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Helijet
09-01-2005, 07:17 AM
My first elec. conversion. Here are the stats:

Right Flyer 40T
6.2 lbs
Wing Area: 736 Sq. In.
Wing Span: 64 in.
AXI 2826/12
CC 60
5S2P 4000 mAh
Ground tests show 582 watts, with APC 12 x 8 prop
600 watts with APC 13 x 6.5E prop

My concerns: Too much battery? LiPoly weighs 25 oz. Would a 4S or 2S suit me better? It does give a good cg.
CG: I am pushing 3.5 inches from wing LE, but manual says 3 inches with no range given. maybe not a problem.
So what kind of performance can i expect?

Sometime in the next few days I will test fly and report my results. Comments and suggestions welcome.
1139

Helijet
09-02-2005, 12:16 AM
:) It flew! Good, reasonable power. Quiet and smooth. I will have to shift my cg aft a little. In building I moved the servo tray forward thinking my cg would be too far aft. Now, in hindsight I should have kept the servo tray at the designed location. Good climbout and throttle response. Motor and battery were cool after each flight lasting about 5 to minutes each.

Mike Parsons
09-02-2005, 12:42 AM
Congratulations Helijet! I am guestimating about 32 amps with that setup? You could run a 4S on that setup and swing a larger prop for about the same wattage. It would lighten you up a bit, however if you are already batteling CG, I wouldnt worry about it.

Helijet
09-03-2005, 06:08 AM
My mistake, I meant to say the battery is a 4S2P 4000 mAh lipo.
I got 38 amps with the watt meter.

joe84780
09-03-2005, 06:56 AM
Is that the max flight time on that sertup? 5 minutes? What kind of throttle management were you using? What is your longest flight?

Thanks

Helijet
09-03-2005, 03:40 PM
No the max flight time is estimated to be 20 to 30 minutes with this 4S2P pack. We shall see after a couple of full charge cycles. I limited myself to 5 to 8 minute flights on the first three flights to adjust the trim. I plan to move the battery closer to the cg for better trim. It is a great flyer and I am extremely pleased with the power setup.