Otto 4- stroke engine
Drukgestuurde 2-takt "Sabine"
Pressure contr. 2- stroke "Sabine"
Linford 2-stroke "Hanneke"
Scuderi split cylinder engine
Hit&Miss 2-stroke "Gijs"
Ridders- 4-takt roterende klep
Ridders- 4- stroke rotary valve
2-cil.- 4takt / 2cyl.- 4stroke
Ridders Opposed piston 4-stroke
Ridders Glass Twin 4-stroke MK1
1-cil. glas 4-takt MK1 & MK2
1-cyl. glass 4-stroke MK1 & MK2
Hybrid 2-/4-stroke glass cylinder
Atkinson MK1 (pusher version)
Atkinson MK2 "Wouter
Atkinson MK3 rotary valve
Dual 2-stroke
2-stroke Sabine MK2
Pendulum 2-stroke
Petrol Vapour Carburator
Spice jar Carburator
"Blokker" mini ingnition system
Tube glass cutter
Spark tester
Make cog wheel for timing belt
Self made spark plug
Contactless tachometer