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Old 02-01-2013, 02:46 PM   #11 (permalink)
Miembro de MCB
alkafluence's Avatar
Join Date: Jul 2008
Location: The District

I wonder how they've solved the unbalanced drag in the lower tube on the lower tube "valve" while it is moving forward and back. This would be caused by the additional drag of having the bolt pin insert downwards into the lower tube. Basically the lower valve tube is pulling the upper bolt along for the ride.
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