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SpudGunExtreme

Have spud gun - will mash.

 

  1. Make a simple spud gun

  2. Common Terms of Plastics relating to potato guns

  3. How do I glue PVC pipe?

  4. Information Request Form

  5. Multi Spark ignition for combustion spudg gun

  6. Other Resources

Make a Simple Canon - (click here)

Common Terms of Plastics

 “Originally posted by Drac on the Spudtech forum and modified by”…Sqort87 from LaunchPotatoes

“Helpful Terms:

NSF-PW: means that the pipe is pressure rated. (PW=Potable Water)

XXX PSI: the pressure the pipe is rated to.

DWV: Drain, Waste and Vent: safe for Combustions, not for pneumatics.

Male NPT x Socket Weld: Adapter with male threads that fits over a pipe by slipping on.

Female NPT X Socket Weld: Adapter with female threads that fits over a pipe by slipping on.

NPT x Spigot: fits into a coupling, Tee, Adapter, or anything that joins over pipe. Spigot fittings
          have the same outer diameter as the corresponding pipe.

PVC: Polyvinyl Chloride: Standard pipe, pressure rated but can become brittle in the cold.

ABS: Acrylonitrile-Butadiene-Styrene: fine for combustions, but not pressure rated so DON'T USE IN PNEUMATICS!

Cellular Core: Very Unsafe. I wouldn't recommend to use it in anything.”

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 Multi Spark Igniter for Combustion Spud Guns

You can use an electronic igniter instead of the old mechanical BBQ style igniters for firing your combustion spud gun.  The electronic versions "pulse" a continuous stream of sparks as long as you keep holding down the trigger.  This igniter was obtained from eBay for about $20 each from eBay seller oildoc.  The best, however it is slightly expensive, is the stun gun igniter for spud guns.

Here is some information on how to assemble the unit into a trigger.    
http://www.wolfcall.com/dummy_battery.htm

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Other Resources

To get some more helpful hints regarding plastics used in the construction of combustion or pneumatic potato gun / cannon, click on the link below. This is great stuff. You will not regret it.

http://www.launchpotatoes.com/forums/viewtopic.php?t=34

www.wikipedia.org

www.spudfiles.com

www.spudtech.com

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CAUTION

“Never, I repeat, never use ABS pipe when constructing pneumatic cannons, and I do not recommend using it for Combustion Cannons though it is commonly done. Some people differ in opinion. However, ask yourself, if it is not good for pneumatic cannons, why would you use it for combustion cannons?

ABS develops tiny little air pockets when being made.  This makes the product light and easy to handle.  As a result it is not pressure rated and is designed for DWV"

- Nicholas Benigni -


 
 
 

How do I glue PVC pipe?

  1. “Square pipe ends and remove all burs and dirt.
     
  2. Check dry fit of pipe and fitting. Pipe should easily go 1/3 of the way into the fitting. If the pipe bottoms, it should be snug
     
  3. Use a suitable applicator at lease ½ the size of the diameter. For larger size pipe systems, use a natural bristle brush or roller.
     
  4. Clean pipe and fitting with a listed primer.
     
  5. Apply a liberal amount of cement to pipe to the depth of the socket. Leave no uncoated surface.
     
  6. Apply a thin coat of cement to the inside of the fitting. Apply a second coat of cement to the pipe.
     
  7. Assemble parts QUICKLY. Cement must be fluid. If cement surface has dried, recoat both parts.
     
  8. Push pipe FULLY into fitting using a ¼ turning motion until pipe bottoms.
     
  9. Hold pipe and fitting together for 30 seconds to prevent pipe push-out – longer at cold temperatures. Wipe off excess
     
  10. Allow 15 minutes for good handling strength and 2 hour cure time at temperatures above 60 degree F before pressure testing to 180psi. (Water use only. Not designed for those strengths with compressed air.) Longer cure times may be required at temperature below 60 degree F or with pipe diameters above 3”.

OATEY
4700 160th St., Cleveland, OH 4413
 800-321-9532  www.oatey.com                                                                          Made in USA”
 Directions from the Oatey PBC Cement can.

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