In my younger days, I had built a Dumas Atlas Van Lines unlimited hydro with a Cox .049TD with a Dumas flywheel and cool clamp. I built it as "free running". It could build up enough speed to ride the prop and really scoot. The needle was very hard to set, as if you set it rich enough not to lean out at top speed, it would not want to get up on step very well. If you set the needle lean enough for low end power, it would get up on step but then lean out, run hot and then sag back into partial plane. If I set it up to run wide clockwise circles with the rudder, it would run well until it came up on its prop, then tear off in a mostly straight line. I had a ton of fun with it!

I have a good stash of 049 motors and collecting my cash to send off a good order to Dumas, this time including the SK DADDLE JR and the SKEE VEE 10.