Here's one I'm especially proud of and is modded all over, doing 12fpe at 15 pumps.
Jim Gillilan's Custom 1322 Carbine w/Custom Stock
Stock is Teak from Thailand and super light weight 1322 Carbine!
Sure you could - Provided you choose a short enough initial linear stroke. August 6 2012 at 2:45 PM Steve in NC (Login pneuguy) Crosman Forum Member from IP address 188.8.131.52 Response to At twice the piston area, I don't think I could get the handle pushed in. n/t
With your piston area of 0.83sq_in, you'd get 25lbs of force at a pressure 30psig, which is a compression ratio of 3:1, or an initial stroke of about 5.67".
So possible geometry would be: 5.67" of linear stroke, followed by 2.83" of lever-assisted stroke, for a 3:1 improvement in leverage and mechanical advantage. Steve Responses
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