what size pipe do i need n is it nessacary to still put an end cap?computer fan
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SpudBlaster15
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Last edited by SpudBlaster15 on Wed Jul 14, 2021 12:16 pm, edited 2 times in total.
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Pete Zaria
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80mm Case fans (you need a brushless, 12v DC case-type fan) fit pretty well in 4" pipe. If you're using smaller pipe, you'll need to find a smaller fan - maybe an older CPU fan, or one off a graphics card. You can also modify the dollar-store type portable fans to work.
A 9v battery and two AA's in series provide 12v. A cheap radioshack on/off switch does the job for controlling it, though some people build circuits to automatically run the fan for 10-15 seconds. Search "fan controller circuit" for info on that.
Why would the fan affect the end cap...? Of course you still need one...
Make sure you tap all the holes in your cannon (such as the hole for the fan wires) where there are two layers of PVC/ABS (where a fitting and pipe overlap) and solvent weld all your joints properly.
Peace,
Pete Zaria.
A 9v battery and two AA's in series provide 12v. A cheap radioshack on/off switch does the job for controlling it, though some people build circuits to automatically run the fan for 10-15 seconds. Search "fan controller circuit" for info on that.
Why would the fan affect the end cap...? Of course you still need one...
Make sure you tap all the holes in your cannon (such as the hole for the fan wires) where there are two layers of PVC/ABS (where a fitting and pipe overlap) and solvent weld all your joints properly.
Peace,
Pete Zaria.
shud d fan be blowing in or sucking out? -
SpudBlaster15
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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.
Last edited by SpudBlaster15 on Wed Jul 14, 2021 12:16 pm, edited 1 time in total.
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MisterSteve124
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Look at the picture. You can put bolts into your chamber going through the fitting and the pipe so it is 2 layers. and you can just make some sort of bracket out of sheet metal or whatever. There isn't really a way that everyone does it you just improvise.