Question regarding wind designation on Leopard Motor black can vs. red can

[tlandauer]

I had a Leopard 4074/2000kv Black can motor bought as a combo here ( RTI-Ready To Install w/ ESC) , current stock is all Red and the wind is "2.5y", anybody know or remember the discontinued Black can's wind? was it "Y" or "D"?
Thanks!

[NativePaul]

If the Pole count, Motor size and KV are the same then the winding will be the same (for a given manufacturer, variances between manufactures will change things a little, for example better magnets or smaller airgaps will lower KV)

[tlandauer]

I got royally confused for two years because I run a 4082/2000kv "D" motor in my MHZ Lizard Xtreme and thought my 4074/2000kv is a "D" as well. I lowered the timing in my Popeye thinking that it is a "D" motor. I went to Leopard's site but the black can is no longer in production and current 4074/2000 is a "Y" wind---just like the ones sold here. I will assume mine is "Y" as well.
Next time will raise timing to 15* and see what happens...
I think you are absolutely right, the windings have not been changed, same 4 pole motor , just different color and now the boat motors have open slots in the end bell plates.

[martin]

Leopard Hobby technical told me a couple of years back that the 40 series boat motors had different magnets in them than the 40 series car motors,i was told this was to produce more torque for boat use. If you look @ the specs for the 4074 motors & the 4082 boat motors the max amps is higher than the car motors.

[tlandauer]

So you are saying the black can motor could be car motor?
Thanks

[martin]

I was told by Leopard that these differences re magnets only apply to 40 series motors, all other size leopard motors are the same internally. And yes the boat motors have slotted end caps with the wires coming straight out of the end cap, car motors have solid end caps with the wires coming out the side of the can.

[ezhitz]

What's funny is there is a difference between the older black one and the red one. Tried my sons black 2000kv motor in my DF29 boat was quick and the motor would come back stone cold. I bought a new red version ran same setup and the boat was not as quick and motor runs warmer. My son said when he bought his the specs watt rating was higher then for the new red ones.

[tlandauer]

I was told by Leopard that these differences re magnets only apply to 40 series motors, all other size leopard motors are the same internally. And yes the boat motors have slotted end caps with the wires coming straight out of the end cap, car motors have solid end caps with the wires coming out the side of the can.

The black can i bought here more than two years ago has the wires come out straight from the back, although the end caps are closed.

What's funny is there is a difference between the older black one and the red one. Tried my sons black 2000kv motor in my DF29 boat was quick and the motor would come back stone cold. I bought a new red version ran same setup and the boat was not as quick and motor runs warmer. My son said when he bought his the specs watt rating was higher then for the new red ones.

Mine is a nice one, the cogging is notchy, indicating good magnet strength.
I also had a Gold can from Fine Design that has the same cogging, but it is a 4082/2200kv.
Those two almost feel like a 6-pole motor, i.e., the Proboat 6-pole is extremely difficult to turn the shaft by hand.
The red cans have a more "Neu" feel, when you turn the shaft it feels easier, I don't know the difference in speed but I have had no issues with them either.

[ezhitz]

The black one I have wires come out to the side.

[Fluid]

Mine is a nice one, the cogging is notchy, indicating good magnet strength.
I also had a Gold can from Fine Design that has the same cogging, but it is a 4082/2200kv. Those two almost feel like a 6-pole motor, i.e., the Proboat 6-pole is extremely difficult to turn the shaft by hand.
The red cans have a more "Neu" feel, when you turn the shaft it feels easier...

Not accurate. Clogging is not an automatic indication of "good magnet strength". Neu changed the skew of the stator on some of their motors some time ago which dramatically reduced the clogging feel, yet the motors were identical in performance. Clogging by itself can be meaningless.....



.

[tlandauer]

Not accurate. Clogging is not an automatic indication of "good magnet strength". Neu changed the skew of the stator on some of their motors some time ago which dramatically reduced the clogging feel, yet the motors were identical in performance. Clogging by itself can be meaningless.....


.

Thank you !
As always, I can learn so much here!