SpudFiles

Alright so here it goes. Instead of spending $134.99 on Joel’s low power launcher, I am going to show you how to make one for about $100 less.

Materials:
1x 24” of 3 inch PVC sch 40
1x 24” of 2.5inch PVC sch 40
1x 3” coupling
1x 3” cap
1x 3” x 1.5” bushing
2x 1” male adapter
1x 2.5” coupling
1x 2.5” x 2” bushing
1x 2” x 1” bushing
1x slip x Mips 1” elbow
1x slip x Fips 1” elbow
1x 1” orbits water master modded sprinkler valve
1x 1-160 PSI ¼” NTP Pressure gauge
1x 1/8” NTP shrader valve
scrap 1” PVC
Teflon Tape


Tools (specialty)
1/4”-18 NTP tap
7/16” drill bit
11/32 drill bit
PVC Glue and Primer

START AT THE BOTTOM

lol next time upload the pictures in reverse

i want to see a picture of the whole thing, and why did you use a pressure guage that only goes up to 15 psi??

it's kick ass of you to make all of these tutorials

i used the 15 Psi guage because 15psi shoots tennis balls 75 yards, plenty far for dogs:)
also i need to get a gifferent elbow because the one i bought ans male and female threads where i only neded the male ill post pics soon though so dont worry

I think that it is pathetic to use small sprincler valve for tennis balls, specialy at 15psi.Combustion will be much more powerfull and chep for tennis balls.

i like it but rambo is right a combustion would be cheaper and more power full.

the large font DWV on the pipe is screaming for attention

the cannon os not ment to be powerful, it is ment to shoot tennis balls ~100 yards for dogs, not distroy things
The DWV on the side of the pipe does not mean it isnot pressure rated. a cut it off of a piece that said 260PSI the DWV on the side just means it can be used for Drain Waste and Vent the other piece also says NSF-PW on it

itl stop them noobs whining for plans, thank god.

very good, although you could probly say just a tad more about the valve modification in your final "how to". and yes i do know that the "how to" for valve modification is already there. overall great job

Flinchy wrote:very good, although you could probly say just a tad more about the valve modification in your final "how to". and yes i do know that the "how to" for valve modification is already there. overall great job

...why would he tell how to mod the valve in this thread when the reader could just as easily head on over to the "modding a sprinkler valve" thread?

because he gets more spud bucks.

Benny wrote:because he gets more spud bucks.

w00t! spudbux ftw =)
...
Actually, anyone know how they're calculated? I'm guessing 1/100 of a spudbuck per character or something?

actually no because you can only get 5 spudbux per post. i had already reached that limit in my topic, and besides there is already a great how to on how to mod a valve

EDIT its 1 spudcent to a caricator

Step Thirteen
Drill a 7/16 hole streight into the slace where you want youre gauge to be. then uaing youre 1/4" tap therad the hole. go in one turn and then out 1/4 turn to clear the threads.

does somthing seem wrong with that drill and tap to u lol...
a 7/16 drill is bigger than a 1/4 tap... when tapping you predrill the hole 1/16 smaller then the tap you plan on useing, not larger. so u put the wrong numbers for step 13. im a machienest so as soon as i seen those numbers i was like wtf??? hows that gonna work,lol

Obviously your not familiar with the NPT pipe thread.

For information on NPT threads, please refer to this article: <a href="http://en.wikipedia.org/wiki/National_p ... >WikiPedia Article - National Pipe Thread</a>

1/4" threads have a exterior diameter of .54"