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Old Oct 31, 2006, 08:22 AM
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United States, CO, Colorado Springs
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AC World Kit wind for EDF-64?

I have some kits waiting for the GWS-262
Any suggestions on what wind to start with?
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Old Oct 31, 2006, 10:31 AM
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Salt Lake City Utah
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rdeis,
What bat. are you planning on using? I"ve got two of these in edf55's in my mig 25 (5 turn NSNSNSNS wye) 16-17 amps each so this setup needs a 20c 2100 min. I think the NNSSNNSS setup may be better but I've only tested it in the E-flight 68mm fan which prob. pulls a few more amps then the edf64. The E-flight fan pulled around 19-20 amps (7 turn wye) so prob. 7-8 turn in the edf64. All my bats. are 3 cells.

I just got three more of these also, so I hope to mount one soon into a 64 for comp.

Here is a link to a bad video of the Mig using AC motors in edf55's.
http://www.rcgroups.com/forums/showthread.php?t=527899

Cheers--Stacker
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Old Oct 31, 2006, 11:12 AM
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United States, CO, Colorado Springs
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Planning on 3 cells, hadn't decided the capacity yet. I'll have to see what the thrust and amps comparisons dictate, but I was hoping to keep somewhere close to 30A because there are lots of batteries available that will pump out 30A. I eagerly await your test results. (-:

The prototype in the video was running at about 26A full throttle and performed very nicely, but I'm at high altitude and will be a little heavier.

With 7-8 turns are you suggesting multiple strands, or heavy gauge wire?
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Old Oct 31, 2006, 11:44 AM
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Salt Lake City Utah
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rdeis,
I've been using 26ga. multi strand. If you want to keep it at 30 amps you will prob. have to go with 8 turns for the NNSSNNSS setup and you might be able to fit three strands of 26ga. but I did three on my seven turn and it looked pritty full. Might also try two strands of 24ga.

On my mig setup using a TP2100 prolight both motors caused the bat. to sag just under 30 amps, I also puffed the prolight doing it. I've switched it to a 20c pack now, but the weight sucks. I think the new TP extreme packs would be nice with a twin like the 262.

You may be at a even higher altitude then me (4500) in S.L.C. and that does make it hard. I'm sure the gws video was shot at a little above sea level.

Cheers--Stacker
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Old Oct 31, 2006, 12:07 PM
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USA, PA, Pittsburgh
Joined Jul 2001
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Multiple strands are easyer to wind.
Just tested this kit in edf 55, cut rotor to 3 blades.
4 strands 30 ga wire, 7 turns,Y, NSNS magnets (4 only).
On 3s 2250 15c battery.
415 grams of thrust at first minute, 18A. After that 380 grams 15A. Could not measure the voltage under load.
Rotor is pain to balance if possible at all.
I will try 6 strands, 6 turns,Y of 30 ga wire and NSNS magnets.

GWS fans have nice but agressive aerodinamic blade design.
We might all switch to XF fan, simple efective design and quiet as reported by rcwincent.
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Old Oct 31, 2006, 12:37 PM
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We're closer to 6500. I'm going to make the nacelles easy to disassemble so I can experiment with the motors.
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Old Oct 31, 2006, 12:52 PM
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I think they need to build a model port in Death Valley since it is below sea level. Also be a nice place for us high altitude guys to go in the winter. Just have to leave before summer or all the foam would melt.

Cheers--Stacker
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