" Today it's up to the system is brought to you by Netflix. GoDaddy. In the united states air force base better -- a year back at the workshop we're played around with sort of the 2.0 version the Turbo charged version of our. Tennis -- are compressed air cannon. In that -- your questions not all of which in fact many of which are not about your -- and -- kind of stoked about David Randolph is stoked by the home. Probably unconscious under Pao chicken sued because he is as sick as a dog which is a shame. Because he has a really cool always been playing around with the last couple of days go to -- laser -- one of their laser -- systems and actually let me see. Roger you gotta -- look at -- the other people of the loom got a notebook -- there's been would etching metal pitching plastic -- It has been an -- lose -- to talk more about that. Little later on a better Norton in -- watching system. -- here with our there's the media. Their -- we couldn't -- last week because we the we I managed to drop it was tapping it for. The air vents which kind of machine. It is they considerably larger air Canada which means it's pushing it considerably large amount of air through considerably longer barrel which means it should shoot tennis balls considerably farther. Considerably I think is the -- date today. We had a stack of your questions and much questions the forms were started on those -- about choosing parts. And you may notice there is a crazy collection of pipe fittings actually -- gets a shot of the -- over there which you shut those clippings over there. -- You'll notice it's like a giant bank of Lagos. Which means two things one we changed or design a bunch for fun and too. You may think that things -- fit together and they don't would you -- would think about the various coupling you have that available so. Member what was the scheduled forty steadily scheduled one point -- In this case. -- threaded ninety degree hell we've got Cutler's which are basically joining are producing adapters so basically. -- brace yourself you're gonna see much supplies of the screen here you have coupling which joined two pieces of pipe a cap which is the end of pipe. You've got producers which takes you from one's -- to another tease and there's it to you right here somewhere -- up on the screen basically T takes two pipes and since the third out of ninth degree angle. 45 degree l.s ninety degree hills street -- Whichever -- size or do a taper out and wise which is astray it'll say peachy up on the screen policies are available in threaded in -- on threaded versions. To what I can do these look like check out to harp L dot com and we cuts links from plumbing products Glasgow fittings and keep the seat fittings that come up on the website where the just thing about. About a few built on line in the replace what barrels -- you like -- one inch two main streets barrel. Good inside as objects of three's parent here T shirts one inch barrel for smaller objects. Obviously the longer barrels -- smaller barrels on the same air chamber he tend to go longer distances one they why wouldn't you think about putting. Some type of threat coupling them back you Merrill to attach that if you want to be able to exchange barrels on that. But folks asked about what's the scheduled forty business law along with the thing you need to look for all your fittings and all of your pipe that basically determined that its pressure rated pipe. Schedule forty scheduling your part of -- PS of the national right. Size standards basically it's a schedule of information talked about the outside diameter of the pipe verses the fitness. The inside wall so glossy one gram piece by. So -- look -- some schedule 43 inch pipe break here him what. Scheduled for determines is the outside the Amber's gonna be three inches although it's actually if you look at the -- it's up on the screen right now it's actually a little bit bigger than three inches. And then the wall thickness is specified to make it pretty critical is basically this is part of via. -- dimensions that are set them that are standardized. For pressure -- United States is a very similar tables available with a different name in Europe. But basically that these would look at this is these are pair there's the schedule forty fitting in schedule eighty fitting. And schedule -- degree sitting on top look at how much thicker decide ball is basically is scheduled number goes up the thickness of the wall goes up -- a big way. Totaled forty pretty commonly available on talking about if you walk on its its. Pretty much everywhere and I happened to inside this traded like 140 PSI have -- three degrees schedule he's gonna be raided a minimum of 200 PSI Sydney three degrees. As a 122. Schedule 120 exit should be even higher than that. Reason pop out and find the air compressor section of your local hardware store is gonna tap about a 115 PSI. Meaning bigger than that I'm just not ready to play around with if you want to go for big numbers that for the for scheduling your schedule 120 and beware this stuff is a lot more expensive schedule forty the white stuff is gonna do it most of you. Injustices for like the 43 time don't use -- don't use pipe unless it's got the schedule forty readings basically schedule forty and pressure reading on there. -- the bulk of your face that would that. So but it's a shame Randolph is here right now because if you want to be laughing his ass off his father left his ass off casinos has happened. At home but you'll notice that we of this dual sort of W shape here in the measure twice cut once departments. The two outside -- be facing one way and the T. Was actually supposed be facing this ways to do yourself a favor. Lay all this stuff out maybe market up so it's easier if you remember what critic Lewis has never once the stuff together. It's out together permanently and once it's broken or put together the wrong way unless you have another project -- happening something like this. It's useless. This is."

