There seems to be a huge source of a particular ex-military drone propeller on the market. Research shows that no-one really knows what they were used on but many are in unused condition and going very cheap.
The interesting part is that it's a 44" wooden prop, the same as the original used on the Quickie, and being off a drone it was probably run by a similar engine size.
The prop is made by U. S. Propellers, Inc. of Connecticut — no, they don't have a website — and the part number is 22008. Here's a look at one:
Anyone want to try one out and let us know if it works?
Well I finally found out what that prop comes from. It's off a Northrop KD2R5 "Shelduck" Basic Training Target Drone, and is normally powered by a 95hp McCulloch 0-100-2 engine. At a launch weight of 360 lb these things will fly at 370 mph. Freow!
Here's a photo:
They were also used by the British Army in the early 60s as photographic reconaissance aircraft, and in this capacity had a launch weight of 442 lb and top speed of 201 mph.