Yes John, this electric stuff is a mystery to me too. There seems to be a lot of information out there for the electric stunt flier's but our carrier flying is quite different when it comes to information. Bob Frogner was the first person to write enough about it that if you read all he wrote you could go out and buy the equipment and put together a pretty decent .15 carrier plane. That's how I built my first e-15, I copied everything Bob had done (except the plane) and my e-15 plane flies quite well. Actually that's the way I've done most of my carrier plane development is copy or improve something that someone else brought to my attention. Bill Bischoff has given me at least 80% of what I know about carrier.
A little history about my journey with e-profile carrier. I started in mid 2010 building a e-109T just for electric. The AXI motors were pretty easy to get form Hobby-Lobby and I got a AXI 2826/8 (1500KV), JETI 77A ESC, U/Tronics single channel unit, Radio Shack potentiometer, and a BIG TP 4s 5000mah 30C battery (I didn't want to come up short on capacity). My high speeds were mid 22s to mid 23s and the low speed times were mid 3s to low 4s. Nothing about this combination was very striking and after a couple of months of playing with it I hung it up in the garage and consentrated on my IC planes. At contest where I competed I noticed that the e-profiles were going faster than mine ever went but they were not able to get very good low speed times because they were running out of battery (something I had not had any trouble with). So I thought I would take another shot at it.
This time I built a bigger (44") 109T and built it as light as I could (well for me anyway). I switched to a Scorpion SII 3026-1190 motor and picked up a little more high speed to the mid 20s with an occasional high 19. I really was looking for the mid 19s so was a little disappointed and then discovered the Scorpion had less KV than the AXI I had replaced. For some reason I thought the AXI was 800KV and the Scorpion at 1190 and would give me significantly more speed, well the AXI had 1500KV and the reason I did pick up a "little" speed was that the Scorpion motor was a little bigger 3026 to the AXI 2826. I was using cut down APC (IC) 10/8P props on both the AXI and Scorpion. AND, then another problem came up.
I was mounting my motors at the front or drive end and the prop at the other end. By front end I mean the end that the wires come out of (see what I know about electrics) because it made a much cleaner plane and a touch lighter. After around 20 flights with the Scorpion I spun the bearing at the prop end of the motor, so I bought another Scorpion and got it just in time for a contest I was going to. This time the bearing lasted 5 flights and I spun it again. Well I thought if this is electric carrier I want no part of it. These bearing are so small its a wonder they lasted as long as they did (I, thought). SO, I started looking around for motors with larger bearings.
Well there they were, called "Helicopter Motors". They had a bearing on the drive end of the motor that was about twice as big as the bearing at the other end. This was so the motor could run against a big reduction gear with a side load for extended periods of time, and it seemed to work for me also although I had to reverse the way I mounted my motors (not as streamlined and heavier). Scorpion had dropped the size motor I wanted so had to go to Hyperion HP-HS3026-1210KV which is made by the same people that make the Scorpion. So at this point that's what I'm using in my e-profiles, still going low 20s with an occasional high 19. I will probably try a Hyperion HP-HS3026-1400 sometime soon to see if I can get a better high speed. Next time will talk about the motor in the e-CL 2 MO-1. Eric