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Air Gun Home Forum Index » General Air Gun Questions and Topics » PCP charging question. Goto page 1, 2  Next    View previous topic :: View next topic  PCP charging question.   Posted: Wed Dec 14, 2011 5:23 pm mod90 Veteran Member Joined: 04 Jun 2011 Posts: 279 I'm getting a 80 cu.ft. scuba tank rated @ 4500 psi. I'd like to know how many times it can fill a 180cc reservoir to 195 bar from 100 bar. I'm getting confused as a SOB trying to figure this out So to anyone out there, HELLLLLLP.   Posted: Wed Dec 14, 2011 7:14 pm SMP Silver Status Member Joined: 04 Feb 2011 Posts: 1183 Location: Just south of "Out There"- Land O Lakes Ontario Try this handy dandy calc http://calc.sikes.us/2/ _________________ Sean   Posted: Wed Dec 14, 2011 7:19 pm SMP Silver Status Member Joined: 04 Feb 2011 Posts: 1183 Location: Just south of "Out There"- Land O Lakes Ontario I got 60 fills with your set up _________________ Sean   Posted: Wed Dec 14, 2011 7:24 pm mod90 Veteran Member Joined: 04 Jun 2011 Posts: 279 Thanks for the link . That calc says I can get 44 fills off of that tank Do you think that sounds about right?   Posted: Wed Dec 14, 2011 7:57 pm SMP Silver Status Member Joined: 04 Feb 2011 Posts: 1183 Location: Just south of "Out There"- Land O Lakes Ontario no using your numbers I'm getting different numbers 80 CF (most 4500psi tanks are 88CU) 100Bar=1450 psi 195 Bar = 2828psi (I used 190 bar in my first calc) Using those numbers I get 54 fills _________________ Sean   Posted: Wed Dec 14, 2011 8:13 pm MSEO Member Joined: 26 Nov 2011 Posts: 30 I get 49 fills both from that calc and from crunching the numbers in a spreadsheet.   Posted: Wed Dec 14, 2011 8:33 pm SMP Silver Status Member Joined: 04 Feb 2011 Posts: 1183 Location: Just south of "Out There"- Land O Lakes Ontario Agreed that's what I get when I use 80CuF for tank volume. Mod check the volume on that 4500 tank. Carbon fiber? _________________ Sean   Posted: Wed Dec 14, 2011 9:31 pm mod90 Veteran Member Joined: 04 Jun 2011 Posts: 279 Not carbon, but built for deep exploratory diving, the steel is approx 3/4 inch thick. Or so the supplier tells me. Haven't bought it yet, but I really got to look closely at it. But if those numbers are relatively accurate, one could do a lot of shooting before recharging the tank. I'm prayig that both the tank and those numbers are accurate. Last edited by mod90 on Wed Dec 14, 2011 9:42 pm; edited 1 time in total   Posted: Wed Dec 14, 2011 9:40 pm SMP Silver Status Member Joined: 04 Feb 2011 Posts: 1183 Location: Just south of "Out There"- Land O Lakes Ontario 3/4" thick....OMG Sign yourself up for the hernia Op now Ya thats a lot of shooting _________________ Sean   Posted: Wed Dec 14, 2011 9:50 pm mod90 Veteran Member Joined: 04 Jun 2011 Posts: 279 I got no plans to lift that sucker if i take it. I'm gonna roll it wherever it's gotta go. provided I can lift it out the car when I get it home   Posted: Thu Dec 15, 2011 1:43 pm mod90 Veteran Member Joined: 04 Jun 2011 Posts: 279 I checked the dive shop owner,& it turns out he also has a pair of 60 cu. ft. 4500 psi tanks up for sale. So I'm going with that instead, picking them up tomorrow. Should be a little easier to lug around.   Posted: Thu Dec 15, 2011 2:06 pm SMP Silver Status Member Joined: 04 Feb 2011 Posts: 1183 Location: Just south of "Out There"- Land O Lakes Ontario those are nice size tanks. we use those on scba _________________ Sean   Posted: Fri Dec 16, 2011 11:13 pm mod90 Veteran Member Joined: 04 Jun 2011 Posts: 279 BTW, anyone know where I can find a DIN valve adapter w/cable for the AT44-10?   Posted: Sat Dec 17, 2011 8:15 am SMP Silver Status Member Joined: 04 Feb 2011 Posts: 1183 Location: Just south of "Out There"- Land O Lakes Ontario When you say DIN type do you mean a 'K" type which uses a yoke and a clamping screw. or a "J" type which has screw on threads ....both are actually DIN type....agreed it makes it confusing I assume the hatsan uses a "foster" fitting to fill so thats easy Last edited by SMP on Sat Dec 17, 2011 8:24 am; edited 1 time in total _________________ Sean   Posted: Sat Dec 17, 2011 8:23 am SMP Silver Status Member Joined: 04 Feb 2011 Posts: 1183 Location: Just south of "Out There"- Land O Lakes Ontario 'J" type http://wop.pyramydair.com/s/a/Scuba_charging_kit_DIN_valve/2950 "K" type http://scopesandammo.com/storefront/product_info.php/scuba-fill-yokescuba-fill-station-p-331 Where are you ordering from Mod? _________________ Sean PCP charging question.     Air Gun Home Forum Index » General Air Gun Questions and Topics You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum All times are GMT - 5 Hours   Page 1 of 2   Goto page 1, 2  Next All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First  Select a forum Main Forums----------------AirGunHome Q&AGeneral Air Gun Questions and TopicsPicture GalleryTarget Shooting: Casual, Fun and CompetitionHunting, Pest Control, Varminting People/Events/Airgun Issue Discussion----------------Introduce YourselfThe BS TopicClubs/Events/Regional/Political Airgun Issues Maintenance, Modification and Reviews----------------RiflesPistolsAntique, Collector and Novelty AirgunsBB GunsPellets/AmmoOpticsAccessoriesAirgun Smithing Buy, Sell or Trade Forums----------------For SaleWant to Buy   Note: If you are seeing "Please enter your username and password to log in." 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