If a person was to convert a 13B that happened to be sitting around to
P-Port, how does one seal around the P-Port tube that goes into the rotor
chamber.  The area where the tube goes through the housing is a water
passage.

I suspect the answer is "JB Weld" or some other epoxy. But will that really
hold up in the long run without developing even little cracks that water
under pressure won't go through?

Thanx,
Joe Hull
Cozy Mk-IV #991 (In Phase1 Flight Test - 40.2 hrs flown)
Redmond (Seattle), Washington

Joe,

There are several methods. 1 is of course the JB weld method. Many other methods are possible as well. Some people have threaded the area if a round tube is used. Sealler is still advised, but is less likely to leak or fail on the threaded section. A light press fit is another option. Use a minimal amount of sealer just to be sure. I am trying to do a interlocked tube using a shrink fit using liquid nitrogen to cool the tube insert. As many possibilities as people doing the mod I guess!

Bill Jepson