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Multi rotor Mazda rotary engines

Started by Monsterlover, January 04, 2014, 02:51:09 PM

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Rameses

#30
January 06, 2014, 06:39:06 AM
Quote from: derby on January 06, 2014, 03:32:15 AM

...and here's a 6-rotor rx-4:

http://jalopnik.com/this-six-rotor-mazda-rx-4-is-a-whole-hornets-nest-of-bu-1018716923




I'm pretty sure that's the only video I've ever seen of a drag car being run on a road course.


kopfjäger

#31
January 06, 2014, 07:54:58 AM
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derby

#32
January 06, 2014, 09:57:32 AM
-- derby

'07 Suz GSX-R750

Retired rides: '05 Duc Monster S4R, '99 Yam YZF-R1, '98 Hon CBR600F3, '97 Suz GSX-R750, '96 Hon CBR600F3, '94 Hon CBR600F2, '91 Hon Hawk GT, '91 Yam YSR-50, '87 Yam YSR-50

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ducpainter

#33
January 06, 2014, 10:16:56 AM
tee hee...

derby got derbied. ;D
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


derby

#34
January 06, 2014, 11:44:52 AM
Quote from: ducpainter on January 06, 2014, 10:16:56 AM
tee hee...

derby got derbied. ;D

funny thing is, i *almost* didn't post that link. i did a quick look for 5- and 6-rotor examples and that one just popped up.

...in other news, i really need to stop looking at rx-7s.
-- derby

'07 Suz GSX-R750

Retired rides: '05 Duc Monster S4R, '99 Yam YZF-R1, '98 Hon CBR600F3, '97 Suz GSX-R750, '96 Hon CBR600F3, '94 Hon CBR600F2, '91 Hon Hawk GT, '91 Yam YSR-50, '87 Yam YSR-50

click here for info about my avatar

Monsterlover

#35
January 06, 2014, 04:42:57 PM
It certainly would cost me less :)
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

Speeddog

#36
January 06, 2014, 05:33:46 PM
Quote from: Monsterlover on January 06, 2014, 04:42:57 PM
It certainly would cost me less :)

Sheeeeeit... you've got a big honkin' machine shop, you can make trick stuff like that for free.

[laugh]
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ducpainter

#37
January 06, 2014, 05:40:57 PM
Quote from: Speeddog on January 06, 2014, 05:33:46 PM
Sheeeeeit... you've got a big honkin' machine shop, you can make trick stuff like that for free.

[laugh]

...and you can send him a cad file...right?

Maybe he'll make one for you too. ;D
"Once you accept that a child on the autistic spectrum experiences the world in
a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent.”


the_Journeyman

#38
January 06, 2014, 05:41:42 PM
Quote from: Monsterlover on January 06, 2014, 05:35:31 AM
Jebus!

$32,000 for a 4 rotor?!?!

Yea, my car is only worth about $2K on a good day...

JM
Got Torque?
Quote from: r_ciao on January 28, 2011, 10:30:29 AM
ADULT TRUTHS

10. Bad decisions make good stories.

Dirty Duc

#39
January 07, 2014, 09:07:11 PM
So... the deal with rotaries...

3-rotors use the FD housings with a special eccentric shaft.  4-rotors use an unobtanium 2-piece eccentric shaft.  The reason it sounds like an F1 car having sex with the god of war?  each rotor is 3 cylinders... with peripheral ports...

Ducs are cheaper, trust me.  LSR Ducs are cheaper, trust me.  Billet crankshafts and custom engine work for Ducs are cheaper than 3+ rotor Mazda parts... Everything else rotary takes a specific skill set, and will not be street legal in anything newer than 25 years old.

Monsterlover

#40
January 08, 2014, 03:42:56 AM
Quote from: Dirty Duc on January 07, 2014, 09:07:11 PM
Everything else rotary takes a specific skill set, and will not be street legal in anything newer than 25 years old.

Why?
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

Dirty Duc

#41
January 08, 2014, 05:00:24 AM
Because peripheral ports can't pass smog.  Too much overlap in the port timing.  Long flame fronts require funky ignition timing.  Even stock motors have trouble passing smog tests.

I'm sure you can build the bits and you can learn the idiosyncrasies if you want.  It's just an expensive road to go down.

I think the biggest problem is the ever-dwindling supply of rotor housings since the advent of the MSPRE in the RX-8.

Monsterlover

#42
January 08, 2014, 05:21:35 AM
No smog here ;)
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

lethe

#43
January 08, 2014, 04:47:00 PM
Quote from: Monsterlover on January 08, 2014, 05:21:35 AM
No smog here ;)
shhh, they'll get jealous  ;D
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hooligan machinist

#44
January 09, 2014, 08:35:24 PM
 Those are really cool vids Kevin. [thumbsup]
We need to figure out a way to refit one of those 4 rotor setups into my 3000gt. :o
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