PDA

View Full Version : using an al80 for airing up tires.



bigman241
06-07-2010, 19:37
I have a jeep I am setting up for offroading. Which when you go on rock and off road trails you let mos to the air out of your tires.

I was wondering if in place of a costly high price inflation system I could mount an al80 tank and use it to air up my tires. Of course I see some issues 3000 psi being one of them.

Has any one done this or know how to get the tank to fit the tire valve and reduce the psi?

Rileybri
06-07-2010, 20:21
I have a jeep I am setting up for offroading. Which when you go on rock and off road trails you let mos to the air out of your tires.

I was wondering if in place of a costly high price inflation system I could mount an al80 tank and use it to air up my tires. Of course I see some issues 3000 psi being one of them.

Has any one done this or know how to get the tank to fit the tire valve and reduce the psi?

yes (http://www.scubatoys.com/store/detail.asp?PRODUCT_ID=TireInflator)

fire diver
06-07-2010, 20:34
Yep, I carry a tire inflator adaptor in my dive box. I've used it several times. Works great.

bigman241
06-07-2010, 20:46
any idea how many times a al80 would fill a 31/10,5/15 goodyear duratrac? I know size space void and volume but a rough number would be cool

So for the key chain. I need a firststage with a inflator hose on it. Might be a task for one of the used regs we bought from the pawn shop.

jbres1
06-07-2010, 21:18
i have an old Sherwood that I set up to fill tires.
I used an old Oasis first stage, a small button pressure gauge and a 34" drysuit inflator hose for the set up.
Works like a charm.
As to the air in the tires, I have no idea.

Jim Breslin

navyhmc
06-07-2010, 21:58
Are you looking for an auntomatic self-inflating system? Complex and expensive, but worth getting the real McCoy.

Just to inflat a tire: Yes the tank works well. How many times? What size tires? In this case you're limited more by the 77.4 cu ft that the psi.

If your tire is a 34" dia on a 16" rim, you could probably fill up 8 tires from completely flat.

Jack Hammer
06-08-2010, 01:30
I remember 10 years ago there were some Isuzu Amigo/Rodeo 4x4 guys who used 30cf scuba tanks to refill a few vehicles tires. There were also some plans floating around online for an inexpensive HP compressor system that used some smaller scuba, CO2, or fire extinguisher tanks that would easily and quickly fill all their tires. If you use a scuba tank it is extremely important that you have it securely tied down with the valve facing toward the front of the vehicle. You don't want it bouncing around and becoming a missile.

IIRC, a 32" offroad tire needs ~3-4cf of air to fill it from empty. If that's correct (it's been a while since I was into off roading) a 13cf should be enough to at minimum get you from all 4 tires at a low pressure to a pressure high enough for the road.

An al80 holds about 77.4cf of air at 3000psi. If you take one of you al80's and write down the pressure before you start, then fill a tire and write down the 80's pressure when you're done, it's a simple calculation to figure out how many cubic feet were used.

77.4 /3000 = 0.0258
0.0258 x (pressure used) = cubic feet needed to fill one tire.
Multiply that x4 and you know the minimum size to fill all four tires.

Example: say your tank had 2700psi in it when you start and after you finish filling the tire your tank has 2550psi in it.

2700-2550=150psi used
150 x 0.0258 = 3.87cf
So it would take 3.87cf to fill one tire. Multiply x4 and you get 15.48cf needed for to fill all 4 tires. So in this example you'd want at minimum a full 19cf bottle (closest size available) to have enough air for all 4 tires. Oh, and yes, a scuba tank tire filler has enough pressure to reseat a tires bead to the rim. Been there, done that, use soapy water on the bead, it works fast and well but uses a lot of air.

bigman241
06-08-2010, 07:12
so from my figuring using what you figured I could fill all four tires about 4 times. Though I am sure that last fill would put you on your toes.
Thanks jack glad your better at math then me.
I remember 10 years ago there were some Isuzu Amigo/Rodeo 4x4 guys who used 30cf scuba tanks to refill a few vehicles tires. There were also some plans floating around online for an inexpensive HP compressor system that used some smaller scuba, CO2, or fire extinguisher tanks that would easily and quickly fill all their tires. If you use a scuba tank it is extremely important that you have it securely tied down with the valve facing toward the front of the vehicle. You don't want it bouncing around and becoming a missile.

