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"In the world of spuds today"

A place to ask general spud cannon related questions.
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Unread postAuthor: qwerty » Wed Apr 04, 2012 7:24 am

ITWOST
My slide valve and fittings arrived today :D
expect a semi auto or bolt action .22 rifle coming up, just about to go and PTFE the threads right now.
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Unread postAuthor: Brian the brain » Wed Apr 04, 2012 10:02 am

In that case be sure to watch the "almost finish" thread.
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Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

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Unread postAuthor: qwerty » Wed Apr 04, 2012 1:50 pm

Yeah, i've read a lot of that.
Not sure whether to have bolt action or semi-auto now. I'm leaning towards bolt action for the ergonomics and aesthetics.
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Unread postAuthor: Lockednloaded » Sun Apr 15, 2012 9:23 pm

ITWOST

A little hybrid I threw together today, there'll probably be no testing until next weekend though :(

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Unread postAuthor: jackssmirkingrevenge » Mon Apr 16, 2012 12:34 am

haha!

That looks like it could take a healthy bit of pressure :D manometric or syringe fuelling? and how did you thread the spark plug?
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Unread postAuthor: Crna Legija » Mon Apr 16, 2012 1:09 am

I think it might be a CR10EK they are very close to 1/8npt thats what ill be using for my hybrid, I tested it on a little hybrid I made to 8x it was fine.
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Unread postAuthor: jackssmirkingrevenge » Mon Apr 16, 2012 1:30 am

Crna Legija wrote:very close


Hmmm... oh well, I'm not one to talk about unsafe fittings. In the circumstances I would probably be happy with slopping on some araldite and tightening it up :D
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Unread postAuthor: Crna Legija » Mon Apr 16, 2012 3:09 am

jackssmirkingrevenge wrote:
Crna Legija wrote:very close


Hmmm... oh well, I'm not one to talk about unsafe fittings. In the circumstances I would probably be happy with slopping on some araldite and tightening it up :D


Yeah I put some hydraulic thread locker rated for 10,000psi, its just a tiny bit losers then a standard 1/8'' npt fitting. ill try make a smaller hybrid test it higher pressure.
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Unread postAuthor: Lockednloaded » Mon Apr 16, 2012 7:49 am

jackssmirkingrevenge wrote:haha!

That looks like it could take a healthy bit of pressure :D manometric or syringe fuelling? and how did you thread the spark plug?


The spark plug is the one crna described, I feel pretty confident in it because it bottoms out in the bushing and seals very well. The part that worries me pressure wise is the brass burst disk holder I made from garden hose to NPT adapters. Besides those concerns, expect some higher mix testing!
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Unread postAuthor: jackssmirkingrevenge » Mon Apr 16, 2012 7:54 am

Lockednloaded wrote:The part that worries me pressure wise is the brass burst disk holder I made from garden hose to NPT adapters.


Ah well, if it fails, it will be towards the target anyway :D
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Unread postAuthor: Lockednloaded » Mon Apr 16, 2012 8:42 am

Here's the union:
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Unread postAuthor: jackssmirkingrevenge » Mon Apr 16, 2012 8:48 am

Looks sturdier than the one I'm using on mine at the moment :D

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Unread postAuthor: Gun Freak » Mon Apr 16, 2012 5:22 pm

I've held one of those before, they seem to be relatively lightweight, I don't think I'd use it over 5x but make sure you stand far far away <s>if</s> when you test higher :D
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Unread postAuthor: warhead052 » Mon Apr 16, 2012 6:06 pm

Gun Freak wrote:I've held one of those before, they seem to be relatively lightweight, I don't think I'd use it over 5x...


And how the hell would you know how powerful a 5x mix is? You haven't even made a hybrid that is made from proper materials!
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Unread postAuthor: MrCrowley » Mon Apr 16, 2012 6:18 pm

warhead052 wrote:
Gun Freak wrote:I've held one of those before, they seem to be relatively lightweight, I don't think I'd use it over 5x...


And how the hell would you know how powerful a 5x mix is? You haven't even made a hybrid that is made from proper materials!

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As much as I love busting GunFreak's balls about being a pneub, a pneub sufficient in hybrid knowledge can probably grasp an idea of how powerful a 5x hybrid mix would be. Though, I think GunFreak is wrong in this case and that the compression fitting could be used relatively safely at higher mixes than 5x. Then again; GF only expressed that he wouldn't personally use it above 5x and not that others shouldn't.
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