[beamer814]

I looked around a little on-line and I just cant seem to find anything that tells me what kinda flywheel i should run. And I dont mean brand but the weight. Ive seen everything from 9lb flywheels to 35lb flywheels for my car and i was wondering what i should pic up. The more i drive the more i can tell the clutch aint gonna make it through another winter of sliping it so i dont spin the tires in the chicago snow but since i will have trans and out i was wondering what i should throw in there I know the basic principles the lighter it is the faster it revs and the less horse power that is consumebed by the rotation but i wanna go drag racing next summer and i need something that can still make the cheater slicks hook.

P.S.- I will be running 3.73s next spring if that makes a deffrence.

[HMERacing]

There is a big difference between because of rotating mass. If it's too light it may rev fast but bog off the line. too big and it is alot of weight to turn and won't rev a fast.
I think the extremely light ones (aluminum) are more for road racing. I think a billet steel would suit you fine. It is heavier and is more suited for drag racing.

[93hatch]

get yours resurfaced for 40 bucks

[HMERacing]

Originally Posted by 93hatch get yours resurfaced for 40 bucks

Unless its trashed from him slipping it in Chicago snow.

[93mustank]

Originally Posted by HMERacing There is a big difference between because of rotating mass. If it's too light it may rev fast but bog off the line. too big and it is alot of weight to turn and won't rev a fast. I think the extremely light ones (aluminum) are more for road racing. I think a billet steel would suit you fine. It is heavier and is more suited for drag racing.

This is a retarded statement....

Oh no...too light..cars revving too quick..lets stick 20 more lbs on the end of the crank... dont want the car to rev too quick... Oh no 20 lbs still revs too quick..lets take of the light weight aluminum balancer off and put on a heavy steel one...Ahh crap still revs to fast lets weld some metal to the pressure plate... That worked...now my car hooks and runs 13's ...neat

[93hatch]

you need a heavy flywheel to launch at 3k and pull 2.0 60's

[ryans88gt]

Originally Posted by 93mustank This is a retarded statement.... Oh no...too light..cars revving too quick..lets stick 20 more lbs on the end of the crank... dont want the car to rev too quick... Oh no 20 lbs still revs too quick..lets take of the light weight aluminum balancer off and put on a heavy steel one...A crap still revs to fast lets weld some metal to the pressure plate... That worked...now my car hooks and runs 13's ...neat

Principles of physics pwn you. all day... everyday.

the mass of the flywheel definitely effects the force available at launch. If your car is not traction limited at launch, going to a lighter flywheel will definitely hurt your times. This has been proven over and over and over at the drag strip.

If you car is traction limited, going to a lighter flywheel will help you as it will allow you to launch higher in the power band and you will put more power down all the way down the track. This also has been proven time and time again.

Anyone can make retarded absolute statements like you... but then they would be ... well... retarded.

Look for an upcoming article on Pete Epple's project shake and bake where they swap out the aluminum flywheel and light metal clutch for heavier units and improve their times significantly due to better 60' times.

[HMERacing]

Originally Posted by 93mustank This is a retarded statement.... Oh no...too light..cars revving too quick..lets stick 20 more lbs on the end of the crank... dont want the car to rev too quick... Oh no 20 lbs still revs too quick..lets take of the light weight aluminum balancer off and put on a heavy steel one...Ahh crap still revs to fast lets weld some metal to the pressure plate... That worked...now my car hooks and runs 13's ...neat

WOW, Really?

[93mustank]

Ok ryan do you run heavy flywheels?
So if i go to the track and my car bogs i need to go to a heavy steel flywheel? Hmm.. or maybe i adjust the clutch and fix the real problems... how would i benifit from a heavy flywhhel... why handicap a problem?

My car makes too much power and doesnt hook at the track.. so i put a restrictor plate on it..now it hooks

Originally Posted by ryans88gt Principles of physics pwn you. all day... everyday. the mass of the flywheel definitely effects the force available at launch. If your car is not traction limited at launch, going to a lighter flywheel will definitely hurt your times. This has been proven over and over and over at the drag strip. If you car is traction limited, going to a lighter flywheel will help you as it will allow you to launch higher in the power band and you will put more power down all the way down the track. This also has been proven time and time again. Anyone can make retarded absolute statements like you... but then they would be ... well... retarded. Look for an upcoming article on Pete Epple's project shake and bake where they swap out the aluminum flywheel and light metal clutch for heavier units and improve their times significantly due to better 60' times.

