3D printed generic passenger jet engine 70mm edf electric turbine unit for RC models or even a quad!

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Run up on two 5200mAh 3s lipo's - temperature rise not so dangerous this time as on one 5200 lipo - but both the batteries and the speed controllers need cooling air... Full 'takeoff' power for one minute followed by 'cruise power'. Notice how applying full throttle causes the engines to 'spool up' - this is set on the speed controllers and gives the units the same 'feel' as the full size. Started to get hand ache holding on to up to 2kg of thrust for 15ish minutes :)