We have just received a new model of Graupner Motors in 10.5 and 13.5 Turn variants. The reason for mentioning these motors is the build quality and extremely high strength rotors.
Most brushless rotors have a magnet strength between 1100 and 1300 gauss. However we have seen rotor strengths of up to 1600 gauss in recent GM Motors.
But 2 new Graupner motors have just arrived. The rotors in these brushless motors have a strength of 1800 gauss. The strength is so high that most people cannot turn the shafts of these motors. If you remember how strong some of the brushed motor magnets were then these are the same!. Incredible strength giving amazing braking power, when you slam the stick back. The quality is also very nice. Thick alloy can with quality material and soldering inside.
We have also tested these on a rev counter on the bench and give the same RPM figures of the lower gauss motors. Usually you will see a drop in RPM with the higher strength rotors but higher torque. These have everything.
Bottom line is that this kind of motor should develop high levels of torque, braking power and good speed.
Both variants are listed below.
Thanks for reading.