" That -- want to put on the list our sponsors are sponsors help pay the bills which means they helped -- you if you like to show we'd like to ask you use a favor helps -- our sponsors like go to any dot com a great source domain names have been using it for years dollar 99 is the lowest point you can -- A he had domain from -- dot com world class hosting fast and easy website builders and a lot more now through its use of paper until well. Register domain right now and when you could pay for it -- since four. When you check out you're gonna save additional 15%. On any order of 75 dollars or more that's -- goodly amount of cash to some restrictions apply. You can give details on that particular data dot com do us a favor picture piece of the Internet a good -- dot com and when did you -- in co exist for is that lets them know that you're interested what they're doing which means they'll keep paying us to keep doing this for you. But it sounds like that thing right. You'll notice is we are testing the second -- and our fabulous new Swedish intern Camilla highly protected. To sign of her intelligence when working around the system crew and actually bring us through great email from brat. Just -- your show nice really appears to -- geek in me. I'm a little worried about you guys though. He's at CUX which is computer and marine electronics services for -- electronics like oh my body -- does. They were with marine electronics. Usual poisons plus poly proxy solvency -- you guys are clearly careful to mention the need for proper ventilation on the shows a scene unfortunately and that's the big unfortunately. They don't grab whatever toxic delete exploded you're trying not to breathe a deal with your bare hands. Gloves -- there with a proxy strong -- is an exotic sealant they can really permanently mess you up right through this you know inhalation needed fast and you could say hey. I remember having that -- yesterday. I don't like that could. Nights throughout -- text the trial finally fix whatever they're under a penny -- please -- like you to keep your excuse now that -- review our best brad will brad thank you. And I'd actually have a personal collection at the trailer and I trial and I TR ILE globs. Just like when -- in the hospital when my child and actually because of you are probably Obama's only proper adult type respirator and you may have seen these little paper masks. These are great for DOS and the pollen and if right and 95 -- may be for latex fumes for anything other than that these are useless -- what's interesting is there always have paper filters but there's actually charcoal inside of these. And now that works in lots better than some of the stuff you normally see the little paper maps. And now these are replaceable and this is form fitting so which is. Much more intense than we're using took a moment not actually doing anything together should also point -- I do need to look at our. -- because this is not supposed to -- is for ammonia I think we're clear on that formaldehyde that we're clear on and page or go to educating our society it materials. That I gotta check on the can and abrasive blasting including San busting but from also simply use this will do -- perky serious jobs so. -- I had this. This is for you I'm gonna try to fit this now."

" Thank you think about metal -- like that the thing I -- you -- a good thing was doing moving through the."

" a lot easier actually than the little paper maps which are fine for dust -- much useful for anything else. And also the only device it'll help -- set to test it. You could blast through you know what do -- do -- don't have air compressor or COT take a bicycle couple do the job. It just takes a few minutes to get it up to the 120 PSI -- bicycle pump -- got like these super cool their bicycle pump and pump these up pretty high pretty fast. Doug what Patrick failed miserably at doing -- we're talking about ratios specifically somebody asked us to go a little bit more -- that would be ratio the combustion chamber or air chamber to bear so who's gonna shell out pipe for me."

" Yeah we'll we'll and."

