baggedout81 wrote:

Is there some kinda lift calculator that i've missed or is there not one? Example...I'm planing on running a BOB set up on my cutlass (g-body) using a slam8's. I'm wanting to ge the bag as close the the pivot point as posibble.Now my question is i'm trying to figgure out how mutch lift i would see at the bumper.

You did not miss one,

This may sound like a complex thing to calculate but it can be easy.

We will work with a scale model for this.

Go out and measure your car such as lower link length frame length wheel placement the works.

Now do a scale that is easy like 1 foot is 1" on a piece of paper.

Now draw your car body and frame ( with bumper) Now cut out your link bar and at the pivot use a thumb tack.

Most bags on the market have about a max height of lets say 8" on the long side of the bag in an arc so 8" divided by 12" is 66% so 8" is 66% of a foot so for your scale take 66% of 1" and you get about 21/32 of an inch for the bag

NOTE: some things to keep in mind, the closer to the pivot the bag is the more force the bag is going to need to lift the car, also the stronger everything is going to need to be.

For example a bag on the axle lets say needs 1,000 lbs to lift the car that same setup but with the bag at 1/2 the bar length ( middle ) will now need 2,000 to lift the same car. 1/4 the way from the pivot it would need 3,000lbs So keep this in mind as you design.

Please post up any questions you may have, this sounds complex but once you play around with it , it will all make sense