Anyone Know This Motor ?

[Percymon]

Anyone shed any light on this motor, I bought it as new old stock at a lhs but not sure what it is, may not even be rc car related?

Black plastic end bell is stamped yokomo, as is the shaft end of the champagne/gold coloured motor case. Label around body of motor says Force 120PB and stock, special, high rev, 7.2 - 9.6v and also JP. I can see 5 sets of multiple copper wire windings inside for what it's worth.

Doesn't look like a budget motor but no idea of it's spec, age or intended use!.

[Backlash]

Google it...

http://www.rcuniverse.com/forum/m_2334776/.../tm.htm#2334776

Not exactly the same, but I guess what you have is an aircraft motor..

[Percymon]

Google it...

http://www.rcuniverse.com/forum/m_2334776/.../tm.htm#2334776

Not exactly the same, but I guess what you have is an aircraft motor..

Thanks for that - i found and read that thread before posting above; the motor i have is longer in the case (540 size n shape) than that one.

What i really need to know is the spec, or at least the number of turns - last thing i want to do is mount is and blow an ESC or rip a gearbox apart. I've tried Yokoma USA and Japan websites which have nothing similar or any historical info. I've search rc aircraft forums too without success too.

Looks like i'm going to have to open it up and see if i can find any markings as to turn number, or risk blowing an old MSC trying it !

[terry.sc]

5 pole armature identifies it as an aircraft motor. Usually they rev more but have less torque than car motors and they are designed to run at a steady speed, not stopping and starting.

If you are looking at the number of turns as a way of matching it to an ESC, the narrower winding stacks means that the wire is shorter on each pole so it draws more current compared with a 3 pole motor, but the 550 length can again means you can't compare it to a normal size motor either. As aircraft motors are designed to run at a steady speed they are usually rated by current draw or motor size, rather than the actual wind.

As for what ESC will work with it, you're just going to have to try it and see what happens.

[Percymon]

5 pole armature identifies it as an aircraft motor. Usually they rev more but have less torque than car motors and they are designed to run at a steady speed, not stopping and starting.

If you are looking at the number of turns as a way of matching it to an ESC, the narrower winding stacks means that the wire is shorter on each pole so it draws more current compared with a 3 pole motor, but the 550 length can again means you can't compare it to a normal size motor either. As aircraft motors are designed to run at a steady speed they are usually rated by current draw or motor size, rather than the actual wind.

As for what ESC will work with it, you're just going to have to try it and see what happens.

Thank you for the explanation. For what it cost it's probably not worth me risking a speed controller and sounds like it's not going to have a lot of torque