barrel sealer ,probs?
well yesterday i decided to build a 1'' barrel sealing piston valve,after finding an aluminium rod/piston in the shed. ive attached a neoprene sealing face which is held together by a bolt, the bumper has a washer and 2 o-rings.
refill is via a quick connect ,with a pressure gauge,, my question being im using a 1'' modded sprinkler valve as the pilot exaust ,is that to big?
and does the weight of the piston affect the performance,being a solid 60mm
long, 25mm diameter aluminium piston?
would a 3/4 barrel be too big for performance issues??
refill is via a quick connect ,with a pressure gauge,, my question being im using a 1'' modded sprinkler valve as the pilot exaust ,is that to big?
and does the weight of the piston affect the performance,being a solid 60mm
long, 25mm diameter aluminium piston?
would a 3/4 barrel be too big for performance issues??
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- jackssmirkingrevenge
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With pilot valves it's simply a case of the bigger, the better - given your less than optimal pilot volume, I would say you have an appropriate pilot valve.FORE!!!! wrote:my question being I'm using a 1'' modded sprinkler valve as the pilot exhaust, is that too big?
Technically a lighter piston accelerates quicker and opens faster.and does the weight of the piston affect the performance, being a solid 60mm long, 25mm diameter aluminium piston?
As long as the outside diameter isn't too close to 1" you should be fine.would a 3/4" barrel be too big for performance issues?
- inonickname
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And retains less energy, resulting in less stress on your cannon.Technically a lighter piston accelerates quicker and opens faster.
PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
thanx for the responses ,also i have a small fire extinguisher i bought from bunnings today to use as the pressure vessel, i was cheering untill i undid the valve and realised its a metric thread, im wondering if anyone else has used a fire extinguisher and managed to find a metric to imperial nipple ,would the local plumbing supplies stock such a fitting?????
if not has anyone got any ideas??
if not has anyone got any ideas??
Lol I did the same thingFORE!!!! wrote:thanx for the responses ,also i have a small fire extinguisher i bought from bunnings today to use as the pressure vessel, i was cheering untill i undid the valve and realised its a metric thread, im wondering if anyone else has used a fire extinguisher and managed to find a metric to imperial nipple ,would the local plumbing supplies stock such a fitting?????
if not has anyone got any ideas??
I know McCrowley has used them and had them welded on. Maybe thats a possibility?
- jackssmirkingrevenge
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I'm sure that if you look around you can find a metric/imperial adapter
Not sure if this is one or not. Not exactly sure what its adapting
http://www.bellpro.net/xcart_program/home.php?cat=271
http://www.bellpro.net/xcart_program/home.php?cat=271
- inonickname
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If you find me the exact pitch of the threads, size etc I'll turn you an adapter if you can't find one.
(pm if interested, I probably won't bother asking for payment).
You can also weld, or use epoxy.
(pm if interested, I probably won't bother asking for payment).
You can also weld, or use epoxy.
PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
well after visiting the local plumbing supplies and found out that they dont supply that type of thread,i decided to just cut the top of the fire extinguisher
leaving me with just the thread which i silver soldered to 3/4 threaded brass elbow its works perfectly now,and dam its powerfull!
my final problem to a perfect weapon is that the sealing face leaks a lil ,does
anyone have any ideas on getting a perfect seal?? my neoprene sealing face rest against a clean cut copper pipe using tube cutters ,which has been lighty
filed with a smooth file ,it dosent get any flatter????
leaving me with just the thread which i silver soldered to 3/4 threaded brass elbow its works perfectly now,and dam its powerfull!
my final problem to a perfect weapon is that the sealing face leaks a lil ,does
anyone have any ideas on getting a perfect seal?? my neoprene sealing face rest against a clean cut copper pipe using tube cutters ,which has been lighty
filed with a smooth file ,it dosent get any flatter????
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Get a piece of stick on sandpaper in a fine size. Cut a circle and stick it on the end of a dowell the same diameter as the piston. Insert and rotate. When done there should be no sign of any file marks. All the sandpaper marks should be very fine and travel around the barrel seat, not crossing it making leakage paths. It works for me.FORE!!!! wrote: my final problem to a perfect weapon is that the sealing face leaks a lil ,does
anyone have any ideas on getting a perfect seal?? my neoprene sealing face rest against a clean cut copper pipe using tube cutters ,which has been lighty
filed with a smooth file ,it dosent get any flatter????
Don't overlook other possible leakage paths such as along a bolt that fastens the neoprene to the piston face. It is often a source of leaks.
- jackssmirkingrevenge
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Good to hear, now let's see those damage pics
Tommorow is saturday so ill make a video with pics,i have to go to the bush to shoot it cause the last time i let off a couple of rounds with my previous pneumatic my kind neighbours decided to dob me in to the police
anyways sit tight 8)
anyways sit tight 8)