" Excellence here -- she gets a gold star energy hitting the media superseding -- a -- it'll never make it to the final version so volume equals -- Times the radius squared so the radius is half of the diameter of the radius squared. At times the length in inches which basically means you're looking for a ratio from the chamber to the barrel. For combustion candidates -- tech dot -- it's still surprise you is amazingly generous and information is one point six to one is the ideal. It's volume ratio for an air Kennedy says he knew -- tons of points and 51 that's what we're doing here is a point 75 to one barrel. And especially if you go with a longer barrel so if you go the longer barrel. Basically your air pressure is working with more distance before the project out leaves the barrel and the acceleration stops. 21 the port one he says it's kind of the sweet spot taking longer than 41 you're basically you're not gonna slow down but you're probably not gonna see anything that. -- useful that point like rapidly rapidly rapidly diminishing returns. Because the projectiles to be out of the barrel before you empty the air tank. So PC -- is available almost every harbors -- the planet's this doesn't big box stores big box stores like Home Depot Lowe's. Generally only have half inch -- three quarter -- two HP VC so three and two and a half inch and fourteen BC kind of tough to find at least. Here in California. It's a start looking around for there's always a hardware store in your town. Where everybody goes -- obscure stuff stainless steel fasteners brass -- really bizarre hardware the place has every tool on the planet -- So you're gonna look for the ultimate -- hardware store. Or you can ask a plumber or -- directory for plumbing supplies. And distributors. And asked them if they stock schedule forty or schedule EP BC in the size you're looking for. Those are pretty much it generally speaking you're gonna look for the will be packed hardware store or plumbing supply via. Distributor. The raging debate or at least a -- discussion on the boards I about -- why I went with the use shape designed rather than a straight line designed. It's very were -- performance boost from going straight line or. Some people were thinking at this does look very structural if you're actually worried about one -- this is pretty early. If you're worried about being not early enough you could go with any basically W joint down here to. Have a stronger joint here or quite frankly the simplest thing is just put it block. In between the barrels and zip -- duct tape around that we're secure and some other fashion. The other is that went with the U shape guns instead of the long. The political. They they very much. Is because it want to end up they seven or eight foot long gone but this one we can definitely. There's definite barrel in the chamber so long we could definitely break this back here from our -- also may actually putting it breaks up on the front of this. Keep it stable but. Quite frankly I'm what's of it would fit my car and Eagles like to be a T 9000 makes me happy in a seven foot long to Google could be 18000."

" These are -- about sprinkler mouse. What you what do we buy it from the valve fourteen other shop is check the manual inside and see with the air pressure reading his reverser. What were using on these ones that are a little bit smaller and a rated for a hundred PSI which is more than enough. Pounds per square -- handle our application but these are diaphragm -- and they're really. Kind of -- Goldberg. Because the pressure comes in here and it leaks up his little tiny hole mystery -- basically creates a -- events. Until the high pressure is on the top of the valve along with the bottom of the -- and he analyzes and presses this. Against the top of the output. Makes sense probably doesn't certainly didn't four mile -- looking at but basically this is pressed down by equalizing pressure from the inlet valve. Through to the top of the valve until the solenoid strikes and and so what strikes it lifts up and uncovers that he tiny little hole. Which allows air into this chamber. And that allows the diaphragm to pop up and let's -- come out. Through via -- if -- that the right way to see her come out so it's a pretty. Bizarre concept what did you -- to make them operate faster you can start opening up to chambers to make wider. Because what. Basically die from a little faster and want to eliminate anything it blocks here there's other browser and actually view. -- vows are considered the highest performance for one of the simplest things you know increase performance on these. Is to to what target. It's about Turbo charging gastric thereabouts Tom there you can use something like a sliding diaphragm valve which unlike -- get into X I've still sorting out how to make one myself but basically Turbo charging means allowing the."

" Air behind the valve -- event faster the last opened faster and spill your compressed air into the -- faster faster. Spilling in the air is good need to try drilling up little tiny hole behind. That's -- solenoid or you convince the back of the valve directly by drilling a hole. Tapping it's inserting -- connector. And put the slogan on the end of it and basically well what big giant hole versus little tiny hole. Big giant hole lets the -- out faster and that basically allows the diaphragm. Valve to open faster which lets the air still out faster they could have been reports."

" They weren't able to tell you about. Systems Netflix sponsored movie of the week one of my favorite movie's actually about motorcycling because I really hated the and easy rider is the world's fastest -- movie proper grow. A act -- older kiwi who built in 1920 India bleeding problems actually -- into the salt flats several times setting land speed records. And you have some crazy stuff for the intake -- heads turned it over his camp and I'm -- start it's really really cool and has the original documentary. He actually compared the can be as played by sir Anthony Hopkins versus -- Lieberman -- in the original documentary offerings to -- speed it's just awesome awesome -- especially like -- if you like motorcycles like going fast if you really get an idea what it's like being -- certain -- that one of the ways you can help us keep -- system used by supporting our sponsors which brings us and Netflix. Along with the world's fastest Indian it that's been like 89999. Other titles including a huge selection of Blu-ray would you could have delivered to your door. They've got forty shipping centers around the country which means most people can get a movie delivered to them in a single shipping date plans start at four dollars and -- united fans but if you want to -- system the hook up. Go to WWW. That Netflix dot com slash system. And you'll get an absolutely free trial it was -- support us by supporting them and yourself a favor check out our Netflix movie of the week. The world's fastest Indian it's a lot of fun."

