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Old Jan 22, 2010, 09:59 AM
5,200 Led Lighted Bike-Bob P.
**neons**'s Avatar
USA, MA, Swansea
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Thanks Mike and Kev,
I am saving these pictures for a future wind. Very helpful. It is a much better way to do it.
**Neons** Bob
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Old Jan 25, 2010, 08:31 PM
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Hi

Nice 12x6 wind , can you tell if there would be any benefit in running a higher cell count battery with this motor

That is the same Mah and just another cell
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Old Jan 25, 2010, 08:49 PM
I Love My Ember!
Arroyo Grande, CA
Joined Jun 2008
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Quote:
Originally Posted by NX-687 View Post
Nice 12x6 wind , can you tell if there would be any benefit in running a higher cell count battery with this motor

That is the same Mah and just another cell
I can't see why not.... I just ordered a 4s1000, and will tell you how it goes when I get the pack in.

I'm in the process of building a datalogger, and have a plethora of props coming in, so will be testing a LOT of configurations.
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Old Jan 25, 2010, 09:11 PM
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Hi

Quote:
Originally Posted by mikebergy View Post
I can't see why not.... I just ordered a 4s1000, and will tell you how it goes when I get the pack in.

I'm in the process of building a datalogger, and have a plethora of props coming in, so will be testing a LOT of configurations.
Sounds like what Im thinking, Im using a 4S A123 , 1100 on the DT 700, and its great , the 3S Hyperion 850 G3 is just great too very light , powerful,

I was thinking of something , maybe a CC30 HV and a 6S 850 G3 Hyperion , probably out of the question as I dont have the faintest idea of the kind of wind I would use on a high voltage motor
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Old Jan 25, 2010, 09:32 PM
I Love My Ember!
Arroyo Grande, CA
Joined Jun 2008
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You have to look at this as a performance vs. cost metric. The DT is a sub-$10 motor. A CC30 and a 6S hyperion pack do not IMO keep company with the DT. If you have that much invested in pack and controller, you probably should be using a better quality motor. A scorpion would be my selection if you wanted to custom wind a motor and use that stuff. The 4s1000 pack I ordered is a 30c Turnigy pack and weighs less than the 3s1300s I have also ordered. They are also only $11. I am unaware of how much the 6s packs weigh, but I am betting at some point that the weight of the packs will outweigh the advantages of an HV setup. Just my .02. This motor seems just about right for 2-4s. A 6s setup with a 12x6 would probably require ~ 450kV. I'd probably do around 18-20 turns 21awg or 22awg and teminate Wye and go from there.
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Old Jan 26, 2010, 01:19 AM
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Hi

Its easy to forget its such a cheap motor when it runs that good and seems to shed heat easily , I will probably stay with the ultimate in punch and lightness a 3S Hyperion G3 packs 850 Mah thru to 1200 Mah, Im working on a slightly smaller lighter tailsitter for this motor,, right on the edge of structural integrity

I actually enjoyed exploding my other tailsitter in the air, as it is also lightly built , only for the fact that it came down lightly into grass without further damage , other than snapped foam
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Old Feb 01, 2010, 04:50 AM
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Norway
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Does anyone have the Drivecalc database entry for the stock DT750 available? I'm considering using it on my plane, but will be running it stock to start with and it would be nice to get a ballpark idea of its performance on different props.
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Old Feb 01, 2010, 08:54 AM
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Originally Posted by Merlon View Post
Does anyone have the Drivecalc database entry for the stock DT750 available? I'm considering using it on my plane, but will be running it stock to start with and it would be nice to get a ballpark idea of its performance on different props.
Here is some measurements I made with my EagleTree on a stock DT750--before I re-wound it. Not sure how to actually get the database info out, but here are two snapshots showing the motor parameters that I input, and the output DriveCalc window of same. You can always re-enter the data I put in.
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Old Feb 01, 2010, 10:11 AM
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Thanks Alan, that did the trick.
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Old Feb 19, 2010, 09:02 AM
I make bad look so good.
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Would 22T 2 strands of 28awg be better than 22T 1 strand of 23awg?
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Old Feb 19, 2010, 11:31 AM
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Would 22T 2 strands of 28awg be better than 22T 1 strand of 23awg?
2 strands of 28AWG is equivalent in cross-sectional area to a single strand of 25 AWG.

So the answer is no---a single strand of 23AWG is "much" less resistive than 2 strands of 28AWG. Not quite a factor of 2 less resistance.

The motor wound with the 23AWG will give you more available torque (turns a bigger prop) at any rpm (same input voltage) than the one with 2 strands of 28AWG. Also will produce less heat (more efficiency).
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Old Feb 22, 2010, 10:33 PM
I make bad look so good.
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League City, Texas
Joined Sep 2006
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Whew! 22T of 23awg MicroDan wire dLRK delta. It ain't a pretty wind, but it's on there. Photographic evidence tomorrow. Should be around 600kv I think. I'm going to do some testing with 4S and some bigger props.
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Old Feb 23, 2010, 08:30 PM
I make bad look so good.
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League City, Texas
Joined Sep 2006
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Here it is. Not very pretty and I definitely could make it look better next time.
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Old Feb 23, 2010, 09:54 PM
Dave North
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USA, CA, San Jose
Joined Apr 2004
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Looks fine! Now for the big question: how does it run?


Dave
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Old Feb 23, 2010, 10:16 PM
I Love My Ember!
Arroyo Grande, CA
Joined Jun 2008
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Originally Posted by SteveC68 View Post
Here it is. Not very pretty and I definitely could make it look better next time.
Yours probably weighs 10-20g less than mine; lots of room for more wire in those slots
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