how much torque loss with aluminum flywheel

[mropus]

im going to put in a mcleod rxt clutch and was thinking about the aluminum flywheel they offer, i know there is a trade of in rotating mass, torque vs hp. so how much torque do you think you lose with the much lighter aluminum flywheel?

[upflying]

Here you go.
http://physics.bu.edu/~duffy/py105/Torque.html
http://en.wikipedia.org/wiki/Torque
http://hyperphysics.phy-astr.gsu.edu/hbase/mi.html

[Falundir]

Originally Posted by upflying

Here you go.
http://physics.bu.edu/~duffy/py105/Torque.html
http://en.wikipedia.org/wiki/Torque
http://hyperphysics.phy-astr.gsu.edu/hbase/mi.html

You would have received bonus points if you included the weight of the flywheel in its stock form and for the rxt...

[Synner]

You won't lose power, you lose inertia of the flywheel itself making it a bit tougher to drive. The car will accelerate faster but be tougher to drive at low speeds if you're not used to it and know how to manage the clutch. It will feel similar to too low of an idle and wanting to stall before recovering if you're not careful. If you do stop and go traffic a lot get the steel one.

[Norm Peterson]

A heavy flywheel represents stored rotational momentum. As you engage the clutch and engine rpms drop, this momentum briefly becomes some amount of torque that adds to whatever the engine is making at that point. I say "briefly" here, because as soon as the clutch and the tires hook up, it's gone. Zip, zilch, nada. But starting at that moment the flywheel bleeds off sending engine torque you'd rather send to the wheels.

It's kind of a balancing act, particularly for you straight line guys, and perhaps to a lesser extent for street driving.

The engine always developed the same amount of torque. You just borrow from and pay back the flywheel.


Norm