ORIGINAL: MTK
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....
Attempted again last night and was successful in turning the engine over with the dynatron starter and successful in starting the engine: Here's what I did:
Choked the engine and throttle to full
Ignition off
Flipped the prop by hand about 10 times until you could tell fuel was in the engine (felt much looser)
Turned ignition on and flipped by hand until I heard a pop (2 flips)
Ignition still on, throttle to just above idle, choke off; prop turned all the way back to BDC to get a running start
Bumped the starter and it immediately fired right up
COOOOOOLLLL!!
That will be my new starting procedure. We are supposed to get decent weather Sunday. I hope to get a few flights in