i have heard that a lighter fly will give you more horse power and less torque and that a heavier fly wheel will give you more torque and less horse power is this true

 

HAHAHAHAHAHAHHAHHAHHAHHAHAHA...................

 

haha.

You should have asked a question about divine predestination. We could have come up with an answer faster!

No but seriously. Just flip a coin. This could get argued all day. My opinion is just go with whatever you already have or is cheaper.

 

Lighter wont give you more hp, but will allow the motor to "spool" or rev quicker. It can stall easier though. A heavier flywheel will allow the motor to chug along without stalling at low rpms (why offroad dirtbikers add flywheel weights to avoid stalling). The extra weight will take longer to rev up though.


Modified by gator88 at 10:34 AM 2/4/2008

 

I am going to put a couple of cents in here. A lighter flywheel makes no power at all. It will free up some power that otherwise would have been used to turn the extra mass on the flywheel.

Also, horsepower and torque are mathmatically connected. You generate the horsepower number from a mathmatical equation using torque. So you cannot gain or lose horsepower without gaining or losing torque, unless you add another variable... like RPM.

Horsepower=(Torque*RPM)/5250

Ever notice how all dyno graphs cross at 5250?

 

 

yea you know a weighted flywheel isn't important whatsoever for an externally balanced motor oh lord

 

what

 

myth busted helps save gas though

 

CAN SOMEONE PLEASE LOCK THIS?!

 

can i resurface a 7lbs or 5 pounds fly wheel...would it be the same or better..???

 

no. don't make something thats brittle thinner. formula for disaster. and trust me, you do NOT want to see what happens when a flywheel grenades.

 

My opinion is this.. NA engine is better on lightened flywheel... Boosted engine is better on oem flywheel... just me experience... which doesn't count for squat.... this is a very heated debate....

 

I love how people come up with some of this stuff.

No really, I kinda laugh, as part of me dies inside.

 

if you are referring to my post, it isnt made up but proven fact in the motorcycle racing world. yes, apples and oranges but still the same deal, its a motor.

 

it is weight reduction, pure and simple. physics dictate how the motor will behave. it will be fast to rev, and quick to slow down, if that makes sense. i see no downside in our cars...i want the lightest, most dependable flywheel possible

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gator88 &raquo;</TD></TR><TR><TD CLASS="quote">if you are referring to my post, it isnt made up but proven fact in the motorcycle racing world. yes, apples and oranges but still the same deal, its a motor.</TD></TR></TABLE> You no, you can tell your butt hole from a desk lamp.

 

if dirtbikes have heavier flywheels... then why does my bike rev from idle to 11 grand in less then 1 second?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EFstyle &raquo;</TD></TR><TR><TD CLASS="quote">if dirtbikes have heavier flywheels... then why does my bike rev from idle to 11 grand in less then 1 second? </TD></TR></TABLE>


i dont think you understood his statement.

your dirtbike flywheel is light in relation to a car flywheel, especially with the power it puts out compared to a car.


he said that some dirtbike racers add weights to their stock flywheel to prevent stalling at low RPM. with more rotational mass, it takes longer for the engine to slow down to a stop.

 

yea.... look at the flywheel on a v-twin anything. son of a bitch has to keep that motor going along time before the next power event.