Introducing our Doctor Mad Thrust High-performance EDF motor series. Our Doctor has been busily working away behind the scenes to come up with this MAD series of EDF motors.......Power? - Not lacking with these!
This is 3300KV 2-4s version to suit 64mm EDF units, with a whopping 1100watt power output this 29mm inrunner is not to be sniffed at!
The Dr Mad Thrust range of EDF inrunners have been built with only one thing in mind - maximum EDF performance! They feature high-temperature stator windings, high quality bearings, are precision balanced for smooth running and are of a 4 pole design.
Over-engineered to handle the stress and strain of high performance EDF units and high 'C' rated packs. The Doctor has been hard at work to bring you a series of bullet proof, extreme performance EDF motors that are built to last.
Get a Doctor Mad Thrust power house for your EDF!
Max current: 70A
Max Power: 1100 watts
Suggested Rpm Operating Range.
High Blade Count: 43000rpm
Low Blade Count: 48000rpm
Front Mounting Hole Distance: 19mm
Shaft Diameter: 4mm
Shaft Length: 10mm
Front mount Thread Size: M3
Plug type: Bullet-Connector 3.5mm
Max Currents (A)
Length B (mm):
Can Length D(mm)
Unit Weight (g):
Total Length E(mm)
Awesome lightweight little inrunner motor. This paired with a 70mm FMS 8b rotor on a 4s 2500mah 50C lipo puts out 65A settled and over 1.6 kgs thrust. Sound is nice and whooshy too if you have it balanced. The weight of the whole combo is 190g. Not bad at all.Gran bel motore,montanto su funjet con elica 5x5 a 3s assorbe a malapena 47 ampI have a doctor mad motor for my 70 mm fan, It runs great I order 2 of these to use on a A320 plan I just finished. Can't wait to try them.Strong motor with some great powerPut it in my funjet!
See video!!!! WHOOHOO!!!!Technische Daten: 138 gramm, Wellendurchmesser 4mm, Gehusedurchmesser gemessen: 29,6mm. Verarbeitung augenscheinlich super.Hello !
Just tried this motor on a RC speed boat ! That's a very good motor for the price. As good as Leopard motors and better than 2poles motors. More powerfull because of the 4poles. And good surprise with the bearings which look very good ! The only little problem is that shaft is 4mm and not 3.17mm as said on the product's page !
I thought I gave it 5 crowns but it became just 4. No reason not to give this motor 5 crowns over all. Big bucks for the money!!! Good work HK.Hello,
I have just resently got my 3300 kV from HK and I have made some initial tests. All the dimensions exept the diameter is right, the diameter is 29,4 mm. I have modyfied a 69 mm Wemo fan house to take the motor, no problems at all. I just bought a Dremel sanding drum (nr 502) that is about 29 mm, it will expand a little when it is rotating. Very easy to get the housing exact 29,4 mm. My initial tests on the work-bench gave the following figures. 4 cells, 16,5 V gave 39 Amps and 604 Watts. 5 cells, 20,34 V gave 51,8 Amps and 962 Watts and a huge thrust from the Wemo, no significant temperature issues, but I am going to use a heatsink on the motor if I go for a 5 cell-setup. It was no problem to get a perfect balance in the fan/motor setup. I will now modify a Tomahawk Viper to take this setup and see what it will give. I will come back with the thrust figures shortly. I bought the motor alone from HK and it came out well under 200 grams, freight cost just 5 dollars to Sweden. It seems to be a fine motor to a very low price.