TenMillimaster
Member
Ok so I'm going to quote what I said in another post in the autoloader subforum ( http://www.thehighroad.org/showthread.php?t=487026 ) because I don't want to derail that thread. The repost of this video http://youtu.be/D7stLQvsDX8 (let's talk about the why-this-works and the how could-it-work-for everyone, and not if he's really doing it or not), has got me thinking- what makes cocking with inertia easier? Harder?
I think I did the physics and math right, but I haven't received any calculus based physics education, so bear with me where I assume force can be gotten from momentum.
Tenmillimaster:
All this brain scratching aside, I'd love it if someone opted to make their slide super heavy for a bit to see if it makes cocking with inertia easier. Clamp lead weight on the end or something, see if it'll chamber a round. Maybe this will convince us all that cocking with inertia is possible. Or not? An educated guess is better than just an opinion.
I think I did the physics and math right, but I haven't received any calculus based physics education, so bear with me where I assume force can be gotten from momentum.
Tenmillimaster:
it's just an application of momentum.
(mass of slide+mass of frame)velocity backward = (mass of slide)velocity of the slide cocking movement -(mass of frame)Velocity forwards.
A little math rearrangement: V_slide initial -(mass of frame/mass of slide){(V_slide initial) - (V_frame final)}=V_slide final
This tells me that a heavier frame makes cocking the weapon like this difficult, and a heavier slide makes cocking the weapon easier (which I think explains why it's easy to do on Hipoints, which delay their blowback through sheer slide mass).
Whether or not the slide opens is a question of forces, not momentum... if the derivative of the equation (or better yet, a rearranged version of it) above is taken with respect to time (velocity is meters per second, and the derivative of that is acceleration... so F=ma.
Umm... my minimal physics knowledge doesn't tell me where to go from here.
Is it this force being greater than spring force+friction that cocks the gun?
or when sufficient work is done by this force to equal the work required to cock the gun, counteract friction and work done by the spring force...
All this brain scratching aside, I'd love it if someone opted to make their slide super heavy for a bit to see if it makes cocking with inertia easier. Clamp lead weight on the end or something, see if it'll chamber a round. Maybe this will convince us all that cocking with inertia is possible. Or not? An educated guess is better than just an opinion.
Last edited: