Why Twin Stick

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X2. Much better engagement. And to elaborate a bit, when going to Low mode using a twin stick, the motions of both sticks are fore/aft only, no more shifting the stick towards the passenger. For me, this was beneficial becasue I have a SB350 transplant with a Marks Adapter. The drivetrain had shifted slightly (~0.250") to the passengers side, and thus the inboard outboard motion of the stock transfer case linkage was clashing with the transmission hump cover. The fore/aft engagement relieved that clash.

The stock linkage is a Rube Goldberg contraption....
http://i65.photobucket.com/albums/h218/FJ80/New Mexico 4WD/FJ40/IMG_0676.jpg

Twin sticks provide a straight, direct linkage to both the shift points on a single case, making a much more positive engagement/disengagement. They totally fixed my Orion shifting problem.
 
This is on the early Land Cruisers. Up until 68 model the high low lever was on the front of the dash and the pin bolts thru it. Then until 73 model when vacuum shifter was gone in the US market it was on the lever high low lever under the dash. With the 88 model FJ62 vacuum shifter was back. When the transfer switched to low range a switch makes and electric solenoid activates the 4WD. Possible the way it worked past 73 in other markets that still had the vacuum shifter.
 
My passengers got tired of shin bruises. Duallies are smoother shifting and thus easier to get the air locker to release in certain tight situations in order to steer. Un-belting and getting out to unlock the hubs is far from what I want to be doing.
 
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