Subject: Blake's machine shop
From: ACRE NL
Date: 10/23/2001, 9:52 PM


How many others would be interested in a PSRU/plate like this?
Paul Lamar

         I'm interested in one.  Mine is for an RV-4 and though I'm not
planning to use the wide mounts on this picture I need something like this
to mount Tracy's redrive (when he gets the 2.85 version ready)..  Of course
this would be a batch operation but one with only the starter mount
sticking out would be nice.
         $300?   Well...that would have to look real pretty for $300 (yes,
I'm a cheapbastard).
         My memory fails me, does the thickness need to stay the same for
Tracy's redrive or can it be thinner if I'm not using it for the motor mount?
Mike
Mike McGee, RV-4 N996RV, O320-E2G, Aurora, OR
13B in gestation mode

Yes it needs to be 1/2 inch thick. The web could be as little as 1/8 inch thick
in the bottom of the pockets. What width would you like for the motor mount
brackets?
Paul Lamar

Paul do you have this as a DXF, DWG, NFL, STL, VDA, SAT, or IGES format? (DXF, DWG or
IGES MasterCam seems to like the best)
Blake

This is Bill Schertz version of Tracy's drawing but as I recall one or
two dimensions were wrong. It is also higher than it need be at 17 inches.

Blake, if you leave the outboard elephant ears blank
people can cut them to any width motor mount spread they want.
This will make more people happy.
Paul Lamar

OK Paul I successfully received the zip and translated the IGES file with little problem.
Pulled out the important parts of it and saved that, but is the bolt circle in the CAD the
final one?

I think that I can cut the plate in 2 separate setups. So that should work. I then did a
preliminary NC tool path layout and got an answer back of 9.5 hours(just milling time),
yow! The pockets do look very sweet and remind me of some military bulkheads in the F100's.

The side ears can be left without cutting.
Blake

When I go down to Tracy's I will look at the drawing on his computer
and increase the size of the dimension text so we can get that bolt circle right!!!!!

Oh well 9.5 hours milling time does not sound cost effective. Perhaps  hydrajet cut outs
are the way to go for low cost. Too bad! It sure would look trick.

Paul Lamar
 
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