on the inside.

Paul Lamar
 
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Gaylen-Lerohl-motormountB3.jpg