Yeah I know most of you guys have seen my previous versions, and this on isn't much different from the last, but I really like how it turned out and I have yet to make a post in the Finished cannon, so here it is.
Just as with my previous versions it is a single stroke hand pump gun that fires at the end of the stroke. This one generates about 65 psi by my calculations, so it is pretty tough towards the end of the stroke. Fires the .49g Tic Tacs at around 320 fps. They will go completely through an empty box (4 layers of cardboard) or stick in drywall. Not too shabby for a single pump IMO.
Improvements over the last version:
o Improved pump piston to threaded rod connection so it wont leak
o Cleaned up the overall look a bit, no visable threaded rod, less obvious fittings.
o Made handles more comfortable by making them consistant in size.
o Enclosed barrel for higher durabilty
o Satin black paint (looks much better than normal black)
o Compression fitting on back for less wear on the hose when removing back connection.
o More consistant return spring
I think thats about it. I still plan on putting a pump stop and vent holes for the extened pump position. But that will mearly be a completion of the current version, not a new one. As of now I dont really have ideas for the next version. Maybe a magazine for semi auto operation and/or a laser sight (because you can't see where you are aiming very easily) but I am undecided. For now I am going to make this version as gifts for friends, I feel it is worthy.