That's a great article. I seem to imply from it that PSI isn't the most important factor in power and range. Consider the SS 300, it has a 3/4" pump and yet is capable of shooting up to 50 ft. So with that in mind, I shouldn't have to worry about my Gorgon's range dropping if I up the pump size to 3/4".
The stock pump stroke is 6 and 3/8" long. I measured this by disassembling the blaster and then actually measuring how far the pump moved. It provides about 25 ml per stroke, which comes out to 3.921ml per in for the 1/2" stock pump. Does anyone have the formula for predicting how much water a 3/4" pump would move? I currently do not have a stock blaster with a 3/4" pump on hand to test.
It would be easier for me to just lengthen the stock 1/2" pump, but I don't think it would be worth it vs the gains I could make with a 3/4" pump. Making the pump longer would just make the gun more awkward. I did some testing and figure that I could add about 2.5" more to the 1/2" pump, before the gun starts getting more awkward to pump/use. 2.5" length gain would give me an overall pump volume of about 35ml or about 1.18oz/pump. This would be comparable to the pumps featured on the XP 110/XP 310. Here are some stats to consider for larger pumps on AP blasters: SS 300 89ml, XP 150 82ml, , XXP 275/250 68ml, XP 105 60ml
With a stock PC capacity of 17 oz/503ml it takes about 20 pumps to pressurize, adding 2.5" would in theory bring this number down to 14 pumps, but replacing the pump with one comparable to the 150's would bring the number down all the way to 7. Another way to look at it is how many shots can you get between pumps. After doing some simple calculations I'm getting a 29% increase in shots or shot time per pump with a 2.5" extension, and 330% increase with a pump replacement. The first would be a good improvement in combat performance, the second would be huge. I'm looking into transparent nylon tubes for the replacement or extension. I love the idea of being able to see the water being pumped. I may go with a clear tube, or I may go with an orange, yellow, or cyan tube.