I think so but 1/4 inch bolts will also work. It is mostly compressive
loads between the motor plate and the horizontal plate. You could also
use some 2 1/2" by 2 1/2" thick (1/4")  wall extruded Al angle and merely bolt
it to the bottom of Tracy's motor plate. Thicken it up to a 1/2 inch
where the rubber bushing holes go. Industrial Metal Supply in Burbank
CA has a web site and they will ship nationwide.

You might have to move the starter by welding on a piece of 1/2 on
the side of Tracy plate.

Paul Lamar

The angle plate bolted to Tracy's motor plate might indeed work, as I
could aim the flange away from the plate and gain a little
pylon width.  I'll check this out as well.

Thanks again,

Scott Gettings

You could also use some smaller angle front side and back side and
just bolt the Schertz beam to the plate with a bunch of bolts.

Paul Lamar

Hmmm.  This is VERY interesting and would fit in the Goose pylon.  Is it OK to
assume that I could make a "U" channel using two, 0.25" 6061 angles, say 2 1/2"
(horizontal) on one side, with sufficient vertical (maybe 3-4") on the other?
In order to get the mounts low enough and get to the bolt holes, one side of the
angles will need to have a vertical height of at least 3-4", which are readily
available.
So one angle bar would be bolted to the block and the other to Tracy's plate,
"sandwiching" Tracy's spacers.  If the horizonatal parts of the angles
overlapped, they would be 1/2" thick, which would fulfil the need for the Barry
mount plate thickness without adding other material.  The horizontal overlaps
could bolt together in the center sections if necessary.

Sorry to say I don't have Tracy's redrive drive yet.  Is the distance between
the redrive plate and the block (the spacer length) precisely 2.5"?  I can get
this measurement from Tracy if it not handy; but his site doesn't have detailed
redrive drawings.

Thanks again,

Scott Gettings

I am not sure I follow you here. If you send a sketch I can knock out a 3D.
The distance, as I recall, is 3.050 inches.

You can also buy 3" inch high channel 1-1/2" wide flanges  1/4" wall.
http://www.spicerindustries.com/metal/alumangle2.html

You could shim this to 3.050 and use it as a combined PSRU plate
spacer and as a Schertz beam. You would have to thicken it where
the rubber bushings go. You could also slot it for ring gear
clearance if necessary. I think even Tracy would like this idea :)

Paul Lamar

Is this about what you had in mind Scott? Shorter of course.

I took a look at the extrusions available and nothing looked
entirely suitable. This could be bent up out of 1/4 inch 6061 T6 sheet
if you can find a heavy duty sheet metal shop. You will need
two inch wide flanges minimum due to the off set of the right
mounting bolt. I like the idea as it makes one part do two jobs.

If it catches on I can get some made in LA.

Paul Lamar
 
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