burst disc nail gun

[Cosmic Muffin]

this is just a parts gun, kinda "ghetto"
whipped it up when i was sh!t bored yesterday.
i made this dart from a presta valve cap and a nail, put it into a chunk of wood so you guys can have a look at that when i get the pic up.

i use 6 layers of aluminum foil

thats dads shock pump there
lucky he is in Adelaide today

<a href="http://tinypic.com" target="_blank"><img src="http://i40.tinypic.com/vxheo1.jpg" border="0" alt="Image and video hosting by TinyPic"></a>

note the crazy green thing, its a tap-hose attachment, skillfully converted to a very basic breech loading system

<a href="http://tinypic.com" target="_blank"><img src="http://i43.tinypic.com/fdra8m.jpg" border="0" alt="Image and video hosting by TinyPic"></a>

[Mitchza89]

Nice mate, nice. That would be a fun little gun .

[Cosmic Muffin]

yer it aint too bad.
but preparing the discs is a real bugger.
makes a cool sound tho. like a .22

[jon_89]

What pressure do you use it at? I do the same thing when I am bored out of my mind, go to the spare parts bucket and attempt to make something worthy or not.

[Hotwired]

I wonder how many people have made that style cannon before.

I know my first ball valve looked pretty much identical to that. Except it was copper.

[Cosmic Muffin]

i have only used it at 100 psi cos there is a leak.
i think heaps of people have, its just simple but good

[psycix]

Where does it leak?
This should be good for a higher pressure (besides the green thing and possibly the PVC elbow though).

[Cosmic Muffin]

yer i know, its at the pvc elbow, i think i was a bit stingey with the thread tape

[psycix]

Always apply more teflon tape then you think you need to.
I usually stick to 5 layers, which is quite alot while winding it.

[Cosmic Muffin]

yer i did about three. but i wasnt looking to win the best gun contest lol
i just wanted to see the difference between burst disk and no burst disk
so i didn't really want to waste too much of my expensive tape

[psycix]

my expensive tape

One roll of teflon tape is typically bought for one or two bucks. You may even find cheaper stuff on occasion.
Next to that, its much more of a waste if you find out that your fitting leaks because you added too less tape and got to add tape again.

[Cosmic Muffin]

lol mate i was joking, tape is 99c here

[airheadnoob]

i have only used it at 100 psi cos there is a leak.
i think heaps of people have, its just simple but good

yeah i made 1 like that but it broke all my pumps cause i wanted more power then 100 psi i tried for 200 but the pumps where cheap and broke at 130psi

[ckman]

broke all my pumps cause i wanted more power then 100 psi i tried for 200 but the pumps where cheap and broke at 130psi


I think you should make a shock pump or a fridge compressor if you want more pressure or buy one its better than to keep spending money on bike pumps.

[inonickname]

i have only used it at 100 psi cos there is a leak.
i think heaps of people have, its just simple but good

yeah i made 1 like that but it broke all my pumps cause i wanted more power then 100 psi i tried for 200 but the pumps where cheap and broke at 130psi

Is it just me, or do all of these guy's posts make you think he has his name for a reason..? Bike pumps are really only needed to go 40ish psi, or however much you put in your tire...