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Old 02-22-2010, 09:45 PM
Gun 4 Fun Gun 4 Fun is offline
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Technically the part that swings out is the crane. The part of the crane assembly that the cylinder rides on is the yoke barrel, which ties (or yokes) the cylinder to the crane.

I have never heard a term officially ascribed to the upright part of the frame other than "frame" or crane recess.
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