Ok so I understand how to calculate the jacking force and what it does. But how do you know when the jacking force is going to majorly effect the performance of the vehicle?
Ok so I understand how to calculate the jacking force and what it does. But how do you know when the jacking force is going to majorly effect the performance of the vehicle?
"Jacking Force"...That's what I called myself in high school.
May the Jacking Force be with you.
In reply to Gimp:
Delta Force's backup maybe?
I'm pretty sure he was John Force's dad
Oh man I just knew this thread was gonna go bad. 
96DXCivic wrote: Ok so I understand how to calculate the jacking force and what it does. But how do you know when the jacking force is going to majorly effect the performance of the vehicle?
Depends on whether you're the driver or passenger...
'cmon... with a subject line like that... were you really expecting serious answers?
I have an idea of how it relates to the overall picture but I'll wait until someone with a better grasp answers using actual facts before I toss anything based on my own speculation into the ring.
It's worst when it's different front to rear. For example a stock Mustang that has been lowered. The front roll center goes underground, so you have a negative jacking force, therefore reducing front roll stiffness as cornering forces go up. The rear roll center goes up to about 13" above the ground, causing large positive jacking forces, increasing rear roll stiffness as cornering forces go up. This causes the snap oversteer that is so common to Mustangs. So the more different your front and rear geometric anti-rolls are the harder it will be to balance the car. If you get the car to handle neutrally by changing springs, bars, ect., and the cornering forces change, say by running on a different surface, the geometric anti's change and your balance goes off.
Hmm, haven't heard that term since the demise of swing axles.
Its what happens when you wake up with morning wood and try to pee.
Engineers call it torque.
Appleseed wrote: Its what happens when you wake up with morning wood and try to pee. Engineers call it torque.
and jacking forces are exceedingly high if your feet slip as a result and you break the lid to your toilet tank with your face 
Appleseed wrote: Its what happens when you wake up with morning wood and try to pee. Engineers call it torque.
I nominate this for "say what?"
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