Neu 1509/1D fat motor wires
 

I just received my 1509 in the mail today and when I first looked at it, I notice the motor wires are HUGE. You can see it here: http://maxcapacitor.oplink.net/blunten/15091515.jpg . Do all 1509's come with that big of a wire? They look like 10 gauge wires and my 1515 2y has 14 gauge wires. My only guess is its a high kv motor (6900) and it draws alot of amps. If anyone has an answer to this, let me know. Also, the shaft has very little resistance when you turn it with your fingers compare to my 1515 2y. You can barely feel the dimples while its turning.

I'd have to say it depends on the wind. The wires on my 1515/1Y are larger than those on the 1515/2y pictured. Other than that, IDK. I'm with you though- those are some HUGE wires!

I would guess it depends on the wind. Lower winds pull more current so the wires need to be bigger...

Those wires are huge...:oh:

Wonder why linc hasn't said anything yet.:lol:

I was waiting for you to comment on their size. Apparently you are looking for something thick for yourself... To each their own, don't ask, don't tell.

Picture a space that needs to be filled with windings.

A lower turn count in the winding would leave that space half empty if the same number of strands were used.

To prevent copper losses and raise overall efficiency AND current handling ability, more strands of copper are used for less turns.

The wires coming out of the motor ARE the same wires used in the winding.

Otherwise, you have splices inside the motor that can/do cause problems.

the Neu motors use larger wire as the wind number goes down/kv goes up. for example, a 1.5D will have larger wire than a 2y. 10 ga is about the largest i have seen and it usually ends up on all winds 1y and faster i believe. i know all my 1.5d rated motors have 10 ga on them. but i have seen the 2.5d and 2y and others with only 12ga, maybe its even 13ga. those 1509 wires are more like 8ga though. the post above this one sounds to be accurate. the motor wires will just come from the copper wire inside the can so the more wire used, the thicker the connection. its a good thing. you want plenty of current in winds that low.

Let me clarify just a little more.

For example, here's the specs on a Scorpion HK-4020 1390kv outrunner motor.

Specifications

Stator Diameter ............................ 40.0 mm (1.575 in)
Stator Thickness ........................... 20.0 mm (0.787 in)
No. of Stator Arms ................................................ 12
No. of Magnet Poles ................................................ 8

Motor Wind ............................................. 6 Turn Delta
Motor Wire ..................... 28-Strand 0.29mm (29 AWG)

Motor Kv ........................................... 1390 RPM / Volt
No-Load Current (Io) ................. 3.45 Amps @ 10 volts
Motor Resistance (Rm) ............................. 0.007 Ohms
Max Continuous Current ............................... 90 Amps
Max Continuous Power .............................. 1890 Watts
Weight ...................................... 284 Grams (10.01 oz)
Outside Diameter .......................... 48.9 mm (1.925 in)
Shaft Diameter ............................. 4.98 mm (0.196 in)
Body Length ................................. 46.5 mm (1.831 in)
Overall Shaft Length ...................... 78.8 mm (3.102 in)

It is a 6 turn Delta wind using 28 strands of 29 AWG wire. This is the amount of wire required for maximum fill of the stator arms. The same principle applies when filling a Neu Motor winding. The arms are just reversed being an inrunner.

Now, let's look at a Scorpion HK-4020 910kv outrunner motor.

Same Motor, just a different wind.

Specifications

Stator Diameter ............................ 40.0 mm (1.575 in)
Stator Thickness ........................... 20.0 mm (0.787 in)
No. of Stator Arms ................................................ 12
No. of Magnet Poles ................................................ 8

Motor Wind ........................................... 10 Turn Delta
Motor Wire ..................... 24-Strand 0.25mm (30 AWG)

Motor Kv ............................................. 910 RPM / Volt
No-Load Current (Io) ................. 1.95 Amps @ 10 volts
Motor Resistance (Rm) ............................. 0.015 Ohms
Max Continuous Current ............................... 65 Amps
Max Continuous Power .............................. 1820 Watts
Weight ...................................... 284 Grams (10.01 oz)
Outside Diameter .......................... 48.9 mm (1.925 in)
Shaft Diameter ............................. 4.98 mm (0.196 in)
Body Length ................................. 46.5 mm (1.831 in)
Overall Shaft Length ...................... 78.8 mm (3.102 in)

This wind is a 10 turn Delta using 24 strands of 30 AWG.

Look at the differences.

KV went from 1390 to 910.
No-Load current went from 3.45amps to 1.9 amps
Resistence of the wind has changed.

Scorpion outrunners do splice super flex wire onto the winding inside the case. Neu Motors do not.

Less turns = more strands = same copper fill
More turns = fewer strands = same copper fill

This information was pulled from http://www.innov8tivedesigns.com/pro...roducts_id=388

Many thanks to Lucien. :yes: