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Jim Gillilan's Custom 1322 Carbine

Jim Gillilan's Custom 1322 Carbine w/Custom Stock

Here's one I'm especially proud of and is modded all over, doing 12fpe at 15 pumps.
Stock is Teak from Thailand and super light weight 1322 Carbine!

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Stipulation #1 makes it true. To keep a constant stroke while increasing the B/A ratio...

April 19 2017 at 6:28 PM

Steve in NC  (Login pneuguy)
Crosman Forum Member
from IP address

Response to In that case the reasoning in #2 is not true

...the total length must increase. Contrarywise, if B/A is increased while holding B+A constant, which is necessary if pumping efforts are to be comparable, stroke must decrease -- as graphed below. Agreed?

[linked image]

If so, I'd be happy to move forward and further discuss the significance of that fact as it affects practical tradeoffs in optimizing pump geometry.

This message has been edited by pneuguy from IP address on Apr 20, 2017 10:48 AM

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