
I made yet another version of the BullPAC. The hope was for a smaller, easier to build, and more reliable BullPAC. I think the latter two worked out.
Major changes new stuff:
*Half inch plunger rod with o-ring seal
*2" Actual ID polyester plunger tube with well sealed plumbing
*O-ring check-valve
*Recurve bow arms
*Updated Purple catch handle
Better plumbing and an o-ring check-valve:


Another variation of the Purple-catch handle. The PullSCRTs use something very similar to this.

And, recurve bow arms:

As you can see from the above comparison, it doesn't look like I've revolutionized bow power just yet. I think I can make the bow arms a bit shorter with less forward bias, and hopefully make the bow cross shorter/more compact as well. Currently each bow arm is 24 degrees off perpendicular, I think maybe 15 or 18 would be better. Ideally, I just need to stop using plumbing supplies for my bow arms.
And here's another pic just because:

I'm very happy with the consistently good performance this blaster provides. The piston system has very little friction, and seals very well. Range is slightly greater than an ESLT, which is meaningless to most people, but lets just say I've got it shooting as hard as I want it to shoot.
The priming grip kind of sucks, and will be replaced with a 1" wye as was used on earlier, similar BullPACs. I printed that one as a temporary measure.