Videos
Following videos show various experiments that have been conducted and projects captured in different stages of development.
Pulse jet model rocket
Part 1. Investigative tests made to find out the feasibility of the pulse jet model rocket concept. Current design and recovery system tests at the end of the film.
Part 2.
Thrust tests prior to first flight.
Part 3. First pulse jet rocket flight ever!?
High temperature composite pulse jets
Read more about the high temperature composite pulse jets »
High temperature composite pulse jets.
Electric skateboard
Electric skateboard summer build.
Styrofoam boat
Read more about this project »
First tests with electric motor.
First tests with 4hp outboard motor.
First tests with 4hp outboard motor.
First tests with 8hp electric motor.
Model rocket engine experiments
HHO, steam and pulse jet engine tests.
Electric motor
Read more about the electric motor »
Electric motorcycle maximum power test with 11 Thundersky 90Ah cells.
Experimental sensorless version of the electric motor.
In this clip it is powered by 7x HobbyCity super simple 100A 24V ESC.
This video shows the significantly more powerful version of the kick bike motor, about 500W.
If you are interested in building this motor, you can buy a non-edited step-by-step building instruction on Payloadz » ($4,99)
The 7x120A ESC setup needs help to find the direction of rotation, therefore a start motor and a free-wheel sprocket is added. The start motor is controlled by a left side throttle handle and controls speeds up to 5-6km/h. The right hand throttle handle which controls the 7x120A ESC can be used at speeds above 3-4km/h.
Experimental high efficiency and high power motor. 840 parallel 0.05 mm strands, 3.9 m each. It was a bit tricky to wind the coils, the photos in the video gives you a clue on one way to do it. 3.5 m Ohm phase resistance. Kelly controller on left (hall sensor) throttle handle, and 6x 180 A peak Hobbywing R/C ESC on the right (Magura 5 k Ohm potentiometer) throttle handle. Kelly controller acts as starter motor.
In the first part of the video you can se the permanent magnets position versus the electromagnet coils.
The second half of the film reveals some of the problems you will face if you chose to perform dynamic test with a propeller and at the same time wish to document the test with a video camera.
This all wooden go-cart was built as a platform for joyful testing of a smaller version of the DIY 3 phase brushless axial flux motor. This version is built with water cooling in mind. However, the motor is not breaking any sweat, so it is run without water. The 90A R/C ESC could use some cooling though.
This all wooden kick bike was built as a platform for joyful testing of a simple 1 phase on/off brushless motor. The motor in this build have rotors with 2 mm thin magnets. The torque and overall power is very limited at 12 V since F=BIL, and the B is very low with these thin magnets. The power is in the 100-150W range.
Lights and lamps
On the subject “hovering light sources” several experiments was conducted and models built. This video shows photos and a video clip of the often quite entertaining results.
Lamp with heat driven propeller.
Very thin and flexible LED-light source.
EDF afterburner
Download a free instruction for the EFD afterburner »
Experimental work and final result on the EDF afterburner project.
Air BB machine gun
Read more about the air BB machine gun »
Recreational target shooting.
Shooting over water.
Simple compressed air BB machine gun.