14-6 scimitar. http://www3.towerhobbies.com/cgi-bin/wt ... LXNGU4&P=7
don't confuse rpm with useable thrust. prop it in the 9500 range.
the 80's a good runner. less power thasn the 72 from the several I've flown on other peoples junk.
my 72 turns like 9500-9800 on a 13-6 scimitar. yanks my 4 lb. stuff all over the place, and they are cheap since the 82's popular now.
I've had a couple 82's, sold them. great power, shakers though. and that was before the 14-6 scimitar came out, I couldn't find a prop I liked. too many rpm for me on 13-6, tried several 14" props, wasn't satisfied.
This rice paper is the test. Fragile as the wings of the dragonfly, clinging as the cocoon of the silk worm. When you can walk its length and leave no trace, You will have learned.