PQs Camaro [COTW 9/20/10]

[PQ]

Originally Posted by Dangeruss

That's what I'm going to try and do, though I'll be dropping to 18s. I guess we'll see how big that difference is and see what we can deduce.

If I had to guess, I'd say you'll see a 30 hp difference.

Once you pass up 20 inches it gets worse. 18 to 20 may not be so bad. I'm guessing 30.

[Dr Jkel]

Ok I am not trying to be a smart A** just trying to learn something here. I stolt some idearrs from Em and PQ with the PFadt suspension, sways, swings and trailing arms, I love them. I also have 22's well you know what kind. They are supposedly the same diameter as the stock wheels only wider in the rear, same height etc... not real sure about the weight.

PQ, Em and I have the same wheels, same brand, size etc just different styles.
I have an LS3 they have L99's we all have CAI, Header etc... they have Maggies I have a cam. But the difference is we have a wide variety of numbers in the dyno, A BIG difference Em has basically 37 more than me and 29 more than Randy.

Ok now I don't know alot but if the wheel is the same diameter, same size then what difference does it make? Wont the revolutions be the same no matter what? Maybe I am looking at it wrong.

I guess by what you are saying if my thinking is correct, if I put my stock wheels back on and go back to the Dyno I should increase my dyno numbers almost 20HP? Am I correct? So I should make around 483 with just the cam?

What is this sprung and unsprung weight you talk about Chris?

[Dangeruss]

Originally Posted by Dr Jkel

...Wont the revolutions be the same no matter what?...

Here's a quote from Tony in another thread.

Originally Posted by Nine Ball

It isn't simply about total static weight. While that may be a factor, it is more about Moment Of Inertia. MOI is dependent on that static weight, but also the relative distance from the center of the wheel, to the location where most of that weight is. The further from the center that the weight is situated on a spinning object, the more effort it takes to spin or accelerate the object.

Generally, a 22" wheel will have a greater distance from center where its weight is situated, compared with a 20" wheel. Even if both wheels weigh exactly the same amount, it is likely the 22" wheel will take more effort to accelerate (and decelerate).

Think of a figure skater on ice. When they have their leg sticking out, they turn very slowly. When they bring their leg in closer, and stand straight up, they spin very fast. Even though both cases, the weigh the same amount.

The best performance will be found with lower diameter wheels, which have more of their weight centered around the hub area, not the outer lip area. The worst performance wheels will usually be the heavier cast aluminum wheels, since they have thicker hoops than a forged wheel does. Cast wheels also have thicker spokes, since their material cannot handle the stresses as well as a forged wheel does. This is the main reason that forged wheels are better for performance.

Hope that helps

Tony

[WadeWilson]

Originally Posted by Dr Jkel

Ok I am not trying to be a smart A** just trying to learn something here. I stolt some idearrs from Em and PQ with the PFadt suspension, sways, swings and trailing arms, I love them. I also have 22's well you know what kind. They are supposedly the same diameter as the stock wheels only wider in the rear, same height etc... not real sure about the weight.

PQ, Em and I have the same wheels, same brand, size etc just different styles.
I have an LS3 they have L99's we all have CAI, Header etc... they have Maggies I have a cam. But the difference is we have a wide variety of numbers in the dyno, A BIG difference Em has basically 37 more than me and 29 more than Randy.

Ok now I don't know alot but if the wheel is the same diameter, same size then what difference does it make? Wont the revolutions be the same no matter what? Maybe I am looking at it wrong.

I guess by what you are saying if my thinking is correct, if I put my stock wheels back on and go back to the Dyno I should increase my dyno numbers almost 20HP? Am I correct? So I should make around 483 with just the cam?

What is this sprung and unsprung weight you talk about Chris?

Reducing your rotating mass can make a noticeable difference. I shaved 40lbs of rotating mass from my Camaro by going with the TSW wheels over stock and swapping my rotors out for lighter aftermarket ones.

[PQ]

My wheels were already rotating to 4th gear when he dynoed it. I'd have thought it woldnt' be so much loss.

[Da Hose]

OH COME ON..... you didn't really think you were gonna get out of this untouched did you?????



I'M N UR BUILDZ THREADZ....POSTIN MY PICZ!!!!!!!!

[mlee]

Here's the original front plate pic...

[PQ]

That just means you're lame. Nobody comes here any more. lol

[PQ]

Oh shit.

Chris startred it.

LMSAO

[GTAHVIT]

[PQ]

Hey, this is a serious thread for a serious build. I'm breaking new ground here. Going where no Hobbit has gone before.

[Da Hose]

yeah, we know Randy...there is gonna be a race!!!!!

[PQ]

[WadeWilson]

Originally Posted by PQ

Hey, this is a serious thread for a serious build. I'm breaking new ground here. Going where no Hobbit has gone before.

Originally Posted by Da Hose

yeah, we know Randy...there is gonna be a race!!!!!