D verses Y winding

[sprintkat]

when u see the Y after the kv rating is that for speed
when u see the D after the kv rating is that for torque
and then what are the numbers for ex: 1y 2d is that the number of windings

[RaceMechaniX]

The Wye and Delta refer to the type of windings. Search on Wikipedia for brushless motor for an explanation.

[jj2003]

when u see the Y after the kv rating is that for speed
when u see the D after the kv rating is that for torque
and then what are the numbers for ex: 1y 2d is that the number of windings

Taken from wikipedia;

A motor with windings in delta configuration gives low torque at low rpm, but can give higher top rpm. Wye configuration gives high torque at low rpm, but not as high top rpm.
Wye winding is normally more efficient. In delta-connected windings, half voltage is applied across the windings adjacent to the undriven lead (compared to the winding directly between the driven leads), increasing resistive losses. In addition, windings can allow high-frequency parasitic electrical currents to circulate entirely within the motor. A wye-connected winding does not contain a closed loop in which parasitic currents can flow, preventing such losses.

[Fluid]

In practical terms, it is difficult to see any difference on the water. Kv is still a more important value for the average boater. One characteristic of 'Y' winds is their affinity for liking more timing advance. 'D' winds usually prefer low timing advance. Except for outrunners - where at least some 'D' winds work best with timing from 5-15 degrees. Both my recent SAW records were set with 'Y' wind motors, and high rpm was not a problem.



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[TINY]

I don't think i own a d motor as the y wind is far more suited to most fe.. As Fluid said Kv is the most important..

[6BOOST]

A lot of high speed setups around the world use Lehner motors which if I'm not mistaken are usually wired as a delta configuration, in fact as far as I am aware before they brought out their 6 wire motors you could only use them in Delta wind? Someone please correct me if I am wrong? will do some testing this year in my mono, I have 2 winds of 3080 that will both have similar KV but one in delta and one in wye wind, will let you know when I get some data.

6BOOST

[Fluid]

I don't think i own a d motor as the y wind is far more suited to most fe....

I would not go that far, a lot of FE builds use "D" motors with great success - the Neu 1521/1.5D is one such motor, as is the popular Leopard 4082/2000. Like I said above, most will never notice any difference. Choose by motor size and Kv.



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[TINY]

A lot of high speed setups around the world use Lehner motors which if I'm not mistaken are usually wired as a delta configuration, in fact as far as I am aware before they brought out their 6 wire motors you could only use them in Delta wind? Someone please correct me if I am wrong? will do some testing this year in my mono, I have 2 winds of 3080 that will both have similar KV but one in delta and one in wye wind, will let you know when I get some data.

6BOOST

Oops i do own two...lol