Gordon Robertson wrote:
Hi fellows,
I am looking for a source of engineering data on the Lord or Barry mounts
for the engine. I need technical information, plus the dimensions. I
have checked the Barry website, but to my surprise they dont seem to give
technical specs.
Does anyone know where I can find this stuff?
Gordon Robertson
RV8 - 13b engine installation.
And some more. Can also be used in a composite firewall design.
Not to worry the 1/2 inch bolt can take the momentary bending loads
but the welding cup must be supported by parallel tubes
with the firewall as shown in this Perry Mick implementation.
Paul Lamar
Dean Head wrote:
Group,
I am very interested in the mount discussion as I want to fabricate my Cozy
MK4 mount. I see a couple of way that it has been done and would like to
take advantage of what folks have learned as I construct mine.
Dean Head
Cozy MK 4 #1040
This fire wall rubber bushing version was done for John Slade's Cozy.
IMHO it needs tubes parallel to the fire wall to beef up the minor
local bending loads on the welding cups and tube ends that hold the rubber bushings.
See the Perry Mick implementation jpg's uploaded above for details.
Also the washer that the 1/2 bolt goes through should be about
1/4 inch thick as it takes those minor local bending loads I spoke of.
One problem with these schemes is you might not have enough
room on the hot side of the engine for exhaust plumping, mufflers
and rad plumping. Generally speaking motor mount tubes going directly
to the engine tend to interfere with exhaust pipes, turbo's and mufflers.
It is a good idea to make a full size mockup up out of foam, your engine
and PVC pipe to check for interference's or use a good
3D program like Rhino, Solid Works or Pro Engineer.
You might also consider a simpler more conventional scheme
using a wide motor plate to move the motor mount tubes outboard
to give plenty of room along the hot side of engine for mufflers,
exhaust pipes or turbo's as in the third jpg.
Jerry Hey has a universal adjustable motor mount welding jig for
making such mounts.
Paul Lamar
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