Stumax Aircraft - SM110-47 EDF System

SM120-47 & SM120-56 EDF System

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The SM120-47 and SM120-56 EDF Systems feature a new 11 blade rotor which is designed for both lightness and aerodynamic efficiency. The SM120-47 has a 7 bladed carbon fibre stator assembly and a CNC machined motor tube which is designed for 40mm diameter motors, specifically the TP Power 4070 series. The SM120-56 has a 9 bladed carbon fibre stator assembly and is designed for 56mm diameter motors, specifically the TP Power 5660 & 5670 series. LLonger TP Power 56mm motors can be used for extremely high power levels up to 10kW. The rotor design has narrower blades than what would normally be expected, which allows cooler motor temperatures due to less torque demand than all other 120mm EDF units. The shroud is hand made solid carbon fibre. The carbon fibre stator assembly is bonded to the motor tube and shroud with aerospace grade methyl-methacrylate adhesive to ensure structural integrity even at high motor temperatures.

Note: there is no carbon fibre tailcone/fairing available nor do we recommend you use one as the motor runs cooler without it.

Note that the performance figures below are for HET motors, plug and play units are now fitted with the equivalent TP Power motor. Figures for TP Power motors will become available in the near future.

Performance:

HET 700-98-780kV motor: 12S 5000mAh lipos: 6000-6500W

Note that these figures are taken on a test stand with a radiussed inlet lip and open exhaust. Your figures will be close but not exactly the same as a lot depends on the voltage your lipos deliver under load, the air temperature, humidity, altitude as well as inlet duct design and exhaust duct diameter