IIRC, a 32" offroad tire needs ~3-4cf of air to fill it from empty. If that's correct (it's been a while since I was into off roading) a 13cf should be enough to at minimum get you from all 4 tires at a low pressure to a pressure high enough for the road.

An al80 holds about 77.4cf of air at 3000psi. If you take one of you al80's and write down the pressure before you start, then fill a tire and write down the 80's pressure when you're done, it's a simple calculation to figure out how many cubic feet were used.

77.4 /3000 = 0.0258
0.0258 x (pressure used) = cubic feet needed to fill one tire.
Multiply that x4 and you know the minimum size to fill all four tires.

Example: say your tank had 2700psi in it when you start and after you finish filling the tire your tank has 2550psi in it.

2700-2550=150psi used
150 x 0.0258 = 3.87cf
So it would take 3.87cf to fill one tire. Multiply x4 and you get 15.48cf needed for to fill all 4 tires. So in this example you'd want at minimum a full 19cf bottle (closest size available) to have enough air for all 4 tires. Oh, and yes, a scuba tank tire filler has enough pressure to reseat a tires bead to the rim. Been there, done that, use soapy water on the bead, it works fast and well but uses a lot of air.

bigman241
06-08-2010, 07:15
ohh I figured I would lay it valve back so if I had a back seat driver I could just wack it and be done with the back seat driver. OR tie a rope to the back seat and put he valve forward. And drag them out. lol

TwIsTeD
06-08-2010, 07:17
Just get an electric on board air compressor for the jeep. You can air up tires and run air tools without running out of air.
Jeeps are small, they run out of storage space fast. Put an electric air compressor under the hood and mount an air tank under the jeep, It'll cost you about $400 bucks and you'll never have to bother with it again.

It your dead set on a tank system, go for a CO2 tank, 3X the tire fills from a smaller tank.

I know a thing or two about jeeps...

http://sphotos.ak.fbcdn.net/hphotos-ak-snc3/hs023.snc3/11041_102398389787340_100000515372741_63745_289154 2_n.jpg

http://hphotos-snc3.fbcdn.net/hs003.snc3/11041_102650103095502_100000515372741_69500_458963 6_n.jpg

fire diver
06-08-2010, 08:39
Ooooohhhh, nice articulation on your crawler!

TwIsTeD
06-08-2010, 09:52
Thanks, I put a lot of hard work into that Jeep.
The angle of that picture is decieving, that front tire is 40" off the ground.

bigman241
06-08-2010, 10:30
sweet jeep. Have you been to Jeep Forum - Jeep Enthusiast Network (http://www.jeepforum.com?) Good place and good bunch of guys.
Just get an electric on board air compressor for the jeep. You can air up tires and run air tools without running out of air.
Jeeps are small, they run out of storage space fast. Put an electric air compressor under the hood and mount an air tank under the jeep, It'll cost you about $400 bucks and you'll never have to bother with it again.

It your dead set on a tank system, go for a CO2 tank, 3X the tire fills from a smaller tank.

I know a thing or two about jeeps...

http://sphotos.ak.fbcdn.net/hphotos-ak-snc3/hs023.snc3/11041_102398389787340_100000515372741_63745_289154 2_n.jpg

http://hphotos-snc3.fbcdn.net/hs003.snc3/11041_102650103095502_100000515372741_69500_458963 6_n.jpg

navyhmc
06-08-2010, 13:02
I know a thing or two about jeeps...

http://sphotos.ak.fbcdn.net/hphotos-ak-snc3/hs023.snc3/11041_102398389787340_100000515372741_63745_289154 2_n.jpg

http://hphotos-snc3.fbcdn.net/hs003.snc3/11041_102650103095502_100000515372741_69500_458963 6_n.jpg

A thing or two???! Looks like you got at least a book or two of things on me! Very, VERY Nice! :smiley20: :smiley20: :smiley20:

TwIsTeD
06-08-2010, 16:43
sweet jeep. Have you been to Jeep Forum - Jeep Enthusiast Network (http://www.jeepforum.com?) Good place and good bunch of guys.

I go by TwIsTeD OfF (http://jeepspace.jeepforum.com/TwIsTeD%20OfF) over there. Specs on my jeep should be listed in that link as well.

I lurk around over there, looking for intresting stuff. I don't post much, as there are too many people who think they know it all.

bigman241
06-08-2010, 23:11
tell me about it. I can't even as a question about tires without getting 5 people questioning every little thing I say or think about what tire.

sweet jeep. Have you been to Jeep Forum - Jeep Enthusiast Network (http://www.jeepforum.com?) Good place and good bunch of guys.

