I built a steam powered tricycle but have been having problems going
any distance with it.
It has a combination firetube - watertube boiler and when fired hard
the water bubbles up and goes out the outlet, locking up the engine.
I am building a trap consisting of a brass vessel about 1-1/4" dia and
3-1/2" long.
I plan to put insulation on so as not to lose too much heat.
I'm trying to decide what would be the best material for this.
It should be inexpensive, fireproof and easy to apply.
Any ideas?
Engineman

http://engineman69.home.comcast.net/.../onwheels.html