got the 18cc together and it is 3lb 1oz on mag itnition, that is everything including exhaust and prop, I believe the echo 16cc will be heavier (has a secondary coil) but will trim it down to see, and the stihl was 2 lb 10oz set up for gas/glow (mag wasn't possible with it's setup).
if the mag is too heavy, I have 4 RC EXL ignition modules on their way to me

, or just go gas/glow, I believe I'll have better luck with gas/glow on one of these smaller engines than my modified 32cc mac I tried before. I know I had a 18cc set up on gas/glow before (cylinder was shot) that was at a flat 2 lb set up on gas/glow which is lighter than an RCGF 20cc on CDI, but still a lot heavier than the RCGF 15cc (but I like the $7 price I have into this engine better than the $230 for either of the previously mentioned engines)
I'm only about 200' ASL so performance is about as good as it gets