I go by TwIsTeD OfF (http://jeepspace.jeepforum.com/TwIsTeD%20OfF) over there. Specs on my jeep should be listed in that link as well.

I lurk around over there, looking for intresting stuff. I don't post much, as there are too many people who think they know it all.

fire diver
06-09-2010, 07:47
tell me about it. I can't even as a question about tires without getting 5 people questioning every little thing I say or think about what tire.

sweet jeep. Have you been to Jeep Forum - Jeep Enthusiast Network (http://www.jeepforum.com?) Good place and good bunch of guys.

I go by TwIsTeD OfF (http://jeepspace.jeepforum.com/TwIsTeD%20OfF) over there. Specs on my jeep should be listed in that link as well.

I lurk around over there, looking for intresting stuff. I don't post much, as there are too many people who think they know it all.

Thats how it is on most boards. Just have to live with it.

BSea
06-09-2010, 07:58
I know a thing or two about jeeps...



http://hphotos-snc3.fbcdn.net/hs003.snc3/11041_102650103095502_100000515372741_69500_458963 6_n.jpgOk, I'm impressed, and I'm a yota guy :). That is one of the better looking jeeps I've seen.

Is that your son in the 1st pic? If so, he has a great vehicle when he turns 16.

bigman241
06-09-2010, 08:28
could be worst I go to the store yesterdat after having all 5 patched. One had an old plug in it and I think they took it as the leak. When I went out of the store I noticed it was flat. Crappy thing is my spare has to big of a hole in it to fix. SO new tires are a coming. Though I am going to let her sit till aug or sept so I can still get my steel 130s. Figure I will drive the truck and give her some time to sit and not be running here 2k a month

Rileybri
06-09-2010, 12:08
tell me about it. I can't even as a question about tires without getting 5 people questioning every little thing I say or think about what tire.

sweet jeep. Have you been to Jeep Forum - Jeep Enthusiast Network (http://www.jeepforum.com?) Good place and good bunch of guys.

I go by TwIsTeD OfF (http://jeepspace.jeepforum.com/TwIsTeD%20OfF) over there. Specs on my jeep should be listed in that link as well.

I lurk around over there, looking for intresting stuff. I don't post much, as there are too many people who think they know it all.


Right as cuz that never happens on this forum to you! how is that Dbls. thread going for ya?:smiley36::smiley36:

bigman241
06-09-2010, 14:52
I was wanting for it But WOULD HAVE NEVER THOUGHT IT WOULD BE YOU WHO BROUGHT IT UP :smilie39:

On here I ask a stupied get me killed question and you guys say hey dumba**. We discuss it and you tell me I am going down the road to meeting the scuba diven reaper. After it is over it is back to the good old boys. Over there if you question anything or want to do something they disagree with. They hate you and for life. I would rather ask a question and be told I am going about it stupid then not ask and my dad post Tim died as he could not swim 2 steel 130s off the bottom. As I am sure none of you want that post. Could be worst I could be wanting to solo dive doubles in a cave at 130 feet. :smiley36: I look it like Jeep Forum - Jeep Enthusiast Network (http://www.jeepforum.com) is much like scubaboard. Your ok as long as you do not start questioning someones thinking or wanting to do something different.
Kind of like arguing with friends vs family. Over there and on SB you argue yell scream and go to or corner likely to never talk to your" friend again"
Where here you argue fight yell and go to your corner and then come out and shake hands like family. Though maybe with your hand on the other guys valve. :smiley36:

So what extra gear do I need to dive wrecks and penetrate:smilie40::smilie40::smilie39:.

tell me about it. I can't even as a question about tires without getting 5 people questioning every little thing I say or think about what tire.

sweet jeep. Have you been to Jeep Forum - Jeep Enthusiast Network (http://www.jeepforum.com?) Good place and good bunch of guys.

I go by TwIsTeD OfF (http://jeepspace.jeepforum.com/TwIsTeD%20OfF) over there. Specs on my jeep should be listed in that link as well.

I lurk around over there, looking for intresting stuff. I don't post much, as there are too many people who think they know it all.