" Double comments of the forums are up for detective Bob BCA and other safety tip PVCs not -- on the cold it -- gets -- did not fire these if it's colder than ten degrees Celsius also -- degrees Celsius most repellent stay illiquid I'm thinkin'. That commodities here are in the great -- can media up north -- cold. Would repulsive liquid that's really not good for the PVC is it might tend to eat at BBC it's one of the reasons I like actually using the compressed air cannons rather than be flammable cannons -- the what we call that flammable or explosive gases that go boom. Hairspray right. They case twenty manages ago with a compressed air cannon over the combustion powered -- you have to worry about chemicals sprayed her eating up PVC. BCA who apparently is really into this also writes he never leave a cylinder charge is one of the reasons -- actually have the band's built into these. Heat in time -- destroy the integrity of the cylinder yes and leave it charged generally is not a good thing he says. To each other right there he says you save a loud noise that morning or is this of the valve receding yes it is. Jonathan asked is it media more air the tape from multiple shots no attacks because we have a tank connected to this and it receipts in between Johns wondering if you could avoid abilities by adding a few more parts. -- just basically when the air initially or at least not that I found so far yet the noise comes when the valve is filling in that little tiny hole I think and receding he's definitely experiment -- let us know how it works out to be to make -- go away I want to know how to do it because. Like you my dog to be terrified her be generated through. The valve receipts you know us about being -- here the studios have been able. Jeff -- city says this latest episode ability air Canada it reminded me of my coiled -- I've been working on iPhone would make a great project for system. A call that is basically -- he's a very strong magnetic field accelerated -- bullet. I can't get a little terrified about doing things like. I heard bullets anything that I think they actually penetrate I think it has long and it -- my nose maybe question eye socket but. It iron -- just think about that scares me a little bit. Just as the simplest -- to to build -- guns for the disposable camera he's got a set of instructions and Dave before he got six saw this yesterday and said. Build it in big strong red letter so apparently. Dave wants to build -- that you know commitment -- the idea because I -- the plants and they're pretty cool in the immediate -- it was what -- using the kind. Pastor inside of a little kind disposable flashlight while using gigantic can pastor like he used for car stereo. And I just if things go downhill from there so if if if mr. Randolph is up for this. We can build one it's it's -- aides call this one. One more -- says have a try to come up with a cable little lump my iPod or iPhone it's hard to get an audio -- connection what's interesting about this is he wants to basically custom built one. Now look around online he found a pin -- of the dock connector where you connectors -- announced that argues last devices slash iPod can now. You might want to double check some other sources could have heard that art the to be the penthouse style argue announced wrong. Definitely double check we're build table he's a little wary of looking up occasionally dangerous 500 dollar iPhone owners iPod sparking yet. Fortunately. The writer -- actually have much in the way of fear -- or iPhone or iPod and we're gonna play around on the cable -- were ordering those when we get them and we're gonna play around the cable -- we can build up for him like -- like that one. We come back we're gonna through universal laser aids you'll love it Randolph -- it all -- happy with this. Right now though we've got a brief message from the united states air force."

" Okay. Okay. It's."

" We have the traditional standard tape -- you are fabulous new air -- which. Well the end of the show we'll show you how to blast in tennis ball in the stratosphere while almost of the stratosphere speaking of stress through -- the folks united states air force. First sponsoring the show in we also want to talk about something else really cool which is mister Randall new -- The versatile laser which one which you feel -- out right."

" Everybody the forms of ports are gonna want to know this thing works. We're gonna do the double barreled version of it but it's yes. Yes it works very."

" One."

" It works -- like that. Next version of this rested and had to air tanks and reopen -- like -- ratio. Chamber to Merrill that should be completely out of control speaking of completely out of control check out. The beginnings of a new systems at the working of that force right now it's intellectually. The able to record this somewhere other than the."

" Actually kind of intensive workshop."

" it -- episode the system. Hopefully by the time you see this mr. Rendell -- be up and around and feel is healthy and as always it was a favorite email us. System everything three dot com and we'll see you next time."

" They apply that aren't usually have a stewardess on the -- but the fact that."

