Try not to laugh but...

[Skullcracken]

What do the suffixes stand for on motor types: Y and D? Also what does the length on the motors effect, ie - 4074 leopard vs 4082? More torque?

[m4a1usr]

Questions are how your going to get the answers to aid you in learning. No one is born all knowing. So dont fret about asking something to bring about your knowledge.

Motor length is not so much about increased torque as it becomes longer rather as much as its about rotor mass. If you take 2 motors of equal kv. Electrically they are basically equal (not really but do so at first glance). Both at measured voltage and current will produce the same amount of RPM's. However when you do the math using rotational energy based upon shear material quantity, a larger rotating mass will have a greater energy potential. Its basic physics. So a shorter motor with a larger rotating mass can produce as much torque as a longer motor with a smaller mass rotor.

The formula is P (HP) equals RPM times torque (Ft Lbs) over 5252.

D and Y motors are types of motor windings based up relation to construction. Instead of spending lots of print to explain them electrically it would be better if you read about them to know their physical differences. Try this: http://en.wikipedia.org/wiki/Brushle...electric_motor

The short answer is, "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."

Dont know if that answers your question?

John

[JCAustralia]

Life and FE are constant learning......

Thanks for those useful info