Electric motor Rotex RET30

I am selling a used RET30 motor from a Czech manufacturer, weighing 4 kg, with a diameter of 162 mm and a depth of approx. 45 mm. Voltage DC 63 V, 3000 RPM (can be adjusted with a regulator), at these speeds the motor drove a propeller with a diameter of 1070 mm, generating a thrust of approx. 50 kg. The motor can be supplied with a Czech-made MGM COMPRO regulator, a 63V/81Ah battery (approx. 5 years old, max. 50 cycles) and a battery charger. Can also be sold separately.