SpudFiles

Is it possible that those skrews are protruding too far into the inside of the tee? That would restrict piston movement.

mopherman wrote:Is it possible that those skrews are protruding too far into the inside of the tee? That would restrict piston movement.

i never thought of that being the problem il open her up soon and take a look and do some measuring but here's a concept iv being working on

(the dark green tube not labeled in the diagram is 1/4 300psi bit of air hose)

there u go that should work...how r u keeping the air hose firm? hope uget it working!

hey thx for all the pics experament-u2 they helped me understand how a piston works. now i can try to make one but i think mine will have a trigger release in the back. it will lock forward in the sealed position and spring loaded to open. maybe. anyway thx.
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Spuddin wrote:hey thx for all the pics experament-u2 they helped me understand how a piston works. now i can try to make one but i think mine will have a trigger release in the back. it will lock forward in the sealed position and spring loaded to open. maybe. anyway thx.

im glade my work has done some good 8)
i like your idea i would like to see a diagram of your desgin

spudthug wrote:there u go that should work...how r u keeping the air hose firm? hope uget it working!

the air hose is pretty thick and in a short length stays pretty straight and firm

did u try it yet? if u have everything u should try it...if this is ur first piston gun then u will be surprised on how much power they ahve and how fun they are...

spudthug wrote:did u try it yet? if u have everything u should try it...if this is ur first piston gun then u will be surprised on how much power they ahve and how fun they are...

well its 12 pm here now so i think il do it tomorrow
this is my second piston gun, my first was a little bb gun that rocked until the oring on my piston broke and iv being unable to find another one the same size (oh and yes that is 2 tee's epoxied together)

heres a pik of it without the trigger system on

Open question --

How much pressure do you think the epoxie will hold?

jrrdw wrote:Open question --

How much pressure do you think the epoxie will hold?

well, jack has successfuly taken epoxie to 400 psi. but that was an itsy bitsy glob. i would guess you should be good around 80.

iv takeen it past 100 heaps of times and its shown no stress marks or cracking and still looks perfectly fine

That BB is sweet U2, man i hope ya get ya piston problem solved mate it will be another great aussie piece (as always ) when its done

to bad ya o-ring broke on ya bb that is a great little gun ya got there i hope you fix it soon 8)

peace
chaos

Nice to see someone else veering away from standard parts and getting their hands dirty with epoxy, looking good U2

If I could make a suggestion though, this is how I put the seal on the barrel of my small 3/4" pistons (making another one at the moment )

The diagram should be pretty much self explanatory.

jackssmirkingrevenge wrote:Nice to see someone else veering away from standard parts and getting their hands dirty with epoxy, looking good U2

If I could make a suggestion though, this is how I put the seal on the barrel of my small 3/4" pistons (making another one at the moment )

The diagram should be pretty much self explanatory.

so the sealing face is on the barrel not the piston?
or is there one on both?

oh and off topic what is your display picture jack?
EDIT: i just noticed its a tablet of some kind

the sealing face is on the barrel only, a bit like my pengun project.

My display picture is a pistol cartridge in a pill packet, made it from a photo entitled "sleeping pill".

jackssmirkingrevenge wrote:the sealing face is on the barrel only, a bit like my pengun project.

My display picture is a pistol cartridge in a pill packet, made it from a photo entitled "sleeping pill".

kool 8)