What does the # of turns on a motor mean?

[holeshotkid]

I am new to r/c and I was wondering what motor companies mean when they tell you how many turns a motor is. What does this mean and how does this affect performence?

[rcguy2477]

Turns is the number of times that the wire is wraped around each segment of the armature(the thing inside the motor that spins). This effects how fast the motor accelerates, its rpm and effeciency. The lower the turn, the faster it will be, but it will require more maintance and will use the battery up quicker.

[Prelude14WRX]

Its how many copper wires are wrapped around the armature. The fewer there are, the faster the motor is.

[holeshotkid]

one more question, what does "550 motor" mean and how does his affect performance?

[evaderstman]

550 stands for the can size i think but i could be wrong since i am a nitro guy

[StevePond]

A 550 motor is just a little longer than a standard motor. It doesn't rev as high as standard motor with the same number of turns, but it will have more torque.

[rcguy2477]

A 550 motor is just a little longer than a standard motor. It doesn't rev as high as standard motor with the same number of turns, but it will have more torque.


I could be wrong, but arnt these motors slower because of their higher number of turns? A guy from my track spoke of building some 10t 550's to put in a emaxx that ended up being very powerful and allowed him to do endless wheelies.

[ElectricThunder]

550 motors aren't as fast cause their armatures are longer, so they generate more torque. A 10 turn 550 size motor is probably not as fast as a 10 turn 540 size motor, but the 550 size motor will have greater torque. The 540 size motor will rev higher. It's a trade off.

[esc crazy]

Lower number of turns means less wire being used which gives lower resistance which equals more power. The number of strands used are equally important as well. A single will have the most torque, but not as much top end. A double will have a little less torque, but a little more top end and so on. This is an important factor when choosing the proper motor for your application. The turn limit is also important when choosing an ESC. The rating given by most manufacturers is how much current the ESC can handle for a continuous period of time. Most newer ESC's ratings are for 6 cells. Hope this helps!

[holeshotkid]

Thank you