Now, they appear everywhere! I saw an article in GEM that described them and Then at Coolspring's June 2006 Show, one shows up! The owner had just put it together and it wouldn't stay on the governor but it did run. Here are a couple pictures and another catalog Bill Hazzard sent me.
Enclosed crankcase, fuel tank on top, linkages are internal, half base
Nice cast in emblem, open air intake. A very unique push-pull valve actuation for both intake and exhaust and of course the simple Hvid Injector. Bonehead me didn't get a good picture of the tag but I think it's a 4hp. Notice that the head and linkages are quite a bit different and on the opposite side from the one depicted on the flyer on the previous page and the brochure below.
