I have a small simple 6 V DC motor and I would like to rewind its rotor. The motor has 2 magnets. The rotor has 3 poles to wind. Normally each part has 169 turns of winding with 0.15 mm2 copper wire.

My intention is re-winding those coils, but I would like to know before winding how many turns and what thickness of wire I need. I want to make calculations, however, I don't know anything more than the information above.

  • \$\begingroup\$ why are you rewinding the motor? \$\endgroup\$
    – jsotola
    Nov 15, 2022 at 22:29
  • \$\begingroup\$ Are you rewinding the rotor to try to decrease inrush current? There are easier ways to go about that. \$\endgroup\$
    – vir
    Nov 15, 2022 at 23:35
  • \$\begingroup\$ Rewinding a motor and decreasing inrush current are usually two different things. When you explain why you're rewinding the motor, please don't stop at "to reduce inrush current". Please explain what you're trying to achieve with the assembly. \$\endgroup\$
    – TimWescott
    Nov 16, 2022 at 2:20
  • \$\begingroup\$ You can decrease stall current by increasing the number of turns, but it will also reduce speed and power output. Is that acceptable? \$\endgroup\$ Nov 16, 2022 at 5:06

1 Answer 1


Rather than rewinding the motor, consider using a current limiter. This can be constructed from two transistors and two resistors.

More here: Help dimensioning resistors in a two NPN transistor current limiter circuit


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.