Hi,

The SM30 looks like an interesting idea as well. The weight is lower than the ZDZ 40, but the power seems to be adequate at approx. 3,5HP.

SM30 technical data taken from the web-site below:

Capacity: 30.2ccm
Power: 3,53PS @ 8500 U/min
Weight: 1145g incl. ignition
3 main crankshaft bearings
Connecting rod with 2 needle bearings
5 ported cylinder design
Rear exhaust and rear intake
Membrane pump carb (Walbro)
Props:
2 blade: 18/8 to 24/8
3 blade: 18/6 to 22/8


More info on the SM line of engines here: [link=http://www.modellexclusiv.de/]http://www.modellexclusiv.de/[/link]

Directly to the SM30: [link=http://www.modellexclusiv.de/SM_Motoren/SM30/sm30.html]http://www.modellexclusiv.de/SM_Motoren/SM30/sm30.html[/link]