Martin Dietrich

HERE IS a novel muffler that Scale builders may find interesting. It is made of thin-walled stainless steel tubing and is installed, along with an O.S. .46 in my EZ ARF Focke-Wulf FW-190. I began by using a coping saw to cut the exhaust flange from 1/16 sheet stainless steel. If my experience is any indication, you can count on breaking at least four saw blades. Next, I bent the flex tubing by hand and silver-brazed it to the exhaust flange. The opposite end was closed off with a thin brass sheet and soft soldered with 450º solder. The large cooling surface keeps things quite cool, so the high temperature is not a problem.