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Short question topic

A place to ask general spud cannon related questions.
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Unread postAuthor: Goats spudz » Sat Aug 25, 2012 1:58 pm

doomburger wrote:Ah, I guess I will use the thicker pink colored tape as it seems to be for compressed air. Do I wrap the thicker pink tape just like the normal white tape? (5-6 times around) Thanks guys 8)
White PTFE is fine, pink is for most water systems, the only reason i have used pink PTFE is because it looks cool, if would reccomend yellow.
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Unread postAuthor: doomburger » Sat Aug 25, 2012 3:16 pm

Ok really sorry for all the questions today. :P
Is it possible to make a bike pump powered quick connect to replace a schrader?
Could this schrader valve take ~300psi? http://www.grainger.com/Grainger/LEGACY ... Pid=search

Thanks a lot guys! (and girls?) :)
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Unread postAuthor: Lockednloaded » Sat Aug 25, 2012 4:50 pm

Edit. Wrong thread
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Last edited by Lockednloaded on Sat Aug 25, 2012 6:02 pm, edited 1 time in total.
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Unread postAuthor: PotatoEnemy17 » Sat Aug 25, 2012 5:00 pm

@doomburger Yes, that is very possible. I have done something like that.
And the schrader valve is probably capable of taking that pressure. I recommend you pressure test it under a heavy blanket at first just to be safe.
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Unread postAuthor: Goats spudz » Sat Aug 25, 2012 5:47 pm

doomburger wrote:Ok really sorry for all the questions today. :P
Is it possible to make a bike pump powered quick connect to replace a schrader?
Could this schrader valve take ~300psi? http://www.grainger.com/Grainger/LEGACY ... Pid=search

Thanks a lot guys! (and girls?) :)
Yes and Yes, i have used a soldered brass fitting at 1000 psi, that is solid so it will work great for your pressure :)
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Unread postAuthor: Zeus » Sat Aug 25, 2012 6:13 pm

Brass shouldn't be soldered, it needs to be brazed, but I've soldered it a few times. It seems to hold alright, but I don't use it on important parts.

Trick is to solder it at really high temperature, an iron won't get it hot enough, you need a good torch.

And if you've got a good torch, then you can braze it.
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Unread postAuthor: Goats spudz » Sat Aug 25, 2012 7:19 pm

Zeus wrote:Brass shouldn't be soldered, it needs to be brazed, but I've soldered it a few times. It seems to hold alright, but I don't use it on important parts.

Trick is to solder it at really high temperature, an iron won't get it hot enough, you need a good torch.

And if you've got a good torch, then you can braze it.
I didn't use an iron i did it on the gas stove, Im not sure that would count as brazing, Although methane burns almost as hot as propane.
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Unread postAuthor: doomburger » Sat Aug 25, 2012 10:18 pm

Just tried the schrader, and after around 200psi the inside stopped working
:( I'm thinking about using a check valve after the schrader (without the core). However, will the brass explode at that level? Super paranoid me :D
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Unread postAuthor: Crna Legija » Sat Aug 25, 2012 10:30 pm

doomburger wrote:Just tried the schrader, and after around 200psi the inside stopped working
:( I'm thinking about using a check valve after the schrader (without the core). However, will the brass explode at that level? Super paranoid me :D


must have got a bad one iv used them to 1000psi many of times with none ever breaking.
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Unread postAuthor: doomburger » Sun Aug 26, 2012 11:53 am

Hey guys its me (again :oops:)
One last question before I start buying and building (I promise :P)

For this valve
http://www.ebay.com/itm/GOYEN-CONTROLS-RCA45T000-PNEUMATIC-RELIEF-VALVE-1-1-2-NPT-NEW-CONDITION-NO-BOX-/310386643675
I know the input and output are 1-1/2 inch NPT, but what is the pilot hole?
(eg. 1/4 NPT, 1/8 NPT, etc.)

Thanks guys! :D
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Unread postAuthor: dewey-1 » Sun Aug 26, 2012 12:23 pm

1/8 NPT for pilot.

Read this for more information:
http://www.industrialzone.com/pdf/RCA45Tflyer.pdf
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Unread postAuthor: doomburger » Sun Aug 26, 2012 12:29 pm

Thanks, will post the finished gun soon! :)
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Unread postAuthor: lava98 » Mon Sep 03, 2012 7:40 am

Hey guys, 3 questions :)

What tubing do I need to connect the butane canister to a syringe?
(an amazon link for the syringe and tubing would be REALLY helpful :D)

How is this kind of sparker wired and what type of wire is used? The ones I saw on amazon just had 4 electric dots (whatever they're called) on the bottom.
http://www.spudfiles.com/forums/simple-clear-combustion-t24517.html

Could I use a Banjo cam lever fitting with a 2" or 3" cam lever dust plug to replace a clean out cap? (is the psi rating high enough, will they leak, will they melt, etc.)

Thanks guys! :P
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Unread postAuthor: Labtecpower » Mon Sep 03, 2012 1:58 pm

What tubing do I need to connect the butane canister to a syringe?


My approach is to heat the syringe nozzle, and push it on a pencil tip to widen it.
That way you can put the butane in the syringe more easily :)
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Unread postAuthor: Crna Legija » Tue Sep 04, 2012 2:46 am

Labtecpower wrote:
What tubing do I need to connect the butane canister to a syringe?


My approach is to heat the syringe nozzle, and push it on a pencil tip to widen it.
That way you can put the butane in the syringe more easily :)


i did the same but pushed it onto the butane refill can makes a good fit!

if you really want hose you can just pull the copper wires out of some small electrical cables
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