B
BobG
- Jan 1, 1970
- 0
If I have 2 12v motors, each 1 inch in diam, one with 3 poles, one with
5 (or 7) poles, which has more torque? more rpm? Whtas the rule of
thumb?
5 (or 7) poles, which has more torque? more rpm? Whtas the rule of
thumb?
BobG said:If I have 2 12v motors, each 1 inch in diam, one with 3 poles, one with
5 (or 7) poles, which has more torque? more rpm? Whtas the rule of
thumb?
BobG said:So they cant be designed top down, because there is no public source of
tradeoffs. Kind of like David Copperfield's magic tricks?
The laws of proportionality I gave you apply all at once. IfBobG said:I figured someone would have a 'design tradeoff' rule of thumb. In the
given example, 3 pole vs 5 pole, everything else (turns, wire size)
equal, what measures different? L is the same, R is the same, B is the
same. Only thing I can see is that the poles are energized fewer usec
at the same rpm, so it has less time to charge up, so it has less
torque, less rpm? What do you think John?
BobG said:OK, I read it. Thanks for the link. I notice it doesnt mention a thing
about number of poles, and neither did you. Will the 3 pole or 5 pole
motor have more torque, everything else equal? How about rpm?
BobG said:OK, so a mabuchi motor with 2 magnets is '1 pole'
, and the 3 coil and 5
coil armatures, if wound the same, have same torque and rpm. I'll be
darned.
If I have 2 12v motors, each 1 inch in diam, one with 3 poles, one with
5 (or 7) poles, which has more torque? more rpm? Whtas the rule of
thumb?