" Today it's up to the system is brought to you by Netflix. GoDaddy. In the united states air force base better -- a year back at the workshop we're played around with sort of the 2.0 version the Turbo charged version of our. Tennis -- are compressed air cannon. In that -- your questions not all of which in fact many of which are not about your -- and -- kind of stoked about David Randolph is stoked by the home. Probably unconscious under Pao chicken sued because he is as sick as a dog which is a shame. Because he has a really cool always been playing around with the last couple of days go to -- laser -- one of their laser -- systems and actually let me see. Roger you gotta -- look at -- the other people of the loom got a notebook -- there's been would etching metal pitching plastic -- It has been an -- lose -- to talk more about that. Little later on a better Norton in -- watching system. -- here with our there's the media. Their -- we couldn't -- last week because we the we I managed to drop it was tapping it for. The air vents which kind of machine. It is they considerably larger air Canada which means it's pushing it considerably large amount of air through considerably longer barrel which means it should shoot tennis balls considerably farther. Considerably I think is the -- date today. We had a stack of your questions and much questions the forms were started on those -- about choosing parts. And you may notice there is a crazy collection of pipe fittings actually -- gets a shot of the -- over there which you shut those clippings over there. -- You'll notice it's like a giant bank of Lagos. Which means two things one we changed or design a bunch for fun and too. You may think that things -- fit together and they don't would you -- would think about the various coupling you have that available so. Member what was the scheduled forty steadily scheduled one point -- In this case. -- threaded ninety degree hell we've got Cutler's which are basically joining are producing adapters so basically. -- brace yourself you're gonna see much supplies of the screen here you have coupling which joined two pieces of pipe a cap which is the end of pipe. You've got producers which takes you from one's -- to another tease and there's it to you right here somewhere -- up on the screen basically T takes two pipes and since the third out of ninth degree angle. 45 degree l.s ninety degree hills street -- Whichever -- size or do a taper out and wise which is astray it'll say peachy up on the screen policies are available in threaded in -- on threaded versions. To what I can do these look like check out to harp L dot com and we cuts links from plumbing products Glasgow fittings and keep the seat fittings that come up on the website where the just thing about. About a few built on line in the replace what barrels -- you like -- one inch two main streets barrel. Good inside as objects of three's parent here T shirts one inch barrel for smaller objects. Obviously the longer barrels -- smaller barrels on the same air chamber he tend to go longer distances one they why wouldn't you think about putting. Some type of threat coupling them back you Merrill to attach that if you want to be able to exchange barrels on that. But folks asked about what's the scheduled forty business law along with the thing you need to look for all your fittings and all of your pipe that basically determined that its pressure rated pipe. Schedule forty scheduling your part of -- PS of the national right. Size standards basically it's a schedule of information talked about the outside diameter of the pipe verses the fitness. The inside wall so glossy one gram piece by. So -- look -- some schedule 43 inch pipe break here him what. Scheduled for determines is the outside the Amber's gonna be three inches although it's actually if you look at the -- it's up on the screen right now it's actually a little bit bigger than three inches. And then the wall thickness is specified to make it pretty critical is basically this is part of via. -- dimensions that are set them that are standardized. For pressure -- United States is a very similar tables available with a different name in Europe. But basically that these would look at this is these are pair there's the schedule forty fitting in schedule eighty fitting. And schedule -- degree sitting on top look at how much thicker decide ball is basically is scheduled number goes up the thickness of the wall goes up -- a big way. Totaled forty pretty commonly available on talking about if you walk on its its. Pretty much everywhere and I happened to inside this traded like 140 PSI have -- three degrees schedule he's gonna be raided a minimum of 200 PSI Sydney three degrees. As a 122. Schedule 120 exit should be even higher than that. Reason pop out and find the air compressor section of your local hardware store is gonna tap about a 115 PSI. Meaning bigger than that I'm just not ready to play around with if you want to go for big numbers that for the for scheduling your schedule 120 and beware this stuff is a lot more expensive schedule forty the white stuff is gonna do it most of you. Injustices for like the 43 time don't use -- don't use pipe unless it's got the schedule forty readings basically schedule forty and pressure reading on there. -- the bulk of your face that would that. So but it's a shame Randolph is here right now because if you want to be laughing his ass off his father left his ass off casinos has happened. At home but you'll notice that we of this dual sort of W shape here in the measure twice cut once departments. The two outside -- be facing one way and the T. Was actually supposed be facing this ways to do yourself a favor. Lay all this stuff out maybe market up so it's easier if you remember what critic Lewis has never once the stuff together. It's out together permanently and once it's broken or put together the wrong way unless you have another project -- happening something like this. It's useless. This is."

