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"drop" pitman arm?

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Old Jun 4, 2007 | 08:44 AM
  #1  
greggradwohl's Avatar
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Default "drop" pitman arm?

I asked this on another thread, but thought it might warrent its own thread.

Someone educate me:
I thought the reason to “drop” the pitman was to more closely match the angle of the front track bar/drag link. With adjustable length TB, it seems this would not be an issue.
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Old Jun 4, 2007 | 12:40 PM
  #2  
usmcdoc14's Avatar
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From: Navyland, VA
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yes and no.
A drop pitman arm is to place the drag link in a more "friendly" angle to the rest of the steering system, be it to keep the tie rods from maxing out or to prevent bump steer.

This applies to both leaf and coil suspensions with and without track/panhard bar. Just in a track/panhard bar setup you would "like" to have your track/panhard as flat as possible and your drag link to match that angle thus preventing bump steer.

An adjustable track/panhard bar will work but a dropped/lifted mount AND drop pitman arm will work better in higher lift.(because the track/panhard bar causes a non-triangulated 4/3 link to move in an arch and this can cause issues)
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Old Jun 4, 2007 | 12:58 PM
  #3  
wayoflife's Avatar
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From: Laguna Niguel, CA
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Originally Posted by usmcdoc14
yes and no.
A drop pitman arm is to place the drag link in a more "friendly" angle to the rest of the steering system, be it to keep the tie rods from maxing out or to prevent bump steer.

This applies to both leaf and coil suspensions with and without track/panhard bar. Just in a track/panhard bar setup you would "like" to have your track/panhard as flat as possible and your drag link to match that angle thus preventing bump steer.

An adjustable track/panhard bar will work but a dropped/lifted mount AND drop pitman arm will work better in higher lift.(because the track/panhard bar causes a non-triangulated 4/3 link to move in an arch and this can cause issues)
What he said - great answer!
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