[doc0455]

Here a a video of my 6 cycle engine I built about 7 or 8 years ago. I put a smaller base under it today and spent some time playing with it.
[nomedia="http://www.youtube.com/watch?v=o6PJ2jZyoyc"]YouTube - 6-Cycle Hit miss engine[/nomedia]

[Ken_Shea]

Sounds real good, I liked the thumpy sound.

What is the 6 cycle referring to beyond the normal 4?

[doc0455]

It has extra exhaust cycles suppose to be more efficient and run cooler.

[Ken McKenzie]

Yes it is the wankle engine it is a word and not a name.
The Wankel engine consists of a rotary piston with interior gears that are in a three to two ratio for example the rotor has 30 gear teeth and the stationary gear has 20 teeth. The old Mazda engines had 2X17=34 stationary gear teeth and 3X17=51 interior ring gear teeth. In one revolution of the e-shaft the rotor is held stationary two thirds of a revolution therefore it advances one third.

The wankle engine is different it's gear ratio is different. It has a 32 tooth stationary gear and a 24 inch spur gear attached to the rotor. In one clockwise revolution of the e-shaft turns the rotor 1/3 revolution counter clock wise. The combustion at top dead center creates energy like a bullet out of a rifle.
It is a fact of life little known that energy is created by creating an imbalance.

It is probable that the gear ratio can also be 24 to 40 with double the e-shaft throw.

Any interest I have plans and the gears.

[jwolin]

I'd love to see this entered in the cncmentor.com build log competition....impressive!