RH205 motor windings

The 9C RH205 Nine Continent rear motors exist in different windings that determine torque and speed:

Here is a small summary table of RH205 motor windings :

If you want to use the e-bike on routes with large elevation changes, favour torque.

On the other hand, you may enjoy not going too fast; in that case avoid the 10×6 or 9×7 windings!

Note that the motors accept up to 2000 watts, so you can pair them with high-voltage controllers.

The important thing will be to respect the maximum power using the famous calculation

For example, with a Power-e-bike electric bike motor kit fitted with a 60V nominal 35-amp controller and a 60V nominal battery fully charged at 67.2 V

Battery model: 60V
Nominal capacity (AH): 13AH / 15AH / 20AH
Nominal voltage (V): 60V
Cell source resistance (mΩ): <40 mΩ
Cell specification: powerful 3.7V 18650 3C cell
Cell combination: 5 series 16 parallel / 6 series 16 parallel / 8 series 16 parallel
Number of cells (series x parallel): 80/96/128 pcs
Discharge cut-off voltage (V): 48 +/- 1 V
Charge cut-off voltage (V): 67.2 V
Maximum continuous discharge current (A): 30A
Maximum instant discharge current (A): 50A
Charge mode: CC / CV
Standard charge current (A): 2A
Charge time at standard charge current: 10 hours
Maximum fast charge current (A): 5A
Charge time at fast charge current: 4 hours
Charge temperature range: 0-45 °C
Discharge temperature range: -20-65 °C

The calculation is:

67.2 * 35 * 80/100 = 1881.6 watts max

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