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10-17-2018, 11:23 AM | #1 |
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Location: Granite City, Illinois
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Rear axle thrust angle-55 Ford
The main purpose of this is to eliminate front wheel shimmy. The front end alignment cannot be achieved properly due to rear axle thrust angle mis-alignment. Here is a sketch showing diagonal frame measurements (Frame squareness).
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10-17-2018, 11:29 AM | #2 |
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Location: Granite City, Illinois
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Re: Rear axle thrust angle-55 Ford
Here is a sketch showing diagonal measurements between rear brakeplates and front of frame. Notice that they have 7/8 inch shim stack on the front driver side upper control arm bar, while on the passenger side they have no shims at all at the front adjustment. Doing this aims both the front spindles toward the left.
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10-17-2018, 11:31 AM | #3 |
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Re: Rear axle thrust angle-55 Ford
Anybody have any suggestions as to how to adjust the rear axle to reduce the offset ?
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10-17-2018, 03:59 PM | #4 |
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Location: Northern AZ
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Re: Rear axle thrust angle-55 Ford
This kinda came to mind . . . has the car ever been hit and repaired?
also Have you tried evening up the number of shims and re-aligning? |
10-17-2018, 04:18 PM | #5 | |
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Re: Rear axle thrust angle-55 Ford
Quote:
I don't have a 55/56 frame diagram but what you have seems within tolerance(s). What kind of shimmy are you fighting?
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10-17-2018, 05:35 PM | #6 |
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Re: Rear axle thrust angle-55 Ford
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If you loosen the 4 large U-bolts from the axle to under the springs there may be a very slight amount of movement available to hopefully get the rear axle closer to square with the car than it currently is. |
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