http://www.youtube.com/watch?v=zMzt34_zOyE <http://www.youtube.com/watch?v=zMzt34_zOyE>

   Enjoy!

   -Dan G.

   Some times I think the customers understand and appreciate the
   rotary better than Mazda Corp. :)

   Paul Lamar



   I couldn't agree more! Mad Mike is one of the world's great Mazda/Rotary
   Champions, saw an interview awhile back in which he stated he'd owned
   27+ rotary powered vehicles over the years! He keeps another 4 rotor
   Rx-7 in Japan, called the JAPBUL. (the one in the linked video is the
   MADBUL) He also has a Turbo 3 rotor (812hp 20B) Rx-8 "BADBUL" (which
   I've seen IRL). I don't understand why Mazda doesn't flaunt his and
   other success like his by others, major fumble on their part.

   http://www.madmike.co.nz/

   -Dan G.


   Rotaries most great benefit is easily stackable. I think if we use better material for shaft.10 or more rotor can be stacked and still its very small
   and by just common sense if we use ceramic or inconel it can be air cooling engine. Efficiency easily go over current gasoline engine

   I think about crowed funding at kick starter or indiegogo for making this. I have no intend about get money from it just fun job. So people may interest in.

   As we know 12 rotor rotaries size is 1.5m and it will produce over 2000hp easily. Apache choppers engine just produce 1700 hp but extremely expensive. If we success I think we can supply this engine on many aircraft and marine solution

   What do you think about it paul and fellows?

   P bear

   IMHO 5 rotors in line is the limit.

   Paul Lamar




As Paul said 5 rotors are likely max stack practical. Size and weight start to be a problem especially for mobile use. It would be more efficient to make larger radius and eccentricity with 70 or 80mm rotor width. A 5 rotor engine with a firing order of 1-5-2-4-3 would not require large balance weights. An inline 6 has 1 and six at TDC at the same time.2and 5, and 3 and 4 also run together. the engine is basically balanced and runs smoothly. A V12 is basically two I6 engines combined so is even smoother. A 5 rotor fires like a V10 so should run very smooth along with strong torque. 80mm width would allow doubling the spark plugs or installing dual injectors in precombustion chambers with glow plugs to get the diesel or Jet fuel to ignite. With Paul´s ignition or the new diesel injectors that fire up to 7 or 8 times per cylinder firing could produce excellent BSFC. Depending on the eccentricity and radius dimensions chosen, 1,000 to 1,500HP is possible with lower fuel burn than a turbine with equivalent TBO´s. Fuel burn at the same power levels could be 50% to 75% of the turbine with turbo normalize and power recovery. Inconel or TiAl turbine housings to reduce weight could solve the installed weight issues. The slightly higher installed weight would be offset be lower fuel tank fill due to the reduced fuel burn rate.

Dale Davies