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3rd rear shock?

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Old 03-25-2014, 10:50 AM
helirich helirich is offline
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3rd rear shock?

I saw a third shock on the rear of a explorer. It is sideways. Does anyone know what it's for? Sway, axle rap, torque steer?

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Old 03-25-2014, 02:32 PM
85e150six4mtod 85e150six4mtod is online now
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That is on a much older Explorer with a live axle. Later models have IRS and do not have that shock. It is an "axle damper" designed to limit lateral axle movement. Some report no difference without it, some claim improved results after installing a new one.
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Old 03-28-2014, 10:14 AM
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Dogwood36322 Dogwood36322 is offline
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That picture is not a live axle.
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Old 03-29-2014, 12:10 AM
85e150six4mtod 85e150six4mtod is online now
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Looks like one to me, hung on leaf springs.

It is not IRS, it has a center diff section that looks like a Ford 8.8, an axle tube clamped to a leaf spring.....what do you think it is if it isn't a live axle?
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Old 03-31-2014, 08:18 PM
helirich helirich is offline
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It's a live axle. I still don't see what it does. How does the axle move lateral on leafs?
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90' Bronco, 351, MSD Ign., SS 3" exhaust,
38" x 15.50 R15 Dirt Grips, 14" x 15" Alcoa wheels
6" lift w/ cutout flares, 40 gal. fuel tank
F diff - lockright locker, 4.88's
R diff - Powertrax locker, 4.88's
Cast diff cover w/ carrier braces
Rear full float axles, truss, Above spring traction bars
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Old 03-31-2014, 09:10 PM
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Lots of ability to move laterally on leaf springs. Some rubber bushings here, a little flex there, you can get plenty of movement. Has to be that way, otherwise you'd be breaking things all the time.
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Old 04-02-2014, 05:27 PM
PupnDuck PupnDuck is offline
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Quote:
Originally Posted by 85e150six4mtod View Post
That is on a much older Explorer with a live axle. Later models have IRS and do not have that shock. It is an "axle damper" designed to limit lateral axle movement. Some report no difference without it, some claim improved results after installing a new one.
Shocks don't "limit" the movement of anything. If they did your ride wouldn't ride so well and you'd be replacing a lot of broken shocks. They absorb energy and convert it to heat and in so doing they "damp" motion.
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Old 04-02-2014, 11:31 PM
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Shocks limit suspension travel in many vehicles. The limit of full shock extension is the limit of suspension travel. I found this out with our '66 wagon when the coil spring conked me in the head after I removed a shock.

As for the lateral movement, the shock is a damper, limiting oscillation. Regular shocks do the same thing, in the manner you describe.
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