"TurboSloth" (TheTurboSloth)
08/26/2014 at 18:10 • Filed to: None
0
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"TurboSloth" (TheTurboSloth)
08/26/2014 at 18:10 • Filed to: None | 0
| 7 |
Well, I know how they work, but I see these drift car builds with 3 and 4 rotors, which got me confused. I thought cars like the RX8 and RX7 only came with an engine that had 1 rotor? Does this mean I can slap multiple engines from an RX8 and have a 4 rotor engine?
RazoE
> TurboSloth
08/26/2014 at 18:11 |
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They're the work of the devil
Tohru
> TurboSloth
08/26/2014 at 18:15 |
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The RX cars were two-rotors.
They are stackable:
Engine front - Rotor - Midplate - Rotor - back of motor.
When people make custom 4 and 6 rotor cars, they're just adding more rotors and midplates in the sandwich:
Front - R - M - R - M - R - M - R - Rear = 4-rotor.
You just need long enough bolts to put them together, and a custom "crankshaft" (called an eccentric shaft) to connect the rotors. Oh, and custom intake and exhaust manifolds.
norskracer98-ExploringTheOutback
> TurboSloth
08/26/2014 at 18:18 |
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Or you can go buy a Grand Am RX-8 because racecar.
Santiago of Escuderia Boricua
> TurboSloth
08/26/2014 at 18:18 |
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Googled 787B engine. Looks like they all share the center shaft and probably have their rotors offset in the rotation to smooth it out.
1337HPMustang
> TurboSloth
08/26/2014 at 18:27 |
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well you got these triangles, see, and if you want more power you just kinda attach more triangles and don't forget
tc_corty
> TurboSloth
08/26/2014 at 21:33 |
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12a and 13b have 2 Doritos. 20b has 3 Doritos. These are the common engines you're most likely to come across, there are a few others that I haven't listed.
A 26b is basically two 13b smashed together. Using a custom eccentric shaft (the name for a roatrys crank shaft is the easiest way to explain it). The "block" of a rotary consists of endplates and housings. So, simplified, if you take the endplates of two 13b's you can join them together using the custom eccentric shaft. And bam 26b.
In a piston engine, the piston does 4 "ups and downs" so 2 strokes, suck-squeeze-bang-blow, to do one " power cycle". In a rotary, the suck-squeeze-bang-blow, happens in one turn of the eccentric shaft.
If you look at a diagram you'll see the the housing isn't a circle but more of an oval. The housing combined with the shape of eccentric shaft, gives the places where: the triangle runs close to the intake port then thanks to the shape of housing, a gap is made that creates the vacuum to pull the air fuel mixture in "suck". Once the following point of the triangle passes the intake port, the airfuel that we talked about is now being compressed " squeeze ". Once this charge is compressed as much as it can Tue spark plug ignites the charge " bang". Thanks to the shape of the housing the expanding gasses force the Dorito to spin. As the leading edge of that "chamber" passes the exhaust port, the gasses have somewhere to go and the shape of the housing helps the rotor push all the exhaust gases out "blow". That's a pretty simple how it works for a rotary. There's other things that are in play, but that's the basics. If you search for a gif, it'll help you understand what I've written. CBF checking spelling and grammer so hopefully you'll understand haha.
Brap brap brap
samssun
> TurboSloth
08/29/2014 at 05:22 |
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RX7 and RX8 had two rotors. Cosmo had 3. In theory the housings are modular so you can stack more rotors, but in reality the eccentric shaft (basically crankshaft) becomes more complex to machine, balance, and assemble.
Here's a 2 rotor, meaning 5 "layers" (side housing, rotor 1, middle housing, rotor 2, side housing):
http://cpmcase.blogspot.com/2013/05/rx7-ro…
Here's a 3 rotor, meaning 7 layers, and the e-shaft is already getting fancy:
http://www.rx7club.com/attachments/ro…
4 rotor, custom made, 2 piece e-shaft:
