Building a 1/5 scale Orline Sopwith Pup, and im trying to find either a Le Rhone or Gnome dummy engine in 1/5 scale.
Williams Bro. doesnt offer that size does anyone know where to find one?

The 2" scale is the same as 1/6 scale 12/2 =6

The 1/6 scale is 6 1/2" dia

1/5 scale would be about 7 3/4" dia

You could make one with 9 dowels glued into a disk with some thread around the cylinders for fins etc

Yea, my cowl is a 8" dia. I was really hoping to find something useable in 1/5 scale. I COULD make one if i have to.
What about using 1/4 scale and trimming down the tops of the Cylinders to fit. You dont see the tops anyway correct? Although i dont know how out of scale visually it will look. I dont want it to look like a way oversized cylinder.

That sounds like a great idea

You could always use Cox cylinders. They are very cheap now. Try xenalook, they have loads.

Frank Tiano Enterprises has some resin radials. They are for WW2 planes. But maybe you could dress one up likeRhone.