d wind verses y wind on electric motors

[sprintkat]

wazup

whats the difference between the y winding and the d winding of an electric motor. isnt one for torque and the other for more rpm's ???

[ozzie-crawl]

Been awhile but from memory say you have a 1515 1y 2200kv a 1 delta would have roughly 1.73 times the kv
So 3800 but would have 1.73 times less torque.
Just had a look a 1d is 4100kv so it maybe 1.9 times more. Memory must be faiding

[Heaving Earth]

Uhhhh... Ozzie, you confused me.
I believe that d wind are designed to have the same amount of speed and torque in Both directions, mainly best for robotics that perform repetitive tasks.
Y wind are designed to have more speed and power in one direction vs both.
That's the most simple explanation I can think of... Of course I'm not 100% I'm accurate, so don't quote me on those. Just throwing it out there

[ozzie-crawl]

Like i said it was from memory so it is highly possable i am wrong lol.

[ozzie-crawl]

If you look at a specific wind you will notice a Delta wind has some thing like 1.7-1.9 times more kv than a wye wind
Maybe i am thinking of some thing else tho.

From Reddywatts a few years back explains it a lot better than i did. http://forums.offshoreelectrics.com/...2-Delta-or-Wye

[keithbradley]

Ozzie is right about the kv:

(D) / (square root of 3) = Y

They don't always come out perfectly that way in actual testing, but that is the formula.

[Heaving Earth]

Ok, so what's the purpose of making d and y types?

[Fluid]

The search function is your friend. Instead of waiting for an answer he didn't get, the OP could have spent 15 seconds on a search for "wind".

http://forums.offshoreelectrics.com/...highlight=wind

http://forums.offshoreelectrics.com/...highlight=wind

http://forums.offshoreelectrics.com/...highlight=wind

http://forums.offshoreelectrics.com/...highlight=wind



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[keithbradley]

I'd worry more about the motor size and Kv than the type of wind. The main thing you'll notice is you will have different timing advances for each type.



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Jay posted this in one of the threads he linked. I think it was probably the purest statement in the thread.
You can undoubtedly go fast and run efficiently with both wind types if the rest fo the setup is where it needs to be.

I find that High kv Y winds are a little more ESC friendly (compatible) than high kv D winds. Other than that, I say just get the appropriate kv, and run the appropriate timing. The rest of your setup will dictate whether or not you get the results you want.