renesisgenesis

I have heard various comments on the actual rpm of the renesis/actual ignition fires, etc.

But what I am curious about is:

Is the flywheel rpm going to match the tachometer?

Old Rotor

Yes....What you probably heard was the rotors are 1 cycle to 3 cycles of the crank.

CyberPitz

The Eccentric shaft is the measuring factor of your RPMs. Every one revolution of the Rotor is 3 rotations of the eccentric shaft.

Easy_E1

iTrader: (2)

The the tachometer is run by the Eccentric Shaft Position Sensor. So yes the flywheel speed is the same as what the tachometer is displaying.

MazdaManiac

iTrader: (3)

http://www.youtube.com/watch?v=OuId4nuxXaM

CyberPitz

*Looks at avatar
Wants to click youtube link
Realizes no **** on youtube
doesn't click link*

04RX8man

^lmmfao!!!!!!......haha

04RX8man

oh forgot about the Op as other said yes flywheel rpm=eccentric shaft rpm...

so at 9000 rpm the rotor is technically spinning at 3000rpm....

User24

iTrader: (1)

Then, why don't the rpm gauge just max out at 3000. This is like those japanese motorcycles that show higher rpm than actual.

04RX8man

piston car rpm=crankshaft rpm
rotary car rpm=ecc. shaft rpm

it's measuring the rotationi of the engine which is crankshaft/ecc. shaft

User24

iTrader: (1)

So the piston is really gauge / 2, and renesis is gauge / 3 huh.

renesisgenesis

The flywheel rpm is what ultimately matters. That is what connects the motor to the clutch/transmission/wheels. apparently, on both piston and rotory cars, the tachometer matches the flywheel rpm, so there would not be any sense in making the rx8 tach show 3000, because the flywheel really IS going at 9000 rpm.

If the rx8 was at only 3000 rpm, there is no way 159 pound feet of torque would get 232 bhp; in fact, it would be impossible to even get 159 bhp, sense bhp and torque are always identical at 5252 rpm, and below that, torque is always more.

Jedi54

iTrader: (7)

"idiots".
damn, MM beat me to the punch.