SpudFiles

ERG_SB_C MKII
Ergonomic Smoothbore Coaxial
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The cannon is near completion, all it needs is a new piston
Layout:Coaxial
Valve: coaxial piston
Pilot: 3/4" Sprinkler Valve
Barrel: 1/2" Sch-40 PVC
Chamber 1 1/2" Sch-40 PVC
Features: Adjustable stock, inline design(no awkward chamber), with ergonomic design higher degrees of accuracy can be expected, accesory rails allow for future upgrades

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Wow. I'm really impressed with this build. Very clean construction frank. I really ove the chamber design too. Again very nice cannon!

i like the erganomik desing . you should get a backpack or somthing to put a tank in (5 gallon works well for that) and get a cartrige. i want to no wat the range accuracy and power of it is so post the results

iPaintball wrote:Wow. I'm really impressed with this build. Very clean construction frank. I really ove the chamber design too. Again very nice cannon!

Thank you, its been a fun build, and my future ones will only get better, more power, more accuracy, more realistic

dudeman508 wrote:i like the erganomik desing . you should get a backpack or somthing to put a tank in (5 gallon works well for that) and get a cartrige. i want to no wat the range accuracy and power of it is so post the results

Why thank you "Dude" the power is untested but I expect it to be exceptional. the accuracy will be questionable with a smoothbore and marbles

dudeman508 wrote:i like the erganomik desing . you should get a backpack or somthing to put a tank in (5 gallon works well for that) and get a cartrige. i want to no wat the range accuracy and power of it is so post the results

A 20 litre tank in a backpack...hmm okay what the f*ck

The cannon needs a new piston, so I can assume since the valve is not working, neither is the cannon for the time-being.


Edit: Forgot to comment on the nice build

Definetly a nice cannon you have here. Like dudeman, I too will be waiting upon the performance results. You did a good job mounting the stock to the PVC as well.

MrCrowley wrote:

dudeman508 wrote:i like the erganomik desing . you should get a backpack or somthing to put a tank in (5 gallon works well for that) and get a cartrige. i want to no wat the range accuracy and power of it is so post the results

A 20 litre tank in a backpack...hmm okay what the f*ck

The cannon needs a new piston, so I can assume since the valve is not working, neither is the cannon for the time-being.

Ha thats what I was thinking.

I found this on mcmaster, does anyone have any objections to whether or not this would work well as a piston

mcmaster number:8629K151

Might be some friction it being neoprene and all. I'm not sure how well lubricant would lube it up. It could work but I wouldn't know for sure.

Is it large enough diameter for 1 1/2" PVC?


Check my edit in the post above btw

very nice build, great looking cannon you have there.

one question though, how did you attach the stock?
is it just jb welded on there?
can't quite tell from the pictures.

otherwise, great cannon. hope you get the piston working so we can see it
in action

MrCrowley wrote:Might be some friction it being neoprene and all. I'm not sure how well lubricant would lube it up. It could work but I wouldn't know for sure.

Is it large enough diameter for 1 1/2" PVC?


Check my edit in the post above btw

thanks Crowley,
I thought about that too, so I might get some solid stock abs plastic for a piston, and machine some O-ring grooves perhaps then just mount a rubber face.

i have used a 5 gallon tank in a backpack and i suggested it becouse i used it so i could make my gun semi out it works rwaly well and i get about 30shots before i have to pump it again

dudeman508 wrote:i have used a 5 gallon tank in a backpack and i suggested it becouse i used it so i could make my gun semi out it works rwaly well and i get about 30shots before i have to pump it again

Oh it can be done, it's just about as practical as a DVD rewinder.

That is so awesome! By the way...you know how you have a quick connect attached to your gun? How do you fill it? Wouldn't air just come out?

n-strike wrote:That is so awesome! By the way...you know how you have a quick connect attached to your gun? How do you fill it? Wouldn't air just come out?

There is a ball valve connected to the connect

=| I didn't see that...it's hard to see.

its a mini ball valve:;)