Next Rotary A 16 X
10-09-2007, 10:28 AM
#27
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not necessarily. we know from a year or 2 ago that they were working on a new tranny for the "2nd gen rx-8" . RG heard from the engineer himself while at 7stock. so there woudl be no need to make it backwards compatible if other factors pushed in a different direction(strength , durability etc)
10-11-2007, 05:42 PM
#28
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Thoose housings look thin,.. like 12a housings. Did you guys think of the fact that with the current side port intake/exhaust increasing the eccentricity and decreasing the rotor width effectivly gives you a much larger avaliable port volume vs displacment then the current motor? It should breath even better at high rpm,..
10-12-2007, 10:24 PM
#32
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Thoose housings look thin,.. like 12a housings. Did you guys think of the fact that with the current side port intake/exhaust increasing the eccentricity and decreasing the rotor width effectivly gives you a much larger avaliable port volume vs displacment then the current motor? It should breath even better at high rpm,..
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Last edited by Renesis_8; 09-11-2011 at 01:27 PM.
10-16-2007, 01:39 PM
#35
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Looking also at the way a rotary works, if everything was balanced correctly, using strong enough materials, I don't know why there wouldn't be a problem =/
10-16-2007, 03:28 PM
#37
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I'm not much of a tech head, but haven't the revs been more limited by what the transmissions can handle than the engine?
Seems like the bigger challenge is building a transmission to mate to it. Most suggest the Renesis has always had more revs to give than the transmissions have been able to handle. If that's the case I wouldn't worry too much about the if this engine redlines slightly lower. Worry about the tranny.
Seems like the bigger challenge is building a transmission to mate to it. Most suggest the Renesis has always had more revs to give than the transmissions have been able to handle. If that's the case I wouldn't worry too much about the if this engine redlines slightly lower. Worry about the tranny.
10-16-2007, 05:50 PM
#39
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I dont think the transmission can be a problem. A formula 1 engine run at 19 000 RPM. I know it cost a lot more but just a reduction gear can limit the speed of the transmission... just my 2 cents
10-18-2007, 11:52 PM
#41
I know one thing, I hope the larger stationary gears and e-shaft are beefed up substantially since the centrifugal forces of the heavier larger rotors are now further away from the e-shafts center of rotation. That will put way more stress on them.
10-19-2007, 12:00 AM
#42
I'm not much of a tech head, but haven't the revs been more limited by what the transmissions can handle than the engine?
Seems like the bigger challenge is building a transmission to mate to it. Most suggest the Renesis has always had more revs to give than the transmissions have been able to handle. If that's the case I wouldn't worry too much about the if this engine redlines slightly lower. Worry about the tranny.
Seems like the bigger challenge is building a transmission to mate to it. Most suggest the Renesis has always had more revs to give than the transmissions have been able to handle. If that's the case I wouldn't worry too much about the if this engine redlines slightly lower. Worry about the tranny.
Automatics and cutches can limit and engines rpm. This new rotary will have a larger overal trochoid. Look at it as and older 13b housing being able to fit inside this newer one. So by design, everything else has to be bigger. I don't think Mazda is making the rotors wider. Anyways this overal larger size should effect the rpm red line some. You have more weight furthur away from the e-shafts center of rotation. This increases the centrifugal forces.
Last edited by T-von; 10-19-2007 at 12:03 AM.
10-19-2007, 06:58 AM
#43
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10-19-2007, 08:16 AM
#45
Yes, it is the perfect opportunity for the rotors to be lightened significantly, which is not as easy as it sounds. Structural integrity is a dog when you're reducing mass. This becomes most apparent in racing where the loads are greater and the high rpms are more sustained.
Paul.
Paul.
10-19-2007, 09:03 AM
#46
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I don't think we know if it's wider yet. They increased every other dimension making it a "long stroke". They might not have widened the rotors at all. They could ahve though but I don't see them being 20mm wider. I guess we'll find out soon enough though.
10-19-2007, 09:43 AM
#49
Just kidding. They can print whatever they want to. I'll be as happy to see some figures as the next guy.
Paul.
but ive got a lead on a couple