Direct Drive to Diff E Revo Build

[sikeston34m]

Originally Posted by johnrobholmes

I switched to 5 strands of 22 awg wire. Crikey it is hard to wind tight! Took more than an hour for one phase of the motor, only 2 left. With all this work I will leave all 6 ends open so I can switch from D to Y termination on the fly. Just so happens that a 8D on 3s is almost exactly the same rpm as an 8Y on 5s (wattage should be the same too). Time to test this kv VS startup torque thing.

I've been doing some more research about this on my own.

Delta has 1.72 times the kv as Wye Termination but draws 1.72 times the amps.

Wye has 1.72 times the torque as Delta, but draws 1.72 times less amps.

SO, correct me if I'm wrong, but to make the Wye termination put out the same wattage and KV, You must use 1.72 less winds on the stator.

There are two big advantages of the Wye termination IMO.

1. More Torque! 1.72 times as much torque. I think this is mainly due to the fact that 8 magnets/poles are in use at any given time, rather than 4 magnets/poles on the Delta.

2. More EFM feedback to the ESC at lower rpm's. I just discovered this today as I was reading about this. The Wye should run/start MUCH better in a Car/Truck Application.

I'm thinking about taking a short cut to the entire winding/experimenting thing. AXI motors says "If you have a custom motor in mind, do not hesitate to contact us."

I think I'm going to ask them if they can do a custom wind for me. I want a 4130/8 with a Wye Termination. I want to shoot for 700kv and with a Wye Termination, this should be a BEAST!