flywheel questions

[ACC0RD22]

Horribly O/T but I am wondering about the comment made about freeing up torque?
I've never take a physics class, so I can't argue with you about technical terms such as your spinning shaft. I have a honest question, not a challange to what you said though.
The question is this: If you take a car with stock rims and run it on a dyno, then swap on some lighter rims we are going to dyno more power? Is this what your saying?
I'm confused basically about how taking away weight makes my car make more power, because my car is faster when it is stripped out of interior, but not because of the engine making more power. The car simply weights less, so the engine has less to haul around. But I still have the same 140hp.

???

- Zipcreature

yes, rotating mass is a different story than other wieght on the car. If I remember my highschool physics correctly (god, I should that was only last year) then torque is a measurement of work. Now, if you subtract weight from the "spinning shaft" by putting lighter wheels on, then you are reducing the amount of work that the engine has to do to spin to a certain RPM.

Honestly, Im just talking in circles right now . . . its 1:14 am and I hardly remember anything from physics last year. Im sure someone else can pick up the peices of my shitty explanation and actually explain how this stuff works . . . but at this point, I dont know/remember enough to do it. sorry dude.

[flight50]

you car will accelerate quicker and it will deccelerate quicker. . like everyone says, less mass to rotate. the weight of a lighter flywheel won't carry thru the rpm band as a heavy one. some people are for them, some aren't. depends on the set up. until you get use to driving one, it will be different than stock for some from what i am told.

[92ex]

ive never heard anyone say that a lightweight flywheel isnt worth the money, everyone whose had them say they love them

[SteveB]

[QUOTE=zipcreatureThe question is this: If you take a car with stock rims and run it on a dyno, then swap on some lighter rims we are going to dyno more power? Is this what your saying?
[/QUOTE]

Yup. The dyno measure how quickly the *package* accelerates the drum. By lightening the wheels, or flywheel, or crankshaft, or whatever of rotating mass, you're lightening the mass that is being both powered and measured.

Easier to accelerate, higher torque numbers recorded.

And higher horsepower extrapolated.

[zipcreature]

[QUOTE=SteveB]

Yup. The dyno measure how quickly the *package* accelerates the drum. By lightening the wheels, or flywheel, or crankshaft, or whatever of rotating mass, you're lightening the mass that is being both powered and measured.

Easier to accelerate, higher torque numbers recorded.

And higher horsepower extrapolated.

This makes sense to me. I suppose it only applies to moving parts though! Thanks for the explination.

- Zipcreature

[F22-GURU]

May I add a thought??

Better Power to Weight Ratio = Better Acceleration/Deceleration.

I've always known torque in the automotive sense to be known as the "twisting effort" required to turn a staitonary object into a reciprocating object.

So Less Reciprocal Mass would have to create more power as explained earlier with the HP formula.

[ACCORDEX92]

i bought the prolite flywheel,cant wait to put on