It it's like any of the old school Army rigs I got to take a peek at, theres an air cylinder between the linkages. Could be wrong, but that's what it looked like.

~Nate

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95 Honda Shadow ACE 1100.
1999 Plymouth Neon Expresso. 2.4 swap, 10.5 to 1 comp, big cams. Autocross time attack vehicle!
2012 Escape, 'hunter" (5 sp 4cyl)