Here is a picture of the wiggins on a Continental liquid cooled
engine in Patrick Swazey's Cessna twin.

I did not realize that the Wiggins was for attaching aluminum tubing
together until tonight.   I thought it was regular hose.  Is it limited to
180º? Every fitting in my set up changes direction.

  Seeing the Swazey picture, I am now thinking about making the long run
back to the radiator out of aluminum tubing.  It would be lighter,  have a
greater interior volume, and would  probably flow with less resistance than
hose.  The straight run from the back of the fire wall to the radiator is
about 60."

Jerry

That is the only way to do it Jerry. Hose would be out of the question.
Wiggins will take some small axial mis-alignment +/- 3 degrees.
It will also take plunge up to about a 1/4 of inch which allows
some expansion and contraction. You buy bends and weld them to 
the aluminum tube.
 
Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org