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  • Profile views: 3,418
  • Profile created: January 2007
  • www.bebo.com/mazdabois
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Rotorious Major Label
Hometown:
puke New Zealand
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About Me

Me, Myself, and I
Calling all mazda enthusiasts this band is 4 you. feel free to join if your in2 mazdaz and rotary engines. u dont hav2 own a mazda either, so leave a comment or check out da pics iv got of sum mean mazdaz. no h8ers allowd, otha cars r mean 2 bt mazdaz r the 1s worth making a band of. so join da band..sweet l8azz

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  • what the N/A 787B Le mans race car is capable of!!!

    Engine speed (RPM's) were deliberately kept low for longevity under the extreme stresses incurred during a 24-hour automobile endurance race. The 787B was reported to have a redline around 9000rpm. However, interviews with Mazda's 787B race engineers revealed that the power of the quad-rotor increased dramatically above 9000rpm. -"One engineer stated that the car could develop more than 930hp with a redline around 10,500rpm"-. >Engineers also commented that during the post-race inspection and tear-down of the quad-rotor engine they discovered that all aspects of the engine were still in excellent condition and could have run another 24-hour race. This is a polarizing testament to the reliability and performance of the modern Wankel rotary engine.<
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    Mazda MPS engines
    Out of the factory compared to the new Holden commodore Omega weighing at 1690 kg, the Mazda MPS engine pumps out 10 more kw then the 3.6 Litre alloytec v6 with its 2.3 Litre 16valve DOHC Turbo at 190kw with a weight of 1403kg!
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    2008 MAZDASPEED3
    The all-new High-performance sport compact design is powered by a MZR 2.3L direct-injected Aluminum construction turbo engine churning out 263 HP, 280 lb-ft of torque enables a rush of acceleration with 0-60mph in 5.4 seconds!
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    Rotary R&D!!
    Apprently, in australia there is an company that is making for the 1st time..rotor housings made from ceramic material(not coated)..and predicting drag races will make a 13B produce 1500hp!
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    N/A 1.3 Liter RENESIS 2-rotor rotary
    6-speed manual overdrive (short throw shifter)
    Horsepower, SAE net 232hp @ 8,500
    Torque, SAE net (lb./ft.) 159 @ 5,500
    Redline 9000!!
    Type Rear-Wheel Drive (RWD)
    ^
    Mazda are working on a range of conventional gas engines for 2010 which should see improvements of about 20-percent in fuel economy, and 15-25 percent better power compared to the current Rx-8 stats above

    6 QUESTIONS TO 6SEC ABEL IBARRA:-

    1/ Where do you think rotaries are headed in drag racing?

    In the right direction, but with less than a handful of individuals and companies doing rotary development, things are tough. The pistons guys all have 50+ companies doing R&D on things like cams, heads, pistons, etc… for their motors. The budget and time spent on Rotary development is starting to make things tough.

    2/ Do you think the rotaries will break the 5 second barrier?

    Yes, but not a 3-rotor; possibly a 4-rotor.

    3 /Are we reaching the limits of the 20B?

    No, there is still power left in the 3-rotor. We haven’t reached the top yet.

    4/ Are we more likely to see more 26B’s in racing now that drag racing is getting so much quicker and more competitive?

    Maybe not in the NHRA, but there might possibly be changes for the other racing series here in the USA.

    5/ Over your career in drag racing what is the one or two moments that most stand out?

    The first was beating Siguel’s 3-rotor FD with my 2-rotor FD. The second is the helicopter ride to the hospital after my accident in 2000.

    6/ What do you think of Australia’s achievements with there rotaries?

    Australians are doing very well in top flight rotary drag racing, but they are tops in the Rotary street and show scene.



    0 Comments 309 weeks

  • piston vs Rotary

    This article's topic will be a discussion of some of the distinctive features of a Mazda rotary when compared to a production-based four-stroke reciprocating engine. Much of the comparison will be technical, but some will be based on opinion - my opinion, since I'm writing this darned article!

