how much volume in 60' of 3/8ths hose? [Archive]


Pirate4x4.Com > General Tech > General 4x4 Discussion > how much volume in 60' of 3/8ths hose? PDA : how much volume in 60' of 3/8ths hose? Honkylips 05-02-2002, 08:15 AM Just curious how much air 60' of 3/8th air hose holds? Any of you smart types around? Lloyd 05-02-2002, 08:22 AM (0.375/2)^2)pi60*12=79.5 ci. bigdude 05-02-2002, 08:24 AM .0460194 ft3 79.521564 in3 .34424919 gal 1.303124 L 264.38338 tsp :D Old Scout 05-02-2002, 08:24 AM How much @ 125 psi?:flipoff2: Lloyd 05-02-2002, 08:31 AM Some rocket scientist here hooked up 3/8" tygon to house air. Must've been a foot in diameter before it popped. :rolleyes: bigdude 05-02-2002, 08:34 AM If you were to take 79.5 in3 and increase it's pressure from 14.7 to 125 psi the volume it occupies would be reduced to 9.351 in3 Now if you had 79.5 in3 at 125 psi and then brought that volume to atmospheric it would be 676 in3. either way you can only have the volume of 79.52 in3 in the specified hose :flipoff2: :p bigdude 05-02-2002, 08:36 AM Oh yeah- that's assuming constant temperature and the conversion can be derived from the equation PV=NRT :flipoff2: Lloyd 05-02-2002, 08:40 AM Originally posted by bigdude If you were to take 79.5 in3 and increase it's pressure from 14.7 to 125 psi the volume it occupies would be reduced to 9.351 in3 Now if you had 79.5 in3 at 125 psi and then brought that volume to atmospheric it would be 676 in3. either way you can only have the volume of 79.52 in3 in the specified hose :flipoff2: :p ...assuming that the hose doesn't stretch. If it's black iron, fine. But my braided-PVC hose at home visibly swells when you put the pressure on it; maybe goes to 7/16. If so, that'd be 108 in^3. bigdude 05-02-2002, 08:48 AM assuming that the hose doesn't stretch He specified 3/8 so that's what I used, maybe he asked about 3/8" because he's using 1/4" and already took the stretching into account:emb: :p Lloyd 05-02-2002, 09:12 AM ...or maybe stainless braided hydraulic hose. Speaking of that, I just orderd a couple longer brake lines to use with the lift for my truck and that teflon/stainless braid crap is what's coming. After reading here about people popping them, I hope I'm not sorry. Maybe I'd better keep those cracked and nasty looking 25-year old rubber ones for spares. Honkylips 05-02-2002, 10:54 AM He specified 3/8 so that's what I used, maybe he asked about 3/8" because he's using 1/4" and already took the stretching into account Actually, I didn't take anything into account other than the hose is 3/8ths as it sits, unpressurized. I was just curious how much extra airline in an oba setup would add to the overall volume of the system. I knew it wouldn't be enough to notice or anything, but I was just curious to find out an actual number. Thanks for the replies. I should of paid more attention in math class like you guys obviously did.