I was just curious about what fly wheel people are using as far as weight? I've been reading about how light weight crank pulleys can cause damage cause of balance. i was wondering the same thing about light weight fly wheels.

 

8lb Cryogenic fidanza flywheel

 

u rev alot faster.. with a lighter flywheel... but i run a 12lb flywheel and i love it.. i think that for a turbo car... you should not go any lighter.. but that is what i personal think.. but there are many more people on here that have more knowledge about these things..

 

flywheels do not have a harmonic balancer, so they don't ubsorb vibrations like a crank pulley does.. so as long as the lightened flywheel is balanced properly (it should be), than you will have no worries.

I ran a streetlite from act in my talon..

 

8.xlb on my turbo H22

 

The one thing to remember with a flywheel is that it stores inertia while rotating at high rpms. It carries motion (energy) through the higher rpms and gives more rotating mass; therefore, during higher load situations, you have more energy to carry you through. This comes at the expense of parasitic loss while trying to get it moving in the first place.

The best way to think of it is by comparing a light and heavy flywheel to a beach ball and a bowling ball. It takes more energy to get the bowling ball rolling and takes equally as much to slow it down again (neglecting friction) while the beach ball takes less to accelerate and decelerate.

 

Wich brings us to the next question, how light is too light....


I think of it as, a heavier flywheel will help in the beginning of the next gear (when you up shift) but at the expense of acceleration through out the gear...

someone correct me if I'm wrong.

 

That depends on the setup and use. I went with an 11lb fly on my GSR and i like it on the street. It also holds power through to redline, but that has more to do with the setup than the flywheel..

 

i like stock flywheels , if you drag racing using 2step the motor allready spun up before you leave and the car tends to stay spooled better between shifts

i tried 11lb flywheel before

 

thanks for your help guys.

 

CC twin disk

 

That's a great suggestion, but up there in the price range. I guess you're just too baller for me

 

i am going with the stage 4 competition clutch twin disc. i didn't know if i should stick with the stock fly wheel or go with a 12lb.

 

LOL the twin disk comes with a fly wheel that you have to use WITH the clutch....

if you truly are running a twin disk you dont need to change the fly wheel but if your running a stage 4 which is a single disk...you need a fly wheel