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Six ROTOR???

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Old 10-17-02, 01:23 AM
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Unhappy Six ROTOR???

Ok Someone in Prince Albert City of 40,000 and me being one of the ONLY REX entusiasts i heard of someone bragging that they have a six rotor engine that produces arround 500hp that is the way he baught it from BC... apparently it is a race car engine... he claims that the engine is smaller than mine and the rotors are rogghly 1/3 the size of mine... now can somone collaborate his claims... or is he just bs'ing all the way?
Old 10-17-02, 01:32 AM
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6 rotor with 500HP sounds like bullshit, not possible,a 4 rotor makes more than that ,well what do i know
Old 10-17-02, 01:34 AM
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yes but take a look at this web site! and take a look at the pictures!
http://www.hurley-engineering.ltd.uk...n%20_turbo.htm

but i sincerely dought he baught that for what he said he did!
Old 10-17-02, 01:39 AM
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Originally posted by jreynish
yes but take a look at this web site! and take a look at the pictures!
http://www.hurley-engineering.ltd.uk...n%20_turbo.htm

but i sincerely dought he baught that for what he said he did!
i got to see that **** to believe it
Old 10-17-02, 01:45 AM
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crazyness...though those that doesnt look like it'd have rotors 1/3 the size of ours. lookit the alternator on top of it for size comparison.
Old 10-17-02, 01:45 AM
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if you click on the link for 900 BHP Hurley Six Rotor Engine Seeing is Believing ! you'll notice the top of the page says "DREAM PAGE" the guy is full of ****
Old 10-17-02, 01:49 AM
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i did catch that,he is so out of his mind
Old 10-17-02, 07:29 AM
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Old 10-17-02, 08:28 AM
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I believe the folks at Granny's Speed shop in Washington State made a 6-rotor motor that they were using some time ago in a dirt-track stock car. Its on their web site, you'll find it if you poke around. I don't have time this morning to go find it, though, sorry!
Old 10-17-02, 11:53 AM
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From a technical point of view, there is nothing to stop you from building a 6-rotor... hell, even a 12 rotor engine. You'd have to manufacture a few custom parts (the eccentric shaft comes to mind ), but it's possible. Now whether you could actually use it in a working application, well that's a whole other ball game. Just needs LOTS of money, and the attitude that you CAN get it to work (even if it will take years ).
Old 10-17-02, 01:07 PM
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The eccentric shaft flexing is a problem when going with that many rotors........
Old 10-17-02, 01:27 PM
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Ha! I had a dream like that, then I woke up in a mess. This is about the craziest I've heard lately, that is real.
There was another 4 rotor at sevenstock that they are going to throw in an fd w/ big single. He didn't sound very confident about the engine however. https://www.rx7club.com/forum/showth...hreadid=117228
Old 10-17-02, 01:30 PM
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The link above is the fd engine, the pic is a 4 rotor from an airplane. The guy cast his own int. housings fgrom aluminum for the av. engine.
Old 10-17-02, 01:31 PM
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Good old saying well i just say it but it goes like this MORE ROTORS MORE PROBLEMS
Old 10-17-02, 01:32 PM
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It is a good possiblity that they either used 10a or 12a parts....hummmmm
Old 10-17-02, 02:11 PM
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sounds like **** to me. There's more to it than just bolting two 20b's. The reciprocating mass alone raises some isssues.
Old 10-17-02, 02:16 PM
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Originally posted by Ni5mo180SX
The eccentric shaft flexing is a problem when going with that many rotors........
iv never heard of the e-shaft flexing being a problem on rotary engines. Since our e-shafts are so damn strong compaired to a crankshaft. Its unreal. I dont think even 6 rotors would cause a big problem. But can you think of what you gas mileage would be? youd probaly get 8mpg on the highway!
Old 10-17-02, 02:28 PM
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Originally posted by OC_


iv never heard of the e-shaft flexing being a problem on rotary engines. Since our e-shafts are so damn strong compaired to a crankshaft. Its unreal. I dont think even 6 rotors would cause a big problem. But can you think of what you gas mileage would be? youd probaly get 8mpg on the highway!
Yup, e-shafts flex!
Just look at the 26B, there is more to it than just a pair of 13B's stuck together... they built a special intermediate housing to accomodate double bearings to compensate for flex in the the e-shaft... any larger than 3 and your gonna start having 'issues' with it... hell, the 3's may have that problem too!
Old 10-17-02, 06:26 PM
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yeah well that is what i thaught that there would be problems with a six rotor! however in theory if the rotors were infact 1/3 the size then you would be looking at 1/3 the reciprocating mass theorfor if you had a good eccentric shaft then it coult "possibly" be done! however i think the guy is bssing! but i will ask him to see it! then we will se how much bull **** he sleeps and bathes in hell by the sounds of it he even eats the ****!
Old 10-17-02, 06:47 PM
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Originally posted by autocrash


Yup, e-shafts flex!
Just look at the 26B, there is more to it than just a pair of 13B's stuck together... they built a special intermediate housing to accomodate double bearings to compensate for flex in the the e-shaft... any larger than 3 and your gonna start having 'issues' with it... hell, the 3's may have that problem too!
The three's have less of a problem, since the second intermediate housing incorporates a stationary gear and an intermediate bearing, hence the use of a two piece e-shaft.

e-shaft flex is pretty much eliminated with the guru racing flex kit. Just make one of those for a six rotor, there would be almost no flex... provided you could find a someone to balance that monster of an E-shaft.
Old 10-17-02, 06:53 PM
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Oops, my bad, it was a 4 rotor...

http://members.tripod.com/~grannys/4rotor.html
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