ORIGINAL: Montague
I have the 180, and on two of the normal 7ah hobby batteries in series for 24v, it will turn over my 50cc gasser (DA 50).
The standard starter will turn over my 50CC gasser ( ZDZ 50 NR ) with NO problems what-so-ever using 12v, PROVIDED I have it hooked up to a higher AMP battery, than the little one provided with the Hobbico "portable" battery kit.
I usually hook it up to a small motorcycle battery in a field box, or a 21Ah battery to start my larger planes.
I put a larger cone on the 180, and it seems to produce LESS torque than the smaller starter, when the latter is used with the standard cone...
e.g. I can turn over the Magnum 1.80 with the small starter easily.