60mm M2 Mortar

[biged]

The AP2 mortar appears to be a very simple ball valve gun.

Judging from the picture and the description:
A length of 18" long 3/4 inch pipe with a cap on the end. A 3/4" to 3/4" with a 1/8th NPT Tee-connection to a 1/8th inch HP 1200+ psi hose and paintball tank fill adaptor.
The 3/4 Tee has a 3/4" x 2" nipple and is connected to a 3/4" ball valve then (2) 90 degree fittings connected with short 3/4" x 2" nipples. Then a 3/4" to 1.5" adapter and then a 1.5" to 3" adapter, then a length of 3" barrel.

Valve speed is critical, otherwise the gun will not perform well at all. You want a valve to open in as little milliseconds as possible.
A ball valve gun is a good start though.

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[biged]

I replaced the little .75 irrigation valve with a 1.5" valve.

The ASCO valve has a built in mini 5/8" valve to vent it's pilot volume. Adding a blowgun was plug and play.
I capped the other .75 valve connector that shoots smoke grenades for now. Equalizing the pressure for 2 irrigation valves is slow. (Air pressure must be slowly added to the chamber otherwise the valves will honk.) I will eventually add a ball valve to turn the smaller valve on and off preventing the honking.

I also replaced swapped barrel with a 6-footer.


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[biged]

Picture of it at VN event. PRC25, ammo can, 1 gallon pump sprayer, 20 lbs CO2 tank, 5 gallon bucket of beans & peas, butt pack on GP strap hanging, and drinking water. There is about 250+ lbs of weight in the cart.
I came back with 6 tennis balls at the end of the day. Shot 60+ balls and 30+ water balloons.



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[biged]

Picture of it at the Mignano Gap event in Amsterdam, NY, July 19th, 2008.



Next up is procure era style bucket, and facades for the pump sprayer and CO2 tank.

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[101starmyairborne]

Pure Allies Ingenuity. Nice

[wclracer64]

Do you have any measured drawings or blue prints we can get?