Quote:
Originally Posted by tf95ZR1
What about us top end (Mile) guys?
I have heard a heavier flywheel has
more momentum/inertia available at
high RPM that acts like more torque.
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Just the opposite...*
Newton's First Law of Motion: A body at rest tends to stay at rest, and a body in motion tends to stay in motion (unless an external force acts upon it).
Essentially, a flywheel resists changes in rotational velocity. And, the heavier it is, the more force required to act upon it.
Acceleration = Force/MASS
So,
as the mass of the flywheel is increased, the acceleration must decrease, if the Force engine torque remains the same.
*IF there were a hill to climb at the end of the mile, a hill (gravity) that would, when combined with the air and mechanical resistances, overcome the power produced by the engine, causing it to decelerate, the flywheel would tend to
resist that change in momentum caused by the slowing - and would continue to assist the motor as long as the rotational velocity was slowing.
Back in my modified "stock" (dirt track) racing days, we'd run without any flywheel - the crank was coupled directly to the drive line "in and out" box, thus eliminating any lag between the engine and the wheels!
The cars were push stared, and when in the pits (transmission disengaged) they would idle at around 2000+ rpm until the switch was turned off. The motors would stop instantly - going from 2000+ rpm to zero at the snap of a finger. BUT! When you dropped the green flag and hammered the gas, 100% of the engine's torque went to the differential, and NOTHING was lost by spinning up the mass of a flywheel.
Quote:
Originally Posted by tf95ZR1
What would be the difference between a
single mass & dual mass of the same weight?
I think dual mass just dampens the vibration more?
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Although they may both be of the same weight, the dual mass is divided into two discs, coupled by springs and friction surfaces. This tends to dampen and absorb shock and vibration that would be transferred to the transmission from the engine better than the single mass will.