RE: What gas engine to replace an OS 1.60??
I don't understand. The ZDZ 40 weighs around 58 ounces with ignition, and muffler. Scroll down to the bottom of this page:
[link=http://www.chiefaircraft.com/cgi-bin/rcm/hazel.cgi?action=serve&item=/Models/Engines/ZDZ/ZDZ.html]Chief Aircraft[/link]
What do you mean, "flying weight with fuel"? Do you mean the weight of the whole engine package, plus the weight of the fuel?
I'll check out the 29cc. Thanks.