Imagine an S5000

Discussion in '2000 Honda S2000' started by biturbonite, Oct 12, 2003.

  1. Re: Imagine an S5000

    LOL <A BORDER="0" HREF=""><IMG BORDER="0" SRC=""></A>

    Either I misunderstand what you're saying, or you're saying it would have 8 rotary engines with a grand total of 24 "chambers" or the equivalent of 24 cylinders, I dunno how it would all fit under the hood, but it would amount to a LOT of power!
  2. Re: Imagine an S5000

    Now you've got me all confused LOL. It's one engine, but there are 8 main chambers all stacked (well if you put it on it's end) inline. by main chamber I mean the housing for the piston (well the triangular thing, I can't remember it's name right now)

    I also was trying to do research on this earlier today and found out that engine shop went out of business. Owner died of a heart attack.

    I will see if I can find a picture of this set up... if not I'll draw it as best I can.
  3. Re: Imagine an S5000

    Ok, there's no piston in a rotary engine.

    There's one large engine casing, inside it is shaped like an oval (with indented sides, kind of like this: )( ). The rotor inside is triangular shaped, and it moves up and down as it spins (vertically, clockwise), at any given moment, there are three smaller closed "chambers" formed by the points of the triangular shaped rotor, as each point is touching the inside of the casing, as the rotor spins, one enclosed "chamber" is filling up with oxygen and fuel, another is combusting, and the third is venting spent exhaust gases through a valve, which is sealed off from the rest of the engine, and only has access to the "exhaust" chamber. The three chambers alternate phases one-by one as the rotor spins. The force of each combustion is what causes the rotor to spin.

    This is just one engine (or casing), with exactly 3 small chambers within one large "chamber" (the inside of the engine casing, the oval part)divided by the rotor, there are no more and no less than 3 smaller chambers.

    To have more than 3 chambers, another engine needs to be added, creating two separate casings (manipulating one driveshaft, so they have to work in unison), each containing 3 chambers, for a total of 6 chambers (no more, no less). Most rotary engines are referred to as one engine, but are really made up of two rotary engines (casings). Some, however, come with three engines (casings) working in unison on the same driveshaft (creating a total of 9 rotors, in 3 separate casings that are attached together, and packaged as one engine, even though technically speaking it is three). I'm not sure, but I think the highest performance version of the Rx-7 came with 4 casings working in unison, attached as one engine (with a grand total of 12 smaller chambers with all 4 casings added up), and it was twin turbocharged. I'm not sure, but I think the one with 4 casings working as one engine was a racing version, and produced around 500hp.

    That's why I say it would be unlikely that they would have 8, as with the 4 casings packaged as one engine, side-by-side, they spanned the entire width of the engine bay, so with 8 there would have to be an additional 4 in a second row behind the first 4, with the two rows (8 casings) there would be a grand total of 24 smaller chambers, producing tremendous amounts of power, but allowing for little room for anything other than the massive (8 engined/casing) engine.

    I have a pretty good understanding of how rotaries work (they're nothing special, just a little unique), but I'm not very good at explaining it. I think I still have a Sport Compact Car magazine kicking around somewhere that has an article describing how a rotary engine functions, with diagrams clearly illustrating how the engine works. If I can find that magazine when I go home next, I'll try to scan it for you.
  4. Re: Imagine an S5000

    I know those engines that shop was building were never intended for compact cars, they were built pretty much to be crammed into old muscle cars for racing (only thing that had enough room)... and yes, old muscle cars can go around a track... quite well when properly tuned. I know a guy locally who owns an alignment shop and he has a fastback mustang that is completely built for racing, and that thing can outhandle a porche... of course he's put so much money into this mustang that he probably could have bought a porche... but that wouldn't be the same.
  5. Re: Imagine an S5000

    But you still have the issue of the Chassis, no matter what modifications you make, the Chassis will still have its handling limitations, due to weight distribution (it's quite high up on most musclecars).

    So, yes, you can improve the handling on Musclecars, and even make them handle really well, but they'll still have lower limits than a lot of todays cars.
  6. Re: Imagine an S5000

    yeah, I won't deny that, but they can get up to levels to compete quite well. This guys mustang is not street legal in any way, he tows it to every race, and he's gotta run it on 110 octane. And he's lowered it a lot, it has almost no ground clearance.
  7. Re: Imagine an S5000

    Yeah, not much of a surprise.

    Sounds sweet though.
  8. Re: Imagine an S5000

    i rather imagine a Nissan Skyline GTR R-40, or mayb R-50
  9. #34 Road Racer, Feb 8, 2004
    Last edited by a moderator: Apr 25, 2016
    Re: Imagine an S5000

    I don't think you really knew how a rotary works when you wrote this. You are talking about cylinders? There are no cylinders or cylinder heads. You're second description was most accurate. Any way, Mazda won the 1991 Le Mans race with the 787 race car. It has 4 rotary motors in-line.

    It would also be possible to have 6 chambers in a rotary, if it had 2 combustion cycles.$Mazda@$787Bg.html
  10. Re: Imagine an S5000

    I know there are no cylinders or cylinder heads, I was speaking of the rotary's equivalent to cylinders and cylinder heads, and I was thinking of the same thing both times, I was just trying to think of the best way to describe it.

    Is it possible to have 2 combustion cycles in a rotary?
  11. Re: Imagine an S5000

    Oh I guess I misunderstood what you said.

    So, I've never seen a 6 chamber rotary engine before, but I think it would work. It would be cool to try it.

    I don't know why rotary engines aren't more popular. Having 240 hp for 1,300 cc is really amazing if you think about it. I think that almost all cars should have it.
  12. Re: Imagine an S5000

    Well, actually, I think I wasn't doing a very good job of describing what I meant at the time, so yeah, I think you misunderstood me as well, but it was my fault.

    That would be pretty cool (if it is possible), but how do you think it would work? I have absolutely no idea based on my understanding of how rotaries work.

    I think the main reason rotaries aren't more popular is because (and I don't know about the new rotary engine used in the RX-8, but I know this is true for the 1st and 2nd gen rotaries) they consume a LOT of fuel (60 litre tank for an 86, 1.8 litre RX-7???), and have a tendency to overheat under harsh conditions. They're a good design concept, but they do have their inherent disadvantages.

    Just out of curiosity, how are the sides of the main chamber shaped? I've only seen a cross section of a rotary to visualize how the rotor spins, and show the gaps left for the combustion phases. but I've never seen the sides (i.e. where the shaft the rotor is attached to comes through the chamber) of the engines, is it just flat, perpendicular to the walls which the rotor runs against?
  13. Re: Imagine an S5000

    I've never seen a 6 cycle rotary before but I think it would be cool to try it. I think it would give it a more even torque so it would be better than an inline 4 rotary engine.

    I would assume that the sides are flat. I've only seen cross-sections of it too.

    You're right about it being unreliable. The teeth on the inside will eventually get totally stripped. I don't know about cooling though. When it comes to fuel efficiency the RX-8 gets 20 mpg. It also might be more expensive to build a rotary engine than a normal cylindrical engine. I don't know for sure though.

    I want to eventually get an RX-7. I can't afford one yet because I only have $4,000.00 saved up. I would have to get one with low miles because of what I just said.

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