Why lighten your flywheel when you can buy new rims?

[scottiescottiescottie]

So as far as rotating mass goes the lighter it is the faster it accelerates right?

So why spend big $ lightening your front pulley or flywheel on your Subaru when you could spend the same money and get super light rims?

weight savings will run at around 8-10 KG compared to scratching 4-6kg off your flywheel. ;D

Whats the deal? Why do so many people lighten their flywheel and then run 20" Chromes that weigh around 18kilos??!!

It just doesn't make sense to me???

[aim]

It doesn't make sense, but that doesn't matter when you're a baller dawg.

[Guest boostcut]

a lightened flywheel can be had for 600 or less. wheels are more than 600 for a decent forged set.

so as far as cost goes, the flywheel is cheaper,

but the other side of the coin is size of wheels and tires, as this too effects acceleration.

[aim]

I think he was asking... why spend the money on lightening the flywheel and THEN also forking out large sums of money to pack all that weight back onto the drive train in the form of chromies.

[Guest boostcut]

oh, well i have an answer for that too, maybe he wants to rev it up really fast in his garage, but still be a home boy on the streets.

[Koom]

Balance each other out so you can maintain standard levels of performance?

[Optical]

Because of inertia

[aim]

Shit, move outta the way. 5th form physics nerd coming through.

[Optical]

5th form? ive got a masters in it haha

[Koom]

Surely you could have answered it with something more like this;

[Optical]

haha nice wun

[Guest]

 Koom said:

Surely you could have answered it with something more like this;

lol hahaha that only says how u got the formula and doesnt really say much :-D

[aim]

yus derivations. I basically doing an exam comprised of them tomorrow.

[Guest]

they r basically a BITCH!!!!!!!!!!

[aim]

I kinda like doing them. Although they take a lot of knowledge of the subject and I generally always run out of time (in an exam) and end up with like 3 pages of scribble

[Koom]

 aim said:

I kinda like doing them. Although they take a lot of knowledge of the subject and I generally always run out of time (in an exam) and end up with like 3 pages of scribble

I used to really enjoy doing them aswell. The ability to actually do it fades pretty quickly once you stop though. I've found that tutoring helps keep it alive in my brain when I get the chance.

[Joker]

i wuld be moar inclined to answer why lighten your flywheel at all - bit like a P-plate - be one of my last things to do on a car ever

(and yes i under stand WHY but not a good reason too etc)

momentum vs accelration is a tuff choice!

[Koom]

I have an aluminium one (~3.5kg) and almost want to put it on my wagon while the RS is dead just cause it makes the engine feel so much more "alive"

I also don't have chromies.....

[GravelBen]

There is an improvement in throttle response (which can apparently help with turbo lag as well)... on the downside they can be a bit of a pain in the ass to drive around town - ie when was the last time you had to blip the revs to smooth out an UPshift?

Agreed about the stupidity of putting big heavy wheels on a car though.

[albaru]

I'm guessing that the angular momentum attained by a flywheel going 8000 rpm is comparatively higher than angular momentum of wheels revolving up to 12x slower.

So it's probably best to do both. QED ;D

[subieboy]

 Koom said:

Surely you could have answered it with something more like this;

ok in 1st grade maths for us feckers that dont math like you's nerds au!

[aim]

there's no such thing as a derivation of inertia in first grade maths

But basically it's the derivation of the equation to calculate how much force it takes to make something rotate.

[D-Style]

 aim said:

there's no such thing as a derivation of inertia in first grade maths

But basically it's the derivation of the equation to calculate how much force it takes to make something rotate.

I calculated you need 500hp.

[pedro]

How many members have lightened there flywheels and run on heavy chrome wheels?

Doubt if its many if any.

Most people would be looking for a performance gain and would be intelligent enough to realise the futility of such a combo.

The few who dont..dont matter..

[Joker]

haha not many but keep an eye on the crimes thread for Spec C's on chromies...

(or the unfortunate here who buy a car with them on)