" That -- want to put on the list our sponsors are sponsors help pay the bills which means they helped -- you if you like to show we'd like to ask you use a favor helps -- our sponsors like go to any dot com a great source domain names have been using it for years dollar 99 is the lowest point you can -- A he had domain from -- dot com world class hosting fast and easy website builders and a lot more now through its use of paper until well. Register domain right now and when you could pay for it -- since four. When you check out you're gonna save additional 15%. On any order of 75 dollars or more that's -- goodly amount of cash to some restrictions apply. You can give details on that particular data dot com do us a favor picture piece of the Internet a good -- dot com and when did you -- in co exist for is that lets them know that you're interested what they're doing which means they'll keep paying us to keep doing this for you. But it sounds like that thing right. You'll notice is we are testing the second -- and our fabulous new Swedish intern Camilla highly protected. To sign of her intelligence when working around the system crew and actually bring us through great email from brat. Just -- your show nice really appears to -- geek in me. I'm a little worried about you guys though. He's at CUX which is computer and marine electronics services for -- electronics like oh my body -- does. They were with marine electronics. Usual poisons plus poly proxy solvency -- you guys are clearly careful to mention the need for proper ventilation on the shows a scene unfortunately and that's the big unfortunately. They don't grab whatever toxic delete exploded you're trying not to breathe a deal with your bare hands. Gloves -- there with a proxy strong -- is an exotic sealant they can really permanently mess you up right through this you know inhalation needed fast and you could say hey. I remember having that -- yesterday. I don't like that could. Nights throughout -- text the trial finally fix whatever they're under a penny -- please -- like you to keep your excuse now that -- review our best brad will brad thank you. And I'd actually have a personal collection at the trailer and I trial and I TR ILE globs. Just like when -- in the hospital when my child and actually because of you are probably Obama's only proper adult type respirator and you may have seen these little paper masks. These are great for DOS and the pollen and if right and 95 -- may be for latex fumes for anything other than that these are useless -- what's interesting is there always have paper filters but there's actually charcoal inside of these. And now that works in lots better than some of the stuff you normally see the little paper maps. And now these are replaceable and this is form fitting so which is. Much more intense than we're using took a moment not actually doing anything together should also point -- I do need to look at our. -- because this is not supposed to -- is for ammonia I think we're clear on that formaldehyde that we're clear on and page or go to educating our society it materials. That I gotta check on the can and abrasive blasting including San busting but from also simply use this will do -- perky serious jobs so. -- I had this. This is for you I'm gonna try to fit this now."

" Thank you think about metal -- like that the thing I -- you -- a good thing was doing moving through the."

" a lot easier actually than the little paper maps which are fine for dust -- much useful for anything else. And also the only device it'll help -- set to test it. You could blast through you know what do -- do -- don't have air compressor or COT take a bicycle couple do the job. It just takes a few minutes to get it up to the 120 PSI -- bicycle pump -- got like these super cool their bicycle pump and pump these up pretty high pretty fast. Doug what Patrick failed miserably at doing -- we're talking about ratios specifically somebody asked us to go a little bit more -- that would be ratio the combustion chamber or air chamber to bear so who's gonna shell out pipe for me."

" Yeah we'll we'll and."

