Not being able to buy smaller OS motors anymore, I gave ASP a try. Unfortunately they only come in RC versions. Now I know I could just wire the throttle open and it would work, but I wanted a CL style motor. So I asked about using nylon spacers here on Open Forum and found that I could. So I got a nylon spacer from local hardware store. An inch long, half inch in diameter and a quarter inch hole through the middle. Not having a lathe, I used my Dremel with a Christmas tree burr and shaped a venturi shape the best! Could at the top and a double D shape at the bottom like the RC carb. Then I drilled a hole to accept a spray nozzle from an OS40 LA. This hole is just above the crankcase. Wrapped a piece of tape around the bottom of the venturi and put the O ring from the RC carb on it then clamped it in place. Next I used a tongue muffler from RSM that fits an OS 40 motor, direct bolt on. I next mounted the motor on a board with a 8X6 Top flight prop, some 10 22 fuel ,primed it and she started in 4 flips
Next run she started in 1 flip. I ran a few more tanks through her then changed to an APC 10X 3 prop. A little fiddling and I got her to start 5 times in a row with one flip! So I bolted on my little plane simular to Phil C's Plugger and flew her yesterday. I haven't been able to fly in 2 years so Doss Porter talked me into test fly it with the promise that if I got to dizzy he would take over. Well we launched her set slightly lean and boy did she fly fast! Pretty soon I was dizzy dispite spotting every lap so Doss took over! And I fell down, lol! But any way I'm pretty impessed with my $48 motor from Hobby King!