NJFBOA - Home of New Jersey's Camaros and Firebirds - View Single Post

alamantia · 04-21-2009, 04:27 PM

rotational force is applied to axles thru the carrier. That doesnt push the carrier back, it just rotates the axles.

The force of the tires pushing the car forward is exerted on the axle bearings which are in line with the lower control arms. If the axle bearings are in line with the lower control arms that is the point of fulcrum. As indicated in that link. by "X" as zero there is no thrust pushing the carrier back.

Think of the LCA location in relitivity to the axle bearing as the piviot point of a see-saw. If the LCA is exactly 1/2 the distance between the carrier and the axle bearing an even load would be dispursed between the axle bearing thrusting forward and the carrier going backwards. If you were 300lbs sitting on one side of the see-saw and someone was only 100 lbs sitting on the other side, that person would always be in the air because 300 lbs is evenly exerted on the other side of the fulcrom point because its directly in the middle. Now picture a see-saw with the fulcrom point directly under the 300 lbs person, there would be no way you could get that 100lbs person in the air, all the force exerted by the 300 person would be directly upon the fulcrom point thus not exerting any force at the other end of the sea saw there would be no way you could get a 30 lbs person in the air.

The location of the LCA's determins which entities force is applied to and what percentage.

04-21-2009, 04:27 PM	#28
alamantia Join Date: May 2006 Location: Midland Park, NJ Posts: 1,389 iTrader: (7)	rotational force is applied to axles thru the carrier. That doesnt push the carrier back, it just rotates the axles. The force of the tires pushing the car forward is exerted on the axle bearings which are in line with the lower control arms. If the axle bearings are in line with the lower control arms that is the point of fulcrum. As indicated in that link. by "X" as zero there is no thrust pushing the carrier back. Think of the LCA location in relitivity to the axle bearing as the piviot point of a see-saw. If the LCA is exactly 1/2 the distance between the carrier and the axle bearing an even load would be dispursed between the axle bearing thrusting forward and the carrier going backwards. If you were 300lbs sitting on one side of the see-saw and someone was only 100 lbs sitting on the other side, that person would always be in the air because 300 lbs is evenly exerted on the other side of the fulcrom point because its directly in the middle. Now picture a see-saw with the fulcrom point directly under the 300 lbs person, there would be no way you could get that 100lbs person in the air, all the force exerted by the 300 person would be directly upon the fulcrom point thus not exerting any force at the other end of the sea saw there would be no way you could get a 30 lbs person in the air. The location of the LCA's determins which entities force is applied to and what percentage. Last edited by alamantia; 04-21-2009 at 04:29 PM.