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06-26-2012, 07:28 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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The rotary is dead
Today Mazda announced it was discontinuing production of the rotary engine.
Major bummer on many levels.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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06-26-2012, 07:43 PM
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Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,690
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Yeah, well.. Thats the way I felt when 500CC two strokes went away in GP motorcycle racing. 
__________________
Bill Pendergrass
ME/AE '82
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
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06-26-2012, 07:56 PM
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Join Date: Mar 2005
Location: Huntsville, AL
Posts: 426
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No more rotary mfg?
Could be a good time to buy all of 'em you can get your hands on?
(I miss my RX7)
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06-26-2012, 10:04 PM
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Join Date: Mar 2005
Location: Calgary, Canada
Posts: 5,745
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That is a bit sad after all the money and engineering Mazda put in over the years but there are thousands of engines floating around and will be for many years if you wanted to build one up for a car or aircraft.
The RX8/ Renesis did not do well for Mazda- tons of warranty issues and it was hard pressed to match the fuel efficiency, emissions and power of modern piston engines.
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06-27-2012, 12:50 PM
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Join Date: May 2006
Location: Pocahontas MS
Posts: 3,884
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I'd bet it's not that big a deal. They also stopped production on the RX-7 prior to startup on the RX-8/Renesis. They've already got a new version of the engine (with significant changes, including a displacement increase & modified direct injection) at the prototype stage.
Charlie
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06-27-2012, 03:53 PM
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Join Date: May 2009
Location: Houston, TX
Posts: 531
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My first run RX8 is still going strong....love it.  I do hope the revisit it....decided not to build a plane with one though. But in the car it's been pretty bullet proof. Just did my big 60K mx....
Oh, and from the article:
Quote:
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the rotary design is notorious for its low fuel economy and high oil consumption
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It's designed to burn oil. That's like saying "wheels are notorious for rolling".
Anywho. 
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-Rick Greer, VAF #2492
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06-27-2012, 05:28 PM
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Join Date: Feb 2006
Location: San Diego, CA, U.S.A.
Posts: 770
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Quote:
Originally Posted by DCat22
Oh, and from the article:
"the rotary design is notorious for its low fuel economy and high oil consumption"
It's designed to burn oil. That's like saying "wheels are notorious for rolling". |
Um, no... 
Wheels are designed for the purpose of rolling. Engines are designed for the purpose of converting chemical energy into mechanical energy.
Rotary engines having high oil consumption is an undesirable consequence of a design compromise. They're designed in such a way that will burn oil, but they're not designed for the purpose of burning oil. There is a difference.
So that quote would be more analogous to saying something like "Brand A tires are notorious for high tread wear".
Anywho. |
06-27-2012, 07:05 PM
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Join Date: Jan 2006
Location: Dallas, TX (ADS)
Posts: 2,180
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The rotary is dead.... long live the rotary.
Interestingly enough, the rotary lives on in the ASK21Mi self-launching glider.
TODR
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Doug "The Other Doug Reeves" Reeves
CTSW N621CT - SOLD but not forgotten
Home Bases LBX, BZN
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06-27-2012, 07:09 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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The Mazda Wankel rotary engine uses an engine driven pump to meter oil directly into the intake system, for the purpose of lubricating the combustion chamber seals.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010 
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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06-27-2012, 07:39 PM
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Join Date: Jul 2005
Location: Southern California
Posts: 617
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Actually, the correct quote would be: "V-8 engines are notorious for burning gasoline"
Quote:
Originally Posted by roee
Um, no...
Wheels are designed for the purpose of rolling. Engines are designed for the purpose of converting chemical energy into mechanical energy.
Rotary engines having high oil consumption is an undesirable consequence of a design compromise. They're designed in such a way that will burn oil, but they're not designed for the purpose of burning oil. There is a difference.
So that quote would be more analogous to saying something like "Brand A tires are notorious for high tread wear".
Anywho. |
__________________
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David Boeshaar
RV-9A - N18TD (reserved) - Fuselage.
"My greatest fear: What if the hokey pokey really IS what its all about?"
TDAircraft.com
-July-
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