[beamer814]

okay so yes lighter is better but i need the momentum of the flywheel or i will bog thats fact. So i will be running cheater slicks running from 3.73s with aluminum drive shaft and around 300hp lets say ive got good traction and the car is not gonna just spin i will be launching at ? rpm nd so what do you guys run with good success

[EscortSportage]

Originally Posted by 93mustank This is a retarded statement.... Oh no...too light..cars revving too quick..lets stick 20 more lbs on the end of the crank... dont want the car to rev too quick... Oh no 20 lbs still revs too quick..lets take of the light weight aluminum balancer off and put on a heavy steel one...Ahh crap still revs to fast lets weld some metal to the pressure plate... That worked...now my car hooks and runs 13's ...neat

neat ...lMAFO !!!!! i love this guy

[EscortSportage]

dude if ur worring about spinning, u obviously have traction problems, to fix this would be suspension mods, chassis stiffness and tires, (weight transfer helps)

[beamer814]

Originally Posted by EscortSportage dude if ur worring about spinning, u obviously have traction problems, to fix this would be suspension mods, chassis stiffness and tires, (weight transfer helps)

not worried about it i just know wheel spin is hower ever fun really deafeating the point of trying to drag race

[JBIGBOOTSY]

Originally Posted by 93mustank Ok ryan do you run heavy flywheels? So if i go to the track and my car bogs i need to go to a heavy steel flywheel? Hmm.. or maybe i adjust the clutch and fix the real problems... how would i benifit from a heavy flywhhel... why handicap a problem? My car makes too much power and doesnt hook at the track.. so i put a restrictor plate on it..now it hooks

if you dumped your clutch at idle, then an alunimum flywheel might help. But being that youll prolly let loose around 5k-up, you will store more energy in the flywheel(same concept as torque), and at the moment of jerk, you will have more energy stored in the flywheel.

aluminum sledge hammers dont work well either.

[93mustank]

When does it stop? Then why not run a 90lb flywheel? So run a 351 main because its heavier and run a 30 lb balancer?

Originally Posted by JBIGBOOTSY if you dumped your clutch at idle, then an alunimum flywheel might help. But being that youll prolly let loose around 5k-up, you will store more energy in the flywheel(same concept as torque), and at the moment of jerk, you will have more energy stored in the flywheel. aluminum sledge hammers dont work well either.

[JBIGBOOTSY]

Originally Posted by 93mustank When does it stop? Then why not run a 90lb flywheel? So run a 351 main because its heavier and run a 30 lb balancer?

would a 1 million hp dragster be faster than a 3500hp one?

Would a 1000lb offensive lineman block better than a 400lb one? or a 50lb lineman? Your grasping...

[FastStang91Lx]

Originally Posted by JBIGBOOTSY Would a 1000lb offensive lineman block better than a 400lb one? or a 50lb lineman?

I would have to say yes a 1000 pounder would block better because he would be wider

On a side note though... assuming he could run, or even stand for that matter, his accelaration is gonna suck. I'm guessing the correct answer is going to be different for one guy vs. the next

[JBIGBOOTSY]

Originally Posted by FastStang91Lx I would have to say yes a 1000 pounder would block better because he would be wider On a side note though... assuming he could run, or even stand for that matter, his accelaration is gonna suck. I'm guessing the correct answer is going to be different for one guy vs. the next

Said blocker would not even make it on the field.

[ryans88gt]

Originally Posted by 93mustank When does it stop? Then why not run a 90lb flywheel? So run a 351 main because its heavier and run a 30 lb balancer?

Let's think about your lack of thinking here....using 2 hypothetical examples

Example 1) Say you have 0 reciprocating mass or the lightest rotating assembly possible with a mass approaching 0. You would have no momentum of inertia stored in your reciprocating mass and upon dropping the clutch, your car would not move, but rather just die, since the mass of the car would easily overtake the tiny bit of inertia stored in the rotating assembly. However, if you could successfully get the car moving, you could accelerate quickly since no power is robbed by the rotating assembly.

Example 2) You have a huge reciprocating mass that approaches infinity (1 million pound flywheel). The moment of inertia is enormous in comparison to the car. The car could never hook that much power at launch and acceleration after launch would approach zero since the engine would struggle to accelerate the rotating mass (i.e. all power is robbed).

What these 2 examples should clearly tell you is that both extremes result in failure. Fix the problem? The problem isn't clutch engagement, the problem is having a proper amount of stored inertia at launch such that you car doesn't bog (example 1) or spin but be excessively slowed by rotating mass (example 2). If you are in the correct range this can be adjusted with launch rpm. If you have too light or too heavy of a flywheel you can never fix the problem with adjusting how hard the clutch hits. There is an optimum flywheel mass. You just fail to think.


To answer you what I have used. I used a steel flywheel. I switched to an aluminum one. I had to increase my launch rpms to get the same 60 foot. My MPH was not effected by the swap. So was this a good swap? Doesn't really make a difference other than I now have to launch the car at a higher rpm. I do like the replaceable flywheel surface however.

[ryans88gt]

I can tell you that one of the most popular mods to 03/04 cobras is swapping out the aluminum flywheel for a heavy steel one to help them get off the line better.