Plums,
The Impy is much like the Bushmaster in design, so I have one question about your details on the way the solenoid is fed. You're correct that it's fed by air that's in the valve chamber, but that air should first goes through a LP reg (even stock, there should be something there to cut down the pressure), then is diverted via a very small, narrow air passage way to the solenoid. That's how the Bushy is anyhow. That way you can adjust your input pressure higher, and have more pressure in the valve chamber (thusly increasing the velocity), without blowing up your solenoid (if it doesn't work like that, then the impy suffers from a horribly stupid design, and SP needs to really go back to the drawing board and put something together that's better. Seems like it would be VERRRRY easy to blow up your solenoid with the design you described). Putting on an aftermarket LP reg, such as the Jackhammer II, would replace the stock reg (if there is one) with an adapter to screw the new LP reg into, and air pressure to the solenoid is controlled via the external reg, and is thusly much easier to adjust (and, depending on the reg chosen, possibly more stable and consistent). Cocking pressure on the Timmy, Angel, Bushy, etc, (which all use almost an identical re-cocking system), is between like 60-100 psi, and the Impulse probably isn't much different, and you'd need a good 200 or more psi input in order to get any kind of velocity out of the marker. And if that pressure is going unregulated into the solenoid, that seems like massive overkill, and again, an exceedingly ill conceived design.
The Impy is much like the Bushmaster in design, so I have one question about your details on the way the solenoid is fed. You're correct that it's fed by air that's in the valve chamber, but that air should first goes through a LP reg (even stock, there should be something there to cut down the pressure), then is diverted via a very small, narrow air passage way to the solenoid. That's how the Bushy is anyhow. That way you can adjust your input pressure higher, and have more pressure in the valve chamber (thusly increasing the velocity), without blowing up your solenoid (if it doesn't work like that, then the impy suffers from a horribly stupid design, and SP needs to really go back to the drawing board and put something together that's better. Seems like it would be VERRRRY easy to blow up your solenoid with the design you described). Putting on an aftermarket LP reg, such as the Jackhammer II, would replace the stock reg (if there is one) with an adapter to screw the new LP reg into, and air pressure to the solenoid is controlled via the external reg, and is thusly much easier to adjust (and, depending on the reg chosen, possibly more stable and consistent). Cocking pressure on the Timmy, Angel, Bushy, etc, (which all use almost an identical re-cocking system), is between like 60-100 psi, and the Impulse probably isn't much different, and you'd need a good 200 or more psi input in order to get any kind of velocity out of the marker. And if that pressure is going unregulated into the solenoid, that seems like massive overkill, and again, an exceedingly ill conceived design.
