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No Lathe Hammer Valve

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: Tom » Mon Jun 02, 2008 8:36 am

FordGtMan wrote:hmmm... why would the police take your metal lathe? I am pretty sure they shouldn't be taking that kind of stuff. i understand the guns but the expensive and privately owned lathe? Dutch cops must be some real douches.


That was for paying the economical damage, man the cops in the Dutch are bullshit with their stupid rules. But I'm sure I will continue with this hobby :D
G's from the Dutch, Tom
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Really really proud member of the Dutch Spud Clan!

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Unread postAuthor: jon_89 » Mon Jun 02, 2008 9:48 am

how much pressure will you be using in what size chamber?
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Unread postAuthor: MaxuS the 2nd » Mon Jun 02, 2008 10:13 am

Image


At 50 or 60 bar.
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Unread postAuthor: Carlman » Mon Jun 02, 2008 10:40 am

hey maxus, how the bloody hell did you get that brass fitting off that soda stream c02 tank?
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Unread postAuthor: MaxuS the 2nd » Mon Jun 02, 2008 12:17 pm

:lol: I was waiting for someone to ask that.
In the end, I had to take it to my design and technology teacher and asked him to help me get it off. He stuck it in a metal working vice where the grip was slanted like this ///////////// in order to more effectively grip the sodastream bottle. He got a non-adjustable spanner that fitted pretty tightly over the brass end, now this spanner was already quite long, but he then went and got a length (50cm or so) of steel pipe and put it over the handle of the spanner and put all of his weight on it and it opened. It's just a question about leverage and grip. No way in hell will you ever open it either if your vice has grips like ||||||||||||||||| (because it will just slide), you will also never open it if you don't have a big enough lever.
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Unread postAuthor: Hotwired » Mon Jun 02, 2008 1:54 pm

Heheh.

Enough torque will open anything :D

However I've ruined the tips of many a screwdriver on stupidly tight bolts. Come to that the bolt heads didn't usually fare much better.
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Unread postAuthor: MaxuS the 2nd » Mon Jun 02, 2008 1:58 pm

Yeah, I had that trouble the other day, it stripped the notches from the bolt so I'm screwed now. Sorry for the pun :lol:
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Unread postAuthor: Brian the brain » Mon Jun 02, 2008 2:39 pm

hey maxus, how the bloody hell did you get that brass fitting off that soda stream c02 tank?


I got one off with just a vice and a regular old adjustable spanner.
You bunch of weaklings...hahaha

Anyway.You must have noticed the similarities between our current projects.
Yours will function in a more direct and simpler way, wich should give you a more reliable cannon.
I just wonder...how will you connect the valve to the rest? Aren;t you going to tap it?
If not, you will have a lot of trouble on your hands.

I'm thinking of getting a hammer valve machined for me out of brass in the future, to make a revolver.
It will basically function just like yours..
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Unread postAuthor: MaxuS the 2nd » Mon Jun 02, 2008 2:51 pm

9mm holes are a perfect fit for 1/8" fittings, I could swear that I mentioned that in an earlier post.
Anyway, only one hole is tapped at the moment, that's the one at the back. The Air Outlet has not yet been tapped, I will do that tomorrow.
What I didn't show on the rough diagram was the stock, and that all of this will be embedded in a stock made from either epoxy or a mixture of epoxy and fibreglass. So everything will sit inside the stock very nicely.
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Unread postAuthor: Brian the brain » Mon Jun 02, 2008 3:05 pm

9mm holes are a perfect fit for 1/8" fittings, I could swear that I mentioned that in an earlier post.


So you're gonna fix them in the hole with what?? spit?? :wink:
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Unread postAuthor: MaxuS the 2nd » Mon Jun 02, 2008 3:14 pm

Lol, I don't understand, 1/8" threaded fittings are threaded, the holes are threaded...So I glue them in? :lol:
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Unread postAuthor: Carlman » Mon Jun 02, 2008 11:10 pm

MaxuS the 2nd wrote::lol: I was waiting for someone to ask that.
In the end, I had to take it to my design and technology teacher and asked him to help me get it off. He stuck it in a metal working vice where the grip was slanted like this ///////////// in order to more effectively grip the sodastream bottle. He got a non-adjustable spanner that fitted pretty tightly over the brass end, now this spanner was already quite long, but he then went and got a length (50cm or so) of steel pipe and put it over the handle of the spanner and put all of his weight on it and it opened. It's just a question about leverage and grip. No way in hell will you ever open it either if your vice has grips like ||||||||||||||||| (because it will just slide), you will also never open it if you don't have a big enough lever.


hmm i dont have a vice and i dont go to school... lol

this is gonna be fun...
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Unread postAuthor: MaxuS the 2nd » Tue Jun 03, 2008 2:04 am

Errr..Cut it off?
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Unread postAuthor: VH_man » Tue Jun 03, 2008 2:33 pm

what did you use as a poppet in your valve?

im very interested in this, as i see opportunity for a VERY sexy cannon in my near future using this.
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Unread postAuthor: MaxuS the 2nd » Tue Jun 03, 2008 4:26 pm

A poppet, are you sure you mean 'poppet'?
Stem?
Sealing Face?
Spring?
Ball bearing?
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