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Old 09-14-2020, 12:12 PM   #9
Jack Shaft
Senior Member
 
Join Date: Dec 2019
Posts: 1,023
Default Re: counter weights are they needed?

Counterweights reduce torsional vibration,a cause of main bearing failure.Ask yourself what you aim is for the car? Highway speed touring? Then yes counterweights..hill climb short burst 'barhopper' banger? Dynamic balance is good,the lighter crankshaft spools up quicker.

During A engine design Mr Ford felt the heavy flywheel dampened impulse,his engineers 'argued' for a heavier crankshaft,the 'new and improved model b came with a heavier,then counterbalanced crankshaft.

Mechanical brakes and spur gears make it a model a..
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