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?
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Sept. 29, 2010 9:11 p.m. 96DXCivic SuperDork
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Sept. 29, 2010 9:28 p.m. Gimp Dork
"Jacking Force"...That's what I called myself in high school.
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Sept. 29, 2010 10:09 p.m. plance1 Dork
May the Jacking Force be with you.
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Sept. 29, 2010 10:53 p.m. maddabe New Reader
In reply to Gimp:
Delta Force's backup maybe?
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Sept. 29, 2010 11:35 p.m. Wally SuperDork
I'm pretty sure he was John Force's dad
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Sept. 30, 2010 2:38 a.m. Spinout007 Dork
Oh man I just knew this thread was gonna go bad.
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Sept. 30, 2010 3:17 a.m. grafmiata Dork
96DXCivic wrote:
Depends on whether you're the driver or passenger...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?
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Sept. 30, 2010 7:58 a.m. Giant Purple Snorklewacker SuperDork
'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.
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Sept. 30, 2010 8:20 a.m. youngfg New Reader
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.
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Sept. 30, 2010 9:30 a.m. iceracer Dork
Hmm, haven't heard that term since the demise of swing axles.
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Sept. 30, 2010 9:06 p.m. Appleseed SuperDork
Its what happens when you wake up with morning wood and try to pee.
Engineers call it torque.
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Oct. 1, 2010 11:12 a.m. Slyp_Dawg Reader
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
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Oct. 1, 2010 12:05 p.m. mad_machine SuperDork
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?"
