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Ask A Pro \  instant center

instant center

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rizz0   +1y
whats the formula for calculating instant center??????
NIGHTMARE73   +1y
STICK BOTH ARMS OUT AS FAR AS YOU CAN , YOUR NOSE IS INSTANT CENTER !! LMAO !!
OK I HAVE NO CLUE WHAT INSTANT CENTER IS .... SORRY CAN ONLY MAKE A JOKE COULDNT HELP YOU !
NIGHTMARE73   +1y
OK I HAD TO LOOK IT UP ! HERES A WEB SITE THAT GETS ALL INTO IT ! I GOT BORED AFTER THE 1ST TWO LINES !! LOL

Instant Center

All vehicles have a specific point around which the entire car will balance called the center of gravity (CG). For most domestic front-engine, rear-drive cars, the CG is generally located forward of the mid-point of the car at around camshaft height off the ground. While all rear suspensions pivot around a given point, this is not necessarily the point at which the rear suspension applies power or lift. Suspension engineers call this lift point the instant center (IC). Different suspensions place this IC at different positions in the car. Because suspension components tend to shift as the body lifts or squats, this position is dynamic, meaning that it moves as the car pitches or rolls. One definition of IC is the unseen center of an arc created by the moving suspension links. The simplest instant center is a drag race ladder bar. The forward mounting point for the ladder bar where it hooks to the chassis also happens to be its instant center. With other rear-suspension designs, the instant center is an imaginary point in space

http://www.speed-wiz.com/calculations/suspension/index.htm
rizz0   +1y
yea i know what instant center is and have read up on its effect on how the suspension works just wondering what the formula would be to find the instant center of link bars
tlw32882   +1y
http://www.streetsourcemag.com/forum/topic.aspx?method=reply&topic_id=85853

if you cant figure out instant center after reading this link than i would say your doomed and will never get it. wether or not there is a formula i have no clue haha. hope this helps
msturg   +1y
nobody I know of actually uses an actual formula, as in plug in lengths and angles and then pop out dimensions. It is all done mostly with scale drawings or use a design program if it is available to you like autocad
BioMax   +1y
There isn't any reason to find out exactly where your i.c. is unless you are trying to build a racecar. As long as it is in a general vacinity, you should be fine.
maz duh   +1y
Masking tape on the shop floor always works for me. I just measure the points out 1:1 and run some tape to see where it is and adjust as needed.
rizz0   +1y
masking tape on the floor is a good idea thanks maz duh
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