7 rotors

A 3 rotor and a 4 rotor engine. The 3 rotor is an engine swap from a Mazda Cosmo. The 4 rotor was a "weekends" project.

More Videos...

6B 6 Rotor Flames
A few flames from PPRE's new 6B 6Rotor

Handbuilt 4-Rotor Engine
This was a project that took about five years of weekends to put together. There was a lot of trial and error as jury-rigged parts were improvised and revised, leaks were identified and plugged, and byzantine electrical diagrams were decoded. It still does not run smoothly, as there likely is a problem with the intake system that has prevented smooth timing at idle. But she runs! lots of people wanted to know where the E-shaft came from: it was custom ordered from a shop in New Zealand.

12 rotor rotary engine sevenstock 14 2011
Pretty stinkin' awesome! Watch it run! http://www.youtube.com/watch?v=dT8wTr27uD4 Got some info on it: http://www.rx7club.com/showthread.php?t=945021 http://www.12rotor.com "Length: 30" Width: 31" Height: 24" Weight: 830 lbs Displacement: 960 cubic inches Max Wide Open Throttle RPM: 8,500-9,000 First scheduled maintenance for boating applications: Naturally aspirated (pump gas 87 octane) 1,440 hp pleasure use at 400 hours. turbo-charged 10 lbs Boost (pump gas 87 octane) 2,400 hp poker run version at 200 hours. turbo-charged 25 lbs Boost (race fuel 110 octane) 3,600 hp race version at 30 hours. turbo-charged 50 lbs Boost (race fuel 116 octane) 5400 hp Drag race version at 11,000 rpm"

MadMike 4 Rotor FD doing donuts!!!
Here is MadMike doing some donuts at the Redbull event in Long Beach Ca...4 Rotor Rules!!