    To begin, for simplicity, we'll compare two 1-cylinder engines and we'll only talk about one of the rotor flanks--there are three.

    All rotational angles are quoted for the output shaft (eccentric shaft/crankshaft), not the rotor. Both engines burn a compressed fuel-air mixture to develop rotational power. Both are four-stroke engines.

    However, one big difference between them is that the recip has 180 degrees per stroke (or 4 x 180 = 720 degrees per thermodynamic cycle) while the rotary has 270 degrees per "stroke" (or 4 x 270 = 1080 degrees per thermodynamic cycle). Yeah, you may have to think about that one for a bit, but trust me, it's true.

    This has some good and some bad consequences. Assuming that both engines have similar maximum rpm's (and I think that is roughly true), it means that the rotary has 1.5 times as many milliseconds to accomplish each "stroke". This is one reason why rotaries breathe so well - they have more time (in milliseconds) to draw in and spit out the mixture.

    They also have more time for the power stroke - a real plus to get the most out of the combustion gas, especially at high rpm. Now the bad part. The rotary also has 1.5 times as many milliseconds to transfer heat from the burning mixture into the oil and water.

    This is one reason why rotaries waste more heat in the process of staying cool. Another consequence is that, if you only consider one flank of one rotor, the rotary only gets 2/3 as many power pulses as the recip. However, there are actually 3 flanks to each rotor, each at a different point in the thermodynamic cycle, so each complete rotor actually gives 2 times as many power pulses (3 times 2/3) as a 1 cylinder recip.

    Put another way, a 2-rotor rotary has the same number of firing pulses as a 4-cylinder recip, but, because the DURATION of each firing pulse is 270 degrees, the engine runs smoother due to the overlap of the firing pulses.

    OK, so what is the point of all this math? Well, the point is to get a better understanding of WHY certain things are so important to a rotary - especially heat transfer. Remember, heat is potential power, so keeping heat in the combustion mixture makes more horsepower you can use.

    On to the next item: In comparison to a recip, the intake charge (once it is inside the engine) actually travels a long, tortured path.

    In a recip, the center of gravity of the intake charge only moves an inch or two as the piston moves back and forth between top dead center (TDC) and bottom dead center (BDC). In Mazda's rotary, the charge moves a long way - more like 20 inches - from intake to exhaust. One bad result is that there are a lot of square inches of surface through which to transfer heat, reducing thermal efficiency. However, here is the big point: The entire mass of the intake charge must pass through the narrow area between the rotor housing and the rotor as each rotor flank passes through TDC. This is made possible by the "rotor depression" which is cast into each flank of the rotor - if it weren't for that path, the partially burned mixture would never be able to squeeze through the narrow clearance between the rotor housing and rotor (usually around .010~.015 inch) at high rpm. There is a crude parallel with a recip that has a "pop-up" piston that tends to cut the combustion chamber in two at TDC. Some recips even cut a "fireslot" (notch) in the middle of the pop-up area to prevent it from stopping flame front propagation in the chamber. For this reason and others, the shape of the rotor depression is quite important. It also has a major influence on determining the compression ratio of the engine and, as all the "Internal Combust

    0 Comments 310 weeks

  • Were duz mazda stand on the quarter mile

    Abel Ibarra
    Abel Ibarra Worlds Fastest Rotary 6.6 @ 204.35 mph


    Jose 'Siguel' Torres
    Major League Racing
    World's 2nd fastest rotary
    Jose 'Siguel' Torres 6.81 ET @ 202 mph

    Pac Performance
    Pac Performance Yellow MX 6
    Australia's Quickest Rotary National Record Holder and Best Et 6.96 s @ 199.17 mph Pac Performance

    Grant Williams
    Grant Williams 7.66 s @ 176.92 mph
    Australia's quickest 13b rotary

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    0 Comments 310 weeks

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