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Originally Posted by dayna240sx
no,
I STILL think it would be better if they stretched the rotors another 10mm or so each and keep it a 2 rotor.
3 rotor 20B's have the same overlap as a 2-rotor, so unless they re-design the e-shaft in the 3-rotor so each rotor is opposed from another 120 degrees it would be useless,
much more power can be obtained by wider rotors, keep the rev happy nature of the 12A/13B, but with mass amounts more torque...
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I for one believe it would be easier to design a new eccentric shaft, than a completely new rotor/housings (entireley new motor). Essentially they would be adding onto what they already know.
I like the idea of a 20b renisis with each rotor 120 degrees out, and providing seamless power, and impoving torque figures. The power to weight would stay the same as the renisis, yet you would add 50% more power with the 3 rotor.
Really the only down side would be adding a couple more moving parts, and the added weight of the extra housing/rotor. But if you take into account that added weight of the turbo/supercharger that it would take to bring the 2 rotor into the same power range, as well as the decreased reliability of boosting. The 20b starts to sound even better.
As far as rev happy, it should be able to stay similair to the 13b, due to the 120 degree out of phase setup, as well as a lighter flywheel that can be utilized due to the more torquy (lol) motor.
If you figure that the new rx8's are seeing 200 hp to the wheels, you should be able to expect 300 hp to the wheels (360-370 flywheel hp) of a 20 n/a powered rx8/7. Which would be a great place to be to put the 7 back into domination.
Regardless what they decide to do They need more than the present renisis!!