Right as cuz that never happens on this forum to you! how is that Dbls. thread going for ya?:smiley36::smiley36:

Jack Hammer
06-09-2010, 18:04
I was wanting for it But WOULD HAVE NEVER THOUGHT IT WOULD BE YOU WHO BROUGHT IT UP :smilie39:

On here I ask a stupied get me killed question and you guys say hey dumba**. We discuss it and you tell me I am going down the road to meeting the scuba diven reaper. After it is over it is back to the good old boys. Over there if you question anything or want to do something they disagree with. They hate you and for life. I would rather ask a question and be told I am going about it stupid then not ask and my dad post Tim died as he could not swim 2 steel 130s off the bottom. As I am sure none of you want that post. Could be worst I could be wanting to solo dive doubles in a cave at 130 feet. :smiley36: I look it like Jeep Forum - Jeep Enthusiast Network (http://www.jeepforum.com) is much like scubaboard. Your ok as long as you do not start questioning someones thinking or wanting to do something different.
Kind of like arguing with friends vs family. Over there and on SB you argue yell scream and go to or corner likely to never talk to your" friend again"
Where here you argue fight yell and go to your corner and then come out and shake hands like family. Though maybe with your hand on the other guys valve. :smiley36:

So what extra gear do I need to dive wrecks and penetrate:smilie40::smilie40::smilie39:.

tell me about it. I can't even as a question about tires without getting 5 people questioning every little thing I say or think about what tire.

sweet jeep. Have you been to Jeep Forum - Jeep Enthusiast Network (http://www.jeepforum.com?) Good place and good bunch of guys.

I go by TwIsTeD OfF (http://jeepspace.jeepforum.com/TwIsTeD%20OfF) over there. Specs on my jeep should be listed in that link as well.

I lurk around over there, looking for intresting stuff. I don't post much, as there are too many people who think they know it all.


Right as cuz that never happens on this forum to you! how is that Dbls. thread going for ya?:smiley36::smiley36:
The gear itself is not necessarily dramatically different. What is different is how some of it is used/worn and why and some of the techniques used. In a wreck diving class they should cover gas management, equipment usage/setup, and the hazards that many recreational divers may not be aware of inside a wreck, such as silt, entanglement, and getting lost/trapped. I'd recomment finding a good instructor who'll teach you on real wrecks for the class when you're ready and avoiding a class that is taught in a quarry.

bigman241
06-09-2010, 19:59
That was a joke buddy but thanks for the info.

I was wanting for it But WOULD HAVE NEVER THOUGHT IT WOULD BE YOU WHO BROUGHT IT UP :smilie39:

On here I ask a stupied get me killed question and you guys say hey dumba**. We discuss it and you tell me I am going down the road to meeting the scuba diven reaper. After it is over it is back to the good old boys. Over there if you question anything or want to do something they disagree with. They hate you and for life. I would rather ask a question and be told I am going about it stupid then not ask and my dad post Tim died as he could not swim 2 steel 130s off the bottom. As I am sure none of you want that post. Could be worst I could be wanting to solo dive doubles in a cave at 130 feet. :smiley36: I look it like Jeep Forum - Jeep Enthusiast Network (http://www.jeepforum.com) is much like scubaboard. Your ok as long as you do not start questioning someones thinking or wanting to do something different.
Kind of like arguing with friends vs family. Over there and on SB you argue yell scream and go to or corner likely to never talk to your" friend again"
Where here you argue fight yell and go to your corner and then come out and shake hands like family. Though maybe with your hand on the other guys valve. :smiley36:

So what extra gear do I need to dive wrecks and penetrate:smilie40::smilie40::smilie39:.

tell me about it. I can't even as a question about tires without getting 5 people questioning every little thing I say or think about what tire.

sweet jeep. Have you been to Jeep Forum - Jeep Enthusiast Network (http://www.jeepforum.com?) Good place and good bunch of guys.

I go by TwIsTeD OfF (http://jeepspace.jeepforum.com/TwIsTeD%20OfF) over there. Specs on my jeep should be listed in that link as well.

I lurk around over there, looking for intresting stuff. I don't post much, as there are too many people who think they know it all.


Right as cuz that never happens on this forum to you! how is that Dbls. thread going for ya?:smiley36::smiley36:
The gear itself is not necessarily dramatically different. What is different is how some of it is used/worn and why and some of the techniques used. In a wreck diving class they should cover gas management, equipment usage/setup, and the hazards that many recreational divers may not be aware of inside a wreck, such as silt, entanglement, and getting lost/trