Calculate motor rewinding values. Optimize performance, turns, and stator configuration easily today.
Brushless DC (BLDC) motors are crucial components in modern electric vehicles, drones, and industrial automation. Modifying or rewinding the stator coils allows hobbyists and engineers to precisely tailor motor characteristics to specific voltage and torque requirements. The KV rating defines how many revolutions per minute a motor spins per volt applied with no load.
The primary calculation relies on an inverse linear relationship between the number of turns per stator tooth and the resulting KV rating. Additionally, changing the internal connection layout from Wye to Delta introduces a scaling multiplier factor equal to the square root of three.
New KV = Old KV × (Old Turns / New Turns) × Termination Factor
Input your motor's baseline parameters into the three organized columns above. Enter your current stator slot and pole counts, specify your existing turns and original KV rating, choose your wire gauge, and select your target turns with termination layout. Click the calculation button to immediately preview your updated motor performance characteristics.
Q: What happens if I decrease the number of turns?
A: Decreasing the number of turns increases the KV rating, meaning the motor will spin faster per volt but will generate less torque per amp.
Q: Can I convert a Wye motor to Delta safely?
A: Yes, converting from Wye to Delta increases the KV by roughly 1.73 times, which demands careful monitoring of thermal limits and current draw.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.