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351W: 14000rpm, 1000hp
anyone ever heard of this company?
http://www.coatesengine.com/ they make rotary valve systems. They apparently built a 351W that spins to 14000rpm, makes 1000hp, gets better gas milage, lower emmissions, etc. It looks like they're not in that market anymore, but pretty cool none the less. http://www.coatesengine.com/eGallery/images/pic02.jpg http://www.coatesengine.com/eGallery/images/pic03.jpg http://www.coatesengine.com/eGallery.../V-8engine.jpg http://www.coatesengine.com/eGallery/images/pic06.jpg |
If you could afford something like that, I doubt gas mileage would be a serious consideration. Probably be a slam dunk at my local neighborhood car shows.
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Very :cool: !
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Quote:
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I think that's the same engine that powers the space shuttle.....
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From a mechanical standpoint it has a LOT of advantages.
physically a little bigger I wonder what it sounds like ? |
I think the sound question is very valid. I first read of these engines a couple of years ago. The make a point of down-playing the valve duration and overlap...both of which contibute to that sweet sound we love.
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Does anyone have any technical info on these? I'd love to read it. Sure is purty.
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Certainly has advantages not having to worry about valve float, valve reliefs in the pistons, bending a pushrod, the right springs for the cam etc. Though if you want to change your cam profile it looks like you need to replace lot's of stuff in the heads instead of some lifters, cam and springs. Better choose right the first time.
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There was Top Fuel car several years ago (may have been a decade or two actually, I've slept since then) that tried it. It does offer a lot of neat possibilities, but apparently more drawbacks than rewards at the time. I would think sealing and machining costs may have been two. With all the CNC stuff now the machining aspect may heve been eliminated..
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That valve design in relatively old, being used in some aircraft engines from the 40s. I also think I remember that Benz patented it back on those days too but not sure. Looks like sealing could be a big problem with them over the time.
If they want to get into the game they need someone to license that technology or start making aftermarket heads. Cool stuff!!! |
They used to have sealing problems with rotary engines at first too. I think if someone really wanted to get this going it should be possible. Although I would think a rotary disk spinning on the same plane as the cylinder would be better, I can see space as an issue and it would be hard to get one disk to operate intake and exhaust.
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