ORIGINAL: choihjin
Thanks Matt;
Menz 18x12 wooden prop caused too much shake on my soft mount. Menz 19x10 was good to start engine easily, but rotated just 6800 rpm only. I think carbon fiber prop 19x10 will rotate faster. Two sources for carbon prop searched by google are Australia and France. I will contact to you.
I got to use the dynatron starter on the OS33GT. Well, guess what? The dynatron doesn't have enough guts to spool the 33GT up. Spool it up, hell, it doesn't even turn it over, on fully charged 6S lipo, 25 Volts.
But it turns the Mintor 38 with no problem. The OS has tremendous compression quite likely higher compression ratio than the other 30cc offerings, to be able to put out the power it does. In addition the Bore to Stroke ratio is far more advantageous compared to other 30cc engines. OS did many things right on the engine but did not make it user friendly, at least not yet, early in the learning curve....