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Re: Flow control?
In 2008, 1075 came up with a pneumatically driven firing mechanism that involved 3x1.5" bore cylinders, fed from independent valves (switched together in software), that pulled a block and tackle pulley system to move a carriage along a rail (and into a hard stop at the top).
While not as simple as "punch ball with pneumatic cylinder", strictly speaking, it WAS firing the trackball using pneumatic power. IIRC there was also elastic power coming from the surgical tubing to assist the pneumatic cylinders in the "firing" direction (which the cylinders would then stretch to reload for the next shot).
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