minipump v3.5

Just build a cannon and want to show it off? Post it in here.

Postby clide » Wed Feb 23, 2005 1:05 am

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.

<a href="">Right</a>
<a href="">Left</a>
<a href="">Front</a>
<a href="">Extended</a>
<a href="">Ammo</a>

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.
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Postby exploration » Wed Feb 23, 2005 1:16 am

cool cannon looks very good. Can it realy put Tic Tacs in to a dry wall? if so put a pic of that up
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Postby clide » Wed Feb 23, 2005 1:59 am

Yeah, just enough to stick though, and they have to hit right or else they just bounce off and make a dent. <a href="">PIC</a> And you can see some other attempts in there where it just left a dent.

When they hit a solid wall, like brick the Tic Tacs burst into tiny pieces and it leaves a bump made of Tic Tac powder on the surface. I tried to get a pic of that too, but it didn't turn out very well.
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Postby Mr.Plow » Wed Feb 23, 2005 2:15 am

Nice job, clide! Great design, and quite a looker too!;)
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Postby plasticex009 » Wed Feb 23, 2005 2:27 am

Does it have a trigger mechanism so you can control when if fires? BTW, it looks great.
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Postby theexp » Wed Feb 23, 2005 7:32 am

Real clean gun, I like the paint job.
Cool design, i might make one...
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Postby Jspellman » Wed Feb 23, 2005 3:34 pm

looks awesome! Does the tic tack just stick oout of the end of the "barrel" like shown in one of the pics, or does it sit at the breech of the barrel?
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Postby BillyBobJoe » Wed Feb 23, 2005 3:42 pm

Thats awesome!! What are you using as the barrel?
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Postby clide » Wed Feb 23, 2005 4:38 pm

Barrel is 5/16" OD aluminum tubing that I found at my local Ace. Nearly all the Tic Tacs will slide down with gravity. Occationally a bigger one will come along. If I pull the pump out really fast it will usually suck it down. So yes they sit at the breach Jspellman, just have it at the muzzle to show how they fit.

The trigger is the pump itself. In the last quarter inch or so of the storke the pump head will pass the port you can see with the hose running from it. Once it does that the pilot is exhasuted through that hole. So you can pull the pump down most of the way, get your aim and then pull it the last bit to fire.
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Postby syco kilaa » Wed Feb 23, 2005 11:19 pm

wow, now that is very ongenious, I bow down to your smartness.. And I like how you just wrapped the whole thing up in electical tape, do you think in the future sometime could you possibly add a top gravity feed clip to it? that way you could just pump away and it would sort of be like a semi auto.
syco kilaa
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