Thanks for the information. Im working on a design that delivers slightly more psi. I hoping for around 70 because i will be using an electric pump probably, unless i find a good hand pump to use, but i doubt a hand pump could deliver that psi.
i wouldn't try to go any higher than 30-40 PSI with a hand pump. first off, it tends to become very hard to pump, and also your goal of 70 psi would break the check valve on most hand pumps. instead of going to an electric pump to get 70 psi, why not just increase your tank volume and make sure you have a nice long barrel on the gun? besides, 70 psi is a waste of effort if you are using a hose sprayer as a valve...too much of the pressure will disperse to make going that high worth while. now, if you've got a solenoid valve, then 70+ is understandable because the valve is open for such a short amount of time, you aren't leaking a whole lot. regardless of whether you use a solenoid or a hose handle, i'd stay away from an electric pump. the homemade i created using one was too much of a hassle. i mean, i could shoot a double weighted dart over two or three houses with it, but it had the tendency to break things (i'm sure people would be included), and took too long to re-pressurizie. Given that you want to shoot people with this gun - i'd highly recommend sticking with human-generated pressure (ie, bike pump).
Edited by rawray7, 27 October 2004 - 08:29 PM.
You, nerfboi, are the suckest gun. -neonerfer