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sikeston34m
RC-Monster Brushless
 
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Progress! - 12.09.2007, 05:54 PM

I've been making some progress winding the 3530 stator. This one will fit in the E maxx, so that is the platform I'll be testing it on.

Factory wind was 20 strands of 28Ga. at 5 turns. This yielded the following specs:

715Kv
Max Voltage: 30 volts (8S Lipo)
Max Amps for 20 seconds: 55 amps
Max Continous Watts: 1000 watts
Efficiency: 85%

In motor winding, the awg of the wire versus it's max. Amp rating tells that it is REALLY being pushed hard.

In the factory winding, 20 strands of 28 awg are rated to carry 28 amps even though the motor is given a 55 amp Burst Rating. See? This cuts efficiency and generates heat.

I am just dying to know how wye versus Delta Terminations perform. I know how the Delta performs. I've got a good taste of that. So with this wind, I'm working with 22awg wire. 3 Turns with 7 strands with a Wye Termination.

On my winding, 7 strands of 22awg is rated to carry 49 amps. In Factory spec comparison, this translates into right at 100amp Burst rating. Since amp rating are based on resistence, I feel good about this wind.

Here's what it looks like so far.



Yep, I'm using the Broom stick trick. I first lay out all 7 strands, tape one end, then I roll them up on the broomstick EXACTLY parallel, the way I want them to lay in the winding.

It really helps to pull the wires and make a nice neat radius to make the turn with.

As you can see, I've removed the bearings, installed a bolt with a couple of washers. I also numbered the poles so I can be SURE that I wind according to the DLRK diagram.

I clamp the bolt in a vise, wind a pole, then turn the stator for a fresh grip on the bolt.
   
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