"cavelamb himself" wrote in message
news
Stuart & Kathryn Fields wrote:

I'm looking for a source of 1 1/2" flexible exhaust tubing. Mild steel
is acceptable. I want to use it for a model of the headers of a tuned
exhaust for my 0320 Lycoming engine that I have mounted in my Baby Belle
helicopter. The idea is to have 4 equal length pieces attached to exhaust
flanges bolted to the cylinders, arrange the 4 pieces to intercept the
4-into-1 collector, coat the tubing with epoxy resin so that the shape is
maintained and then present these pieces to be copied by the exhaust
bender.

Stu

I did one a long time ago using elbows and pieces.
(Couldn't spend money on it, so)

To "measure" the pipes, I filled the sample pipe with water
and measured the volumn of water for each pipe.

Lengthen the short ones, shorten the long ones.

It was a bit of a hassle, but it did work ok.

For what it's worth...

Richard

Thanks for the tip on measuring the pipe length using water. Neat.

Stu