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A place for general potato gun questions and discussions.
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pyroben
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Sun Jan 02, 2005 12:17 pm

This is the fan and control box i'm installing in "The Eye"


http://tinypic.com/view.html?pic=15hs89

It's a bit messed up
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syco kilaa
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Sun Jan 02, 2005 4:06 pm

is that an altoid box?
nice 8)
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theexp
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Sat Jan 29, 2005 12:55 pm

Nice, i like the switch, i have the same thing on my cannon...

(cuz we live near eachother, and are friends)
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pyroben
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Mon Jan 31, 2005 7:07 pm

Good theory for similarities exp :lol:
duct tape makes the world go round
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theexp
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Thu Feb 03, 2005 4:29 pm

I thought so...

but how could i put an led in there,
I think i would need an 100 ohm resister (correct me if i wrong) but then i don't know how to step the voltage back up, or better to 12 volts?
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BC Pneumatics
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Thu Feb 03, 2005 6:33 pm

Add a 333 ohm resistor after the fan, then put the LED, and run it back to the power supply. This way, you dont need to use an amp, and the light is only on when the fan is. I can really see the point of haveing a light that is on all the time, unless it is to check the power supply, or just for looks.
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theexp
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Thu Feb 03, 2005 9:22 pm

No, i would put it on after the switch, but i don't completly understand what you are saying, can you draw a diagram? or pic
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BC Pneumatics
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Thu Feb 03, 2005 10:51 pm

Here ya go:
<img src="http://www.spudfiles.com/uploader/uploa ... schemy.PNG">

And fer the electronicly chalenged:
<img src= "http://www.spudfiles.com/uploader/uploa ... emylab.PNG">
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CS
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Wed Feb 23, 2005 11:29 am

how do they work cause when you shot it wont all pressure from the explsion break the fan or is there something that iam not catching on to your concept.
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BC Pneumatics
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Wed Feb 23, 2005 6:33 pm

Pressure on the fan is pretty equil on all parts, so in most places, the net force is 0. Imagaine a mall peich of sheet metal in the chamer. When the gun shot off, nothind would happen to the metall, because both sides of it had equil pressures acting on them. same thing with the fan, only it isnt flat.
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CS
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Wed Feb 23, 2005 9:09 pm

thanks BC that makes more sense now
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theexp
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Fri Mar 18, 2005 9:59 pm

ok, thx

Real Nice analogy, with the sheet metal.
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Solar
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Wed May 18, 2005 12:15 am

Once again I am wondering if this is an ignitionless fan like a bilge blower. Otherwise it can cause a misfire.
spudshot
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Wed May 18, 2005 3:33 am

a computer fan has a brushless motor and will not create sparks
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patraccoon
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Wed Nov 09, 2005 7:32 pm

btw make sure you put the fan in facing the right direction (blowing toward the barrel) because i definately put mine in backwards and the fan blade blew off and broke etc. yet another 20 dollars wasted
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