Dreamer3000’s Weblog

RadMax Rand Cam engine

Edited 16 Nov 2017

It seems the product is now called Rad max, restructuring company etc.and testing etc.


Edited 17 May 2014

there is an investigation paper done by NASA on this engine, I will try to locate it and post it here.
there is also a forum discussion this engine, there are real life calculations on it performance.

for here he is an old news piece about it.


Here is a very small fracture mechanics Circular vane engine .

all ready underdevelopment for the US military , 6 inch by 6 inch by 6 inch 24 detonations per revolution

  • 6 inches dia.
  • 6 inches long
  • 42 hp at 7000 rpm
  • 40lbs.
  • Tested at NAVAIR PSEF Oct. 2003
  • Cylindrical rotor with integrated drive shaft
  • Axial vanes move sinusoidal
  • Cams on each end of the rotor guide the axial vanes
  • Major moving parts: rotor and 12 axial vanes
  • Symmetric design forms 24 combustion chambers


  • More powerful and fuel-efficient than current reciprocating engines, yet less expensive to maintain.


  • Only 2 moving parts, the vanes and the rotor – no pistons, valves, etc. – reducing assembly and maintenance costs.


  • Provides up to 24 power strokes per revolution. The stroke length of a reciprocating engine is approximately 3.5″, and one power stroke is generated for every two revolutions. The RadMax™ Engine has a stroke length of approximately 14″, and its unique design provides 12 power strokes per revolution.
  • Calculated at 30% volume efficiency, compared to Wankel engine’s 10% volume efficiency, compared to piston engine 7-8% volume efficiency.


  • Fully scale-able, the 42 hp diesel engine version is only 6″ in diameter by 6″ long.


  • Ethanol, Natural Gas, Propane, Diesel and even Hydrogen Fuels including mixtures.


  • High firing frequency resulting from 24 combustion per revolution virtually eliminates exhaust and intake noise.

here is the company’s website

website no longer working  http://www.regtech.com/

Search  words

Complete torque – full torque – continues torque – torque engine. Toroidal engine – Toroidal motor.
Piston less Engine  – Piston less Motor – Cam less Engine – Cam less Motor –


1 Comment »

  1. hi!
    i’m doing my science fair project on redesigning the rotary diesel engine and i was wondering if you could help me. any information or tips would be greatly appreciated.

    Comment by jacquelyn Schodlbauer — November 23, 2010 @ 6:28 am | Reply

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