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"In the world of spuds today"

A place to ask general spud cannon related questions.
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Unread postAuthor: Labtecpower » Sat Apr 16, 2011 11:47 am

I know that there has to be a fill valve. I'm planning on making a piston hybrid.

Already gathering some materials :)
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Unread postAuthor: Gun Freak » Sat Apr 16, 2011 2:23 pm

I figured you knew... just making sure 8)
Dimensions?
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Unread postAuthor: Labtecpower » Sat Apr 16, 2011 3:20 pm

don't really know yet. Depends on the O-rings and drill bits I can find in school :D

as it looks now, 25 mm piston and chamber, I have to find a barrel source yet.
If I can find the right piping, it will be scaled up for more power :twisted:
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Unread postAuthor: Gun Freak » Sat Apr 16, 2011 4:51 pm

If I ever made a hybrid it would probably be a 1" bore max. That way the valve wouldn't have to be huge, and it wouldn't be as loud or huge or expensive.
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Unread postAuthor: Labtecpower » Sun Apr 17, 2011 2:16 am

I'm thinking in the direction of a 1" bore shotgun. I think that design fits the accuracy and the power.

No need for a complete sniper rifle setup on a smoothbore, altough it looks cool.
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Unread postAuthor: SpudBlaster15 » Sun Apr 17, 2011 4:45 pm

Pfft, anything less than 1.5" bore is wasting your time. :lol:
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Unread postAuthor: jackssmirkingrevenge » Sun Apr 17, 2011 4:48 pm

SpudBlaster15 wrote:Pfft, anything less than 1.5" bore is wasting your time. :lol:


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Unread postAuthor: Technician1002 » Sun Apr 17, 2011 5:28 pm

SpudBlaster15 wrote:Pfft, anything less than 1.5" bore is wasting your time. :lol:


I'm not so sure. This has been worth my time.
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Unread postAuthor: SpudBlaster15 » Sun Apr 17, 2011 9:03 pm

Technician1002 wrote:Image


If you'd managed to penetrate the entire cross section of the log with that shot, I might be tempted to revise my statement. :P
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Unread postAuthor: Lockednloaded » Sun Apr 17, 2011 9:24 pm

ITWOST
My piston's O-rings now seal 100%, Once I get my ignition worked out I will have a fully functional piston hybrid. Here's a nifty little part I decided to add (1079K13)
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Unread postAuthor: Gun Freak » Sun Apr 17, 2011 9:28 pm

Never seen those little window things before, they are neat! That is definitely going to be cool. Looking forward to seeing it up and running! I'm sure the ignition would look awesome through that window... do you have a high speed camera? Also which one did you get, a high pressure glass?
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Unread postAuthor: Technician1002 » Sun Apr 17, 2011 11:46 pm

Cool, but did you check the specs.. They are for tanks and resivours. They are not meant for hybrid pressures. Check this item..
BSPP male sights have a max. temp. of 194° F. Not rated for pressure.

NPT male sights have a max. pressure of 4 psi at 70° F. Temp. range is –20° to +210° F.


Nevermind.. I just found the one you mentioned. 1500 PSI..
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Unread postAuthor: Lockednloaded » Mon Apr 18, 2011 8:11 pm

Success! A first fully functional shot from my piston hybrid! It still has a small leak which makes fueling inaccurate, but that can be worked out tomorrow. The shot was successfully ignited using 1psi of propane and 24psi of propane. The piston was held shut with 45psi and had a 50psi pop-off valve.
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Unread postAuthor: Gun Freak » Tue Apr 19, 2011 7:01 pm

Gratz! When can we see it??? Been waiting for quite a while :)
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Unread postAuthor: Lockednloaded » Tue Apr 19, 2011 7:07 pm

Its a finished project, it just needs some aesthetic tweaks to show case. I can "leak" a couple rough photos if anyone's really eager... :wink:
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