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Measure Axle Centerline

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6. With the new shackle reversal installed along with the Old Man Emu Nitro Charger shocks, we again measured the axle centerline movement and marked it on the fender (one benefit of an old project truck is that we can write notes right on the body). As expected, we found that the axle now moves forward as it droops and backward as it compresses. Shackle reversals often require a long-travel front driveshaft because the axle now has more travel than before.

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