Hi Joe,

Yes, I use the spacer blocks (two of them) of the RD1C  to hold an 4130
metal tab with a bolt hole in it.  Once Tracy impressed on me how important
precision concentricity was, I decided against trying to machine off enough
material from the spacer to compensate for the thickness of the 4130 metal
tab.  Instead, I cut a slot part way through the mounting tab - just enough
for the spacer through bolt to catch the mounting tab.  That way the
original length of the spacer bar did not get mess with.  Its been working
fine for over 5 years.

Here is a photo that shows the two lower motor mounts (white) with the
mounting tabs sticking up. These mounting tabs have another trangular plate
that this tab mounts to using Barry mounts.  Then one corner of the
triangluar piece has the told for the mounting bolt.  They fit into the slot
in the lower (well, mine engine is rotated 90 deg - so you'll have to mental
adjust in your mind) I machined into the RD1C spacer blocks.

In the EdEngineOff photo if you draw a horizontal line from the tabs of the
white motor mount to the right until it intersects the back of the radiator
you can see the black Barry mount and the white trianglar piece still
attached to the RD1C.  Sorry, I don't have any better photos.



Ed

--------------------------------------------------
From: "josrph berki" <jskmberki@windstream.net>
Sent: Friday, May 13, 2011 5:07 PM
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] RD1C

Has anyone built their motor mount where the rear of the motor is
supported
via the bellhousing bolt locations?  I mocked this up thinking that I
could
cut the spacers for the RD1C down and use the same locations.  Upon
reading
the instructions from Tracy, he locates the plate that supports the drive
using two of these bellhousing bolt holes that have dowels pressed into
them.  My plan is to machine a steel bushing that fit over these bushings
and enlarge the holes on the motor mount arms to fit over it.  The part
that
protrudes past the arm will be turned to the diameter of the dowel so that
Tracy's spacers will line up with the dowel locations.  That way the plate
that supports and aligns the drive does not carry motor mount loads. Does
this sound OK?  Thanks for any help.

Joe Berki
Limo EZ


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