I would like to come up with something for use on my (still to be built) 1/3 scale Sopwith Pup. At one point I was looking in the industrial catalogs/internet sites at pulleys, belts, etc. But I got sidetracked and never continued. It will be interesting to see what you come up with.

Just remember that due to the reduced prop speed, you will correspondingly need to use a prop with more pitch.

AV8TOR