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For example, at peak pressure (just before piston bounce occurs), there's about a ton of force acting on a springer piston.
Hi,For example, at peak pressure (just before piston bounce occurs), there's about a ton of force acting on a springer piston.
So, unless Ged has his powerplant in almost perfect balance, much of that force (many times larger than the force required to cock the slave mainspring) may get transferred to the cable between the pistons.
Possible result: Short (maybe only one shot short!) cable life.
guarantee that his pistons were precisely the same mass and the springs were precisely the same force value. He could never guarantee that friction would ever be equal between the moving components. Where uneven friction, even from shot to shot, would be present a condition where the moving components behaved as though they were of unequal mass and force. Which, of course, would manifest the scenario which you describe....if they annoy you. But here's an example of what I'm thinking of.
If we pretend that this sketch of mine roughly represents your design, imagine what will happen if the two springs have equal force, but the left (master) piston is (even slightly) lighter than the right (slave) piston.
When the gun is fired, the master - because of its light weight - would accelerate forward faster than the slave, allowing the cable to go slack. But then, at piston bounce, that same light weight would cause it to stop sooner and then accelerate backward faster, extending the slack cable.
Under these - hypothetical but still plausible - conditions, what would happen if the cable suddenly goes (i.e., snaps violently) taut?