ORIGINAL: RickAvery

Hi Wingspam,
I have a Hangar-9 P-40 & a Spitfire Both 60e size that I built up as electrics. The P-40 weighs in at just under 9lbs. and the Spitty is 10.75lbs. They both share the same power system. E-Flite Power 60 motors, CC P-80 amp ESCs on 6s, 5000mah Lipos. The P-40 has an APC, 15.75 X 13 3 blade prop that I cut down to ~14.75'' in dia. The Spitty has the same APC prop not cut down. The P-40 is noticably faster, but at 2lbs less, you would think so, although, I think the smaller prop is getting me higher RPMs & prop speed & is helping the performance. Not that the Spitty is a slouch. There was a club mate at the field a few weeks back with the same Spitfire using a fuel motor of some type and it was clear that the e-powered model of mine performed much better. The draw back is 5 to 7 min. flights vs. his 12+ min. Good luck.