[Geoffrey_K]

I called Trenier outdoors to ask about plenum for my disco double since i have a reg here. I was told, "you are the 3rd or 4th person to call this last week to ask"

sadly Huma will not separate the parts, so i was out of luck.

I began to dig around for something that was the right OD and after a trip to the hardware store I returned home to ponder.

What I located was an old and broken 4x15 scope and it was a very close fit to the ID of the disco tube, so a quick cut with pipe cutters to get a nice flat area on both ends and tada .. I have plenum.

Since the scope was thicker than i really wanted from the plenum I decided to go with 4 inches. I am not trying to get much more than 25-26 FPE from my disco double, so think that is more than adequate

Since others had called him to ask about plenum only, I thought to toss out what I decided to try out. Maybe it will help someone and possibly cause someone to mention where one can get 3/4" OD pipe with thin walls.