Originally Posted by Dennis C
Are you judging power by flight performance or with a watt meter?
It has been my understanding that gas props pull more amps but are not as effecient as electric .
Flight performance....APC props at this size are not as efficient as they could be, but to load this motor properly, you would need about a 22" Xoar wood prop. The Xoar carbon is hollow, and performs very well. I don't remember what the watts/amps were, as the first time I used this set-up was in my 74" Edge, however, with two Thunder Power 4S 45C 4400mAH packs, on a five minute flight (with no "low and slow" stuff, and lots of verticals for K.E. spins inverted flat spins etc. I still land with 35-39% left in the packs.
To give you an idea of the kind of power my plane has, I have a good friend (Norm) who flies, that has a son that likes powerful planes, and the first time he saw my Edge go up (I like to take off and go vertical)....he went "whoooaaa...that plane has some power!!!!"
Edit.... I went back to the 74" Edge thread and found what I had posted after the first run up....
Finally!!!! My Edge is ready for maiden tomorrow!! Had to buy new batteries as the ones I had (4000mAH packs) had puffed, and, I also needed more weight in the nose, so, went with new 4S 45C 4400mAH Thunder Power packs. And.... I ran up the motor today for the first time. On 8S with a Hacker A60-5S (295KV), I got 2335 watts @ 79.35 amps, using a Xoar 20X10 Carbon fiber wide "gas" prop. Some might think this low on wattage, but this is a 28 pole motor, and you can't compare input watts of a 28 pole motor to those of a 14 pole motor such as an A50-14L or a Motrolfly motor. While I didn't check the thrust with a fish scale or anything, I can tell you, when I had the stab pulling against the back of my ankles, it hurt, and I haven't even set my ESC yet!!!