Subject: universal welding jig
From: ACRE
Date: 11/14/2004, 1:04 PM


Robin Ream wrote:

Finally there are several services out there that can weld parts for
you.
Jerry Hey has a universal welding jig and can weld custom motor
mounts and mufflers.
Tracy Crook makes gear boxes and engine EFI/IGN control computers for
rotaries.
Tracy 2.85:1 gear box is recommended for swinging a large diameter
fixed pitch
prop for good vertical penetration.
    Is there a picture of Jerry's universal welding jig somewhere
that could be posted?

Robin

I have a couple. Is this OK Jerry?

Paul Lamar

Sure,  the only changes I have made since the fixture was built is I am
now using plywood instead of steel for the table top.  Basically,  on
the plywood I locate the hard points where the motor mount will attach
to the firewall.  The center of the post is the center of thrust.  It
can be adjusted up and down to get the prop flange to firewall
distance.   Originally the motor mount plate was attached to the round
plate at the top of the post.  Now the S beam is clamped to the
aluminum plates which locate it below the center of thrust. It is quite
accurate and a piece of cake to use.    Jerry

The Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2004 All world wide rights reserved.