Originally Posted by hookedonrc
I just received a dummy radial casting through Bob Dively and will be using it in an Aeroworks Cessna 195. The casting is ABS plastic and is fairly strong, but I am thinking of adding to its strength by pouring casting material into the hollows of the cylinder heads on the backside. Doing this will also provide attachment points around the circumference for mounting and add strength when I cut out the shape of the engine. I could use normal resin casting material, but it is made to release and I want the material to become part of the back side of the cylinder heads. Can anyone provide me with what material I should be using?
I installed a Dively 7 cylinder radial; in my Cessna Airmaster. I supplied additional strength and a mounting method, by the addition of a ring, cut to the inside radius of the cowl. The ring is apporimately 1" wide, and was glued to the back of the dummy radial's cylinder heads. I used Goop to attach the ring inside the cowl.
I didn't feel any more support was required. If you will require nose weight, pouring resin inside the cylinders is a good idea. Be careful what you use, though. Any resin that disperses heat, like epoxy, may deform your piece.