RE: Hobbico Twin Star conversion
Carlos:
The twinstar would be a hotrod with a pair of Rimfire 10s, a 4000 3S pack, and 10x6 MAS G/F counter rotating props. (45A ESCs)
You save so much weight by going to electric on a twin, that I'll bet you could get it down to 5 pounds or less RTF.
I have this same power setup on a 3 pound converted sloper (P-51) and it honks and will fly around for almost 20 minutes at reduced power settings. (I have a 2200 3S pack)