" Excellence here -- she gets a gold star energy hitting the media superseding -- a -- it'll never make it to the final version so volume equals -- Times the radius squared so the radius is half of the diameter of the radius squared. At times the length in inches which basically means you're looking for a ratio from the chamber to the barrel. For combustion candidates -- tech dot -- it's still surprise you is amazingly generous and information is one point six to one is the ideal. It's volume ratio for an air Kennedy says he knew -- tons of points and 51 that's what we're doing here is a point 75 to one barrel. And especially if you go with a longer barrel so if you go the longer barrel. Basically your air pressure is working with more distance before the project out leaves the barrel and the acceleration stops. 21 the port one he says it's kind of the sweet spot taking longer than 41 you're basically you're not gonna slow down but you're probably not gonna see anything that. -- useful that point like rapidly rapidly rapidly diminishing returns. Because the projectiles to be out of the barrel before you empty the air tank. So PC -- is available almost every harbors -- the planet's this doesn't big box stores big box stores like Home Depot Lowe's. Generally only have half inch -- three quarter -- two HP VC so three and two and a half inch and fourteen BC kind of tough to find at least. Here in California. It's a start looking around for there's always a hardware store in your town. Where everybody goes -- obscure stuff stainless steel fasteners brass -- really bizarre hardware the place has every tool on the planet -- So you're gonna look for the ultimate -- hardware store. Or you can ask a plumber or -- directory for plumbing supplies. And distributors. And asked them if they stock schedule forty or schedule EP BC in the size you're looking for. Those are pretty much it generally speaking you're gonna look for the will be packed hardware store or plumbing supply via. Distributor. The raging debate or at least a -- discussion on the boards I about -- why I went with the use shape designed rather than a straight line designed. It's very were -- performance boost from going straight line or. Some people were thinking at this does look very structural if you're actually worried about one -- this is pretty early. If you're worried about being not early enough you could go with any basically W joint down here to. Have a stronger joint here or quite frankly the simplest thing is just put it block. In between the barrels and zip -- duct tape around that we're secure and some other fashion. The other is that went with the U shape guns instead of the long. The political. They they very much. Is because it want to end up they seven or eight foot long gone but this one we can definitely. There's definite barrel in the chamber so long we could definitely break this back here from our -- also may actually putting it breaks up on the front of this. Keep it stable but. Quite frankly I'm what's of it would fit my car and Eagles like to be a T 9000 makes me happy in a seven foot long to Google could be 18000."

" These are -- about sprinkler mouse. What you what do we buy it from the valve fourteen other shop is check the manual inside and see with the air pressure reading his reverser. What were using on these ones that are a little bit smaller and a rated for a hundred PSI which is more than enough. Pounds per square -- handle our application but these are diaphragm -- and they're really. Kind of -- Goldberg. Because the pressure comes in here and it leaks up his little tiny hole mystery -- basically creates a -- events. Until the high pressure is on the top of the valve along with the bottom of the -- and he analyzes and presses this. Against the top of the output. Makes sense probably doesn't certainly didn't four mile -- looking at but basically this is pressed down by equalizing pressure from the inlet valve. Through to the top of the valve until the solenoid strikes and and so what strikes it lifts up and uncovers that he tiny little hole. Which allows air into this chamber. And that allows the diaphragm to pop up and let's -- come out. Through via -- if -- that the right way to see her come out so it's a pretty. Bizarre concept what did you -- to make them operate faster you can start opening up to chambers to make wider. Because what. Basically die from a little faster and want to eliminate anything it blocks here there's other browser and actually view. -- vows are considered the highest performance for one of the simplest things you know increase performance on these. Is to to what target. It's about Turbo charging gastric thereabouts Tom there you can use something like a sliding diaphragm valve which unlike -- get into X I've still sorting out how to make one myself but basically Turbo charging means allowing the."

" Air behind the valve -- event faster the last opened faster and spill your compressed air into the -- faster faster. Spilling in the air is good need to try drilling up little tiny hole behind. That's -- solenoid or you convince the back of the valve directly by drilling a hole. Tapping it's inserting -- connector. And put the slogan on the end of it and basically well what big giant hole versus little tiny hole. Big giant hole lets the -- out faster and that basically allows the diaphragm. Valve to open faster which lets the air still out faster they could have been reports."

" They weren't able to tell you about. Systems Netflix sponsored movie of the week one of my favorite movie's actually about motorcycling because I really hated the and easy rider is the world's fastest -- movie proper grow. A act -- older kiwi who built in 1920 India bleeding problems actually -- into the salt flats several times setting land speed records. And you have some crazy stuff for the intake -- heads turned it over his camp and I'm -- start it's really really cool and has the original documentary. He actually compared the can be as played by sir Anthony Hopkins versus -- Lieberman -- in the original documentary offerings to -- speed it's just awesome awesome -- especially like -- if you like motorcycles like going fast if you really get an idea what it's like being -- certain -- that one of the ways you can help us keep -- system used by supporting our sponsors which brings us and Netflix. Along with the world's fastest Indian it that's been like 89999. Other titles including a huge selection of Blu-ray would you could have delivered to your door. They've got forty shipping centers around the country which means most people can get a movie delivered to them in a single shipping date plans start at four dollars and -- united fans but if you want to -- system the hook up. Go to WWW. That Netflix dot com slash system. And you'll get an absolutely free trial it was -- support us by supporting them and yourself a favor check out our Netflix movie of the week. The world's fastest Indian it's a lot of fun."

