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| aaron1023 |
 Posted: 06/04/2008 23:50 PM Post subject: spud gun help |
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Private
Joined: 04 Jun 2008
Posts: 7
12.55 Spud Bux
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| i built a generic spud gun and the thing shoots like ten feet. once out of like 30, i got a loud good shot... but the potato didn't even come out. please help??? |
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| starman |
| Posted: 06/04/2008 23:56 PM Post subject: Re: spud gun help |
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Big Daddio
Joined: 12 Dec 2007
Posts: 1363
2525.85 Spud Bux
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| aaron1023 wrote: | | i built a generic spud gun and the thing shoots like ten feet. once out of like 30, i got a loud good shot... but the potato didn't even come out. please help??? |
Aaron, we'll need much more information about your gun before we can help you...some pictures would be very helpful as well.
Is it a pneumatic or combustion, how big is your chamber/barrel, what you using to trigger it, what fuel etc... |
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| aaron1023 |
| Posted: 06/04/2008 23:59 PM Post subject: |
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Private
Joined: 04 Jun 2008
Posts: 7
12.55 Spud Bux
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| combustion, barrel: 2ft and 1.5", chamber: 1 foot and 2", i use a lantern igniter, and tag body spray |
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| drex |
| Posted: 06/05/2008 0:03 AM Post subject: |
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Staff Sergeant
Joined: 21 Apr 2008
Posts: 101
137.24 Spud Bux
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| you used a lighter? do you have a hole drilled into your chamber? if so the combustion gas could escape threu the hole. |
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| starman |
| Posted: 06/05/2008 0:07 AM Post subject: |
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Big Daddio
Joined: 12 Dec 2007
Posts: 1363
2525.85 Spud Bux
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That's smallish chamber...hard to get to fuel mix right in those. That you get 1 in 30 shots tends to point to fuel mix...you're either too rich or too lean...my guess would be rich. Experiment with your fuels.
Maybe consider a 3" chamber instead of 2" if you keep it a spray and pray. |
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| aaron1023 |
| Posted: 06/05/2008 0:08 AM Post subject: |
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Private
Joined: 04 Jun 2008
Posts: 7
12.55 Spud Bux
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| no i drilled a hole and sealed a lanten ignitor( a flint wheel) |
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| drex |
| Posted: 06/05/2008 0:13 AM Post subject: |
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Staff Sergeant
Joined: 21 Apr 2008
Posts: 101
137.24 Spud Bux
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oh
i thought you ment a lighter that one could use for lighting candles or lanterns. |
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| aaron1023 |
| Posted: 06/05/2008 0:19 AM Post subject: |
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Private
Joined: 04 Jun 2008
Posts: 7
12.55 Spud Bux
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| i've tried crap like blowing in the chamber, only spraying for like a second... i mean what really works |
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| mega_swordman |
| Posted: 06/05/2008 0:19 AM Post subject: |
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Lieutenant Colonel
Joined: 29 Nov 2006
Posts: 476
811.87 Spud Bux
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| If you are getting the noise but nothing coming out of the barrel, I would assume the problem would be a bad projectile in the barrel since the noise should be some indication that it is still firing and pressure is coming out of the barrel. |
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| aaron1023 |
| Posted: 06/05/2008 0:27 AM Post subject: |
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Private
Joined: 04 Jun 2008
Posts: 7
12.55 Spud Bux
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| it was air tight basicly... is that bad |
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| drex |
| Posted: 06/05/2008 0:34 AM Post subject: |
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Staff Sergeant
Joined: 21 Apr 2008
Posts: 101
137.24 Spud Bux
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| no, as long as it isn't to tight so it could not buge when fired. |
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| aaron1023 |
| Posted: 06/05/2008 0:37 AM Post subject: |
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Private
Joined: 04 Jun 2008
Posts: 7
12.55 Spud Bux
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| i think im just going to make a new gun.... whats an easy gun to build |
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| starman |
| Posted: 06/05/2008 1:13 AM Post subject: |
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Big Daddio
Joined: 12 Dec 2007
Posts: 1363
2525.85 Spud Bux
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| aaron1023 wrote: | | i think im just going to make a new gun.... whats an easy gun to build |
Browse through the cannon showcase....find something you think you can handle and go for it. Do as much on your own as possible, if run up on a snag, ask away. |
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| Darkside 6ix |
| Posted: 06/05/2008 2:00 AM Post subject: |
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1st Lieutenant
Joined: 30 Apr 2006
Posts: 296
343.15 Spud Bux
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| lol, That was an easy gun that you build. Try lubing up the barrel with some jelly, Petroleum jelly that is =] |
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| Biopyro |
| Posted: 06/05/2008 3:59 AM Post subject: |
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Sergeant First Class
Joined: 04 Aug 2006
Posts: 141
436.62 Spud Bux
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Maybe you'd prefer starting with a ball-valve or unmodded sprinkler pneumatic. They fire every time, and are suprisingly powerful if they are standalone, because it makes it easier to open the ball valve quickly.
There are a lot of simple pneumatics around, amongst all the less simple ones. Have a look at Instructables  |
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