It's all about the torque and the S2K just doesn't feel fast without it. Our cars may handle slightly better but the Evo has more power and is a capable handler also. I was considering trading in the S2K for the Evo but the S2K looks better, gets the chicks (my gf likes the car), droptop, nicer interior and is a babe magnet.

 

F1 cars have very very very short strokes. Take an engine with 18,000 rpm and a 40mm (pretty close to F1 I believe) stroke and compare it to a car with an engine with a 85mm (close to S2000's) stroke at 9000 rpm.

So, with each rev, engine A's pistons move 80mm. Engine B's pistons move 170mm.

Now, 80mm*18,000= 1,440,000mm or 1,440 meters per minute. 170mm*9000=1,530,000mm or 1,530 meters per minute.

Engine B's pistons are moving faster! Piston speed has to do with RPM and stroke only. compressed air valves and compression ratio (one guy on the evo board mentioned that) have NOTHING to do with piston speeds.

 

Well I agree...except compressed air valves indicate that the F1 teams had, once upon a time, a problem with their valves not opening fast enough. I assumed that was fast enough to move out of the way of the fast moving pistons, but now I see what you mean.
I'll try to find the piece that I read.


EDIT: This is not the one I read previously, but it'll do.

http://www.indiacar.com/index2.asp?pagenam...al/pvengine.htm

I SUPPOSE you're right though.

 

don't forget that my calculation can only net you an AVERAGE piston speed.

The piston accelerates and decelerates (moving at 0mph at TDC and BDC and its fastest at somewhere below half-way through the stroke). The acceleration and deceleration are not even constant (a sine curve) because of the fact that the crank and rod combo results in increased acceleration and decceleration below the half-way point. When the piston is near TDC it is actually moving much slower than its average speed, which gives the valves plenty of time to close.

 

Like I said somebody needs to tell that dude our engines pistons speeds excede F1 cars.

 

I read that 3 times and still don't know exactly what he was saying.

The seats! Where? Uncomfortable?

And "although" usually leads to another statement. With a down pipe and catback.... what? What happens with a down pipe and catback? Someone please tell me how the story ends!!!

 

F1 valves still move faster then normal car valves.

That example had 18k engine valves moving twice as fast as the 9k engine.

The piston had a smaller distance to travel, but still had faster cycles.

 

"if you enter a turn slowly (~40km/h) and throw it into first gear then rev it to 8000rpms ofcourse with the clutch it...then let go of the clutch..it drifts smoothly before it fixes itself..."


I'm soory, is he kidding - drop it into first gear in mid turn?!!! Did I read it wrong or something, please tell me I did, coz otherwise this guy is a total idiot!