2003 BMW 760Li: Twelve cylinders, 438 horsepower ? and two iDrives

[Howard]

Originally posted by: mAdD INDIAN

Originally posted by: Marshallj

Originally posted by: mAdD INDIAN

Originally posted by: Howard
It needs active air suspension.

madd, I think the RENESIS is supposed to be very smooth also.

RENESIS is a rotary engine, I was talking about V12s.

And yea I figure the Renesis should be smooth since it just spins around an axis 😛

The rotary doesn't really spin evenly around a circular axis the way you think it would, it actually wobbles in an oval.

But you can add counterweights to remove the vibration from a wobble, while you can't add counterweights to remove the vibration from reciprocation as in a piston engine. In a piston engine, half of the rod and the whole piston is not counterbalanced.

True but a V12 and Straight-6 engines are naturally harmonically balanced so there really isn't any need for counter-shafts or anything like that. Smoothness is inherent in their design.

Add boxers to that.

 

[Howard]

Originally posted by: Marshallj

Originally posted by: mAdD INDIAN

Originally posted by: Howard
It needs active air suspension.

madd, I think the RENESIS is supposed to be very smooth also.

RENESIS is a rotary engine, I was talking about V12s.

And yea I figure the Renesis should be smooth since it just spins around an axis 😛

The rotary doesn't really spin evenly around a circular axis the way you think it would, it actually wobbles in an oval.

But you can add counterweights to remove the vibration from a wobble, while you can't add counterweights to remove the vibration from reciprocation as in a piston engine. In a piston engine, half of the rod and the whole piston is not counterbalanced.

How can an axis be circular? 🙂