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  • 1/28/2013
This little gem just came to my attention today...


EDITED on 1/28/2013
  • 1/29/2013
6 rotors? That is just F-ing nuts dude. Plus really long haha. I wonder what it took to get all 6 working in harmony? I have heard of 3 rotors and I think one 4 rotor before...
If you talk the talk, you better crankwalk the walk.
  • 1/29/2013
Yeah, 3 Rotors are stock out of the Mazda Cosmos. There was a 26B 4 rotor on the I think 92 Le manns car 787B? Then there have been kits to make 4 rotors out of 2 2 rotor engines. Basically all that you need is a custom eccentric shaft for 6 rotors, really long bolts to hold them together and center housings. Obviously that is just the surface of custom parts, but it isn't quite as hard as you probably think!
  • 1/30/2013
I wouldn't think so. But it's the whole "Rotory" thing that makes it seem complicated. I still do not know much on how they work.
If you talk the talk, you better crankwalk the walk.
  • 2/6/2013
Sorry, I thought I responded to this. They are actually much simpler in operation than an Otto cycle engine, but you have to wrap your brain around it a bit differently. 

The standard 13B engine is a 2 rotor engine phased 180 degrees apart... if I remember correctly. Focus on just one rotor for now. Each rotor housing does the job of 3 cylinders, except there is 1 intake, 1 exhaust, 1 injector and 1 spark plug (well multiple of each, but only one location for them). So, it operates like a normal 4 stroke otto cycle engine: suck, squeeze, bang, blow... except the rotation of the rotor in the housing moves the "cylinders" of air around to meet the intake exhaust, injector and spark plug. There are no valves needed on this design as the rotor itself seals the intake and exhaust passages off. This video is a pretty good visual aid on how it works. 


EDITED on 2/17/2013 : Fixed the animation
  • 2/19/2013
Those PPRE guys are some crazy dudes lol. They put that motor in a old school mazda (Mazda RX-4) its insane lol. I havent seen it driven yet but I would like to see it. I grew up into the rotary world, my dad always had a 7 (1st-3rd gen). Now I dont know how pistons work lmao (I seriously dont). I wished I knew both.
  • 2/19/2013
Originally posted by Rx7boy
Those PPRE guys are some crazy dudes lol. They put that motor in a old school mazda (Mazda RX-4) its insane lol. I havent seen it driven yet but I would like to see it. I grew up into the rotary world, my dad always had a 7 (1st-3rd gen). Now I dont know how pistons work lmao (I seriously dont). I wished I knew both.
Ha that's awesome man. See, it's all about what you're exposed to when you grow up! Me for example, pretty much learned with model air planes. I was fascinated with prop planes and learned the basics that way. Everybody has their own story, and to be dead honest, it wasn't until probably a year ago that I "fully" understood the concept behind rotaries. It was just so foreign to me.

But RX7boy, that's what REvvolution is for! Check out this article, it has a cool animation to hone your skills smiley

  • 2/20/2013
I understand the basic concept of a rotary but not like I do with a piston driven engine. I would like to learn more for sure.
If you talk the talk, you better crankwalk the walk.
  • 2/26/2013
Originally posted by Rx7boy
Those PPRE guys are some crazy dudes lol. They put that motor in a old school mazda (Mazda RX-4) its insane lol. I havent seen it driven yet but I would like to see it. I grew up into the rotary world, my dad always had a 7 (1st-3rd gen). Now I dont know how pistons work lmao (I seriously dont). I wished I knew both.
Really? A 6 rotor engine in an extremely light RX4?? If a NA 4 rotor puts out upwards of 600hp, what does a 6 rotor put out? 800Hp? In a 2,300lb car? Insane... and you know that a company who can build a 6 rotor engine is definitely not going to let it stay NA for long...
  • 2/26/2013
Originally posted by ROCKYSDS
Ha that's awesome man. See, it's all about what you're exposed to when you grow up! Me for example, pretty much learned with model air planes. I was fascinated with prop planes and learned the basics that way. Everybody has their own story, and to be dead honest, it wasn't until probably a year ago that I "fully" understood the concept behind rotaries. It was just so foreign to me.

But RX7boy, that's what REvvolution is for! Check out this article, it has a cool animation to hone your skillsĀ smiley

That is a pretty sexy animation there wink
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