" Double comments of the forums are up for detective Bob BCA and other safety tip PVCs not -- on the cold it -- gets -- did not fire these if it's colder than ten degrees Celsius also -- degrees Celsius most repellent stay illiquid I'm thinkin'. That commodities here are in the great -- can media up north -- cold. Would repulsive liquid that's really not good for the PVC is it might tend to eat at BBC it's one of the reasons I like actually using the compressed air cannons rather than be flammable cannons -- the what we call that flammable or explosive gases that go boom. Hairspray right. They case twenty manages ago with a compressed air cannon over the combustion powered -- you have to worry about chemicals sprayed her eating up PVC. BCA who apparently is really into this also writes he never leave a cylinder charge is one of the reasons -- actually have the band's built into these. Heat in time -- destroy the integrity of the cylinder yes and leave it charged generally is not a good thing he says. To each other right there he says you save a loud noise that morning or is this of the valve receding yes it is. Jonathan asked is it media more air the tape from multiple shots no attacks because we have a tank connected to this and it receipts in between Johns wondering if you could avoid abilities by adding a few more parts. -- just basically when the air initially or at least not that I found so far yet the noise comes when the valve is filling in that little tiny hole I think and receding he's definitely experiment -- let us know how it works out to be to make -- go away I want to know how to do it because. Like you my dog to be terrified her be generated through. The valve receipts you know us about being -- here the studios have been able. Jeff -- city says this latest episode ability air Canada it reminded me of my coiled -- I've been working on iPhone would make a great project for system. A call that is basically -- he's a very strong magnetic field accelerated -- bullet. I can't get a little terrified about doing things like. I heard bullets anything that I think they actually penetrate I think it has long and it -- my nose maybe question eye socket but. It iron -- just think about that scares me a little bit. Just as the simplest -- to to build -- guns for the disposable camera he's got a set of instructions and Dave before he got six saw this yesterday and said. Build it in big strong red letter so apparently. Dave wants to build -- that you know commitment -- the idea because I -- the plants and they're pretty cool in the immediate -- it was what -- using the kind. Pastor inside of a little kind disposable flashlight while using gigantic can pastor like he used for car stereo. And I just if things go downhill from there so if if if mr. Randolph is up for this. We can build one it's it's -- aides call this one. One more -- says have a try to come up with a cable little lump my iPod or iPhone it's hard to get an audio -- connection what's interesting about this is he wants to basically custom built one. Now look around online he found a pin -- of the dock connector where you connectors -- announced that argues last devices slash iPod can now. You might want to double check some other sources could have heard that art the to be the penthouse style argue announced wrong. Definitely double check we're build table he's a little wary of looking up occasionally dangerous 500 dollar iPhone owners iPod sparking yet. Fortunately. The writer -- actually have much in the way of fear -- or iPhone or iPod and we're gonna play around on the cable -- were ordering those when we get them and we're gonna play around the cable -- we can build up for him like -- like that one. We come back we're gonna through universal laser aids you'll love it Randolph -- it all -- happy with this. Right now though we've got a brief message from the united states air force."

" Okay. Okay. It's."

" We have the traditional standard tape -- you are fabulous new air -- which. Well the end of the show we'll show you how to blast in tennis ball in the stratosphere while almost of the stratosphere speaking of stress through -- the folks united states air force. First sponsoring the show in we also want to talk about something else really cool which is mister Randall new -- The versatile laser which one which you feel -- out right."

" Everybody the forms of ports are gonna want to know this thing works. We're gonna do the double barreled version of it but it's yes. Yes it works very."

" One."

" It works -- like that. Next version of this rested and had to air tanks and reopen -- like -- ratio. Chamber to Merrill that should be completely out of control speaking of completely out of control check out. The beginnings of a new systems at the working of that force right now it's intellectually. The able to record this somewhere other than the."

" Actually kind of intensive workshop."

" it -- episode the system. Hopefully by the time you see this mr. Rendell -- be up and around and feel is healthy and as always it was a favorite email us. System everything three dot com and we'll see you next time."

" They apply that aren't usually have a stewardess on the -- but the fact that."