I'm new here, but this thread caught my eye, as it sounds like the answer to a longstanding problem since the demise of Williams Brothers (who are coming back under new ownership, but it's painfully slow).
Along with a sore need for WWI scale dummy engines, guns, wheels in 1/8, 1/6, 1/5 (my own personal need at the moment), 1/4, and 1/3, there is an absolute absence of dummy radial engines for Golden Era aircraft, e.g Stearman, Fleet, Waco, etc. It's always puzzled me why there has never been any attempt by anyone to commercially (and convincingly) model the ubiquitous Continental 225 7-cylinder radial for scale models of the venerable and increasingly popular PT-17.
As a longtime devoted Stearman lover and modeler, I have no fewer than seven Stearmans in various scales from 1/5 to 1/12--some built, some not--all needing a dummy engine more representative of the type than the quite poor vacuum formed effort most Stearman kits get. It's akin to painting a Rolls-Royce with housepaint from a brush to hang these cheesy featureless vacuum-formed engines on a well executed model.
How about considering a robust plastic or resin rendition of a Conti 225 to help us poor Stearman guys out? I fly strictly electric (the electric side of R/C is gaining ground rapidly on gas and glow), so vibration resistance is of only mild concern. Additionally, electric powerplants make mounting of dummy radials over them an order of magnitude easier and better looking than mounting over a glow engine, so electric scale models of radial-powered aircraft are booming in popularity. The single glitch is the absolute unavailability of full dummy radial engines!
My Great Planes 1/5 scale N2S-3/PT-17 model is in dire need--I am looking at having to scratch-build one, with no alternatives available. My old Sterling PT-17 kit will need a 1/6 scale radial as well.
I've written to a few commercial manufacturers of small scale dummy engines, and have been basically told they had no interest, or to go to Williams Bros. for my parts.
Obviously that's not an option. I would expect to pay a price commensurate with the quality and uniqueness of such pieces, seeing as how they are utterly unavailable now.
Just a thought...okay, a plea.
Rick