Turnigy RotoMax 150cc Size Brushless Outrunner Motor
Upgrade your 150cc size gas engine model with the Turnigy RotoMax 150cc Brushless outrunner motor. This motor will provide clean and efficient power for your large scale aircraft without the mess and hassle of fuel.
When combined with a 14s Lipoly battery and a 250Amp ESC the RotoMax motor will supply punchy, responsive power that only an electric setup can provide.
This motor is specifically suited for carbon fiber & wooden propellers and features an IC style 6 bolt hole design. The shaft has also been tapped to suit a 5mm bolt to make fitting a spinner of your choice easy.
I used this motor in my electric paramotor. RPM was 6000 (it was about 85% of powerload), propeller - 125 cm, reduction 2.8, prop rpm 2100, current 140A, voltage 48, power about 6,7 kw. In 3 minute temperature of motor was about 96C!!!! The conclusion is this motor cant be used on its max 10kw power without additional cooling! If you want get about 4 kw or more with this motor - you need additional cooling
Thanks for these interesting measurements. I see 2 issues:
~7kW is nothing that can be expected in RC models for 3min continuously. So I think that the 10kW rating for the motor is meant for much shorter full-throttle periods. Secondly, the reduction gear with large prop causes the airflow to distribute over a much larger area. This means the cooling airflow through the motor is much slower than it were with a direct drive prop blowing much more air near the center.
Great Motor for using in my Paramotor, now i use it for driving with my Bob in the Snow :-D with 30x8 Wood Prop he generates 34kg of Thrust! Battery is a 22000mAh Tatto Milticopter Battery 12s. I think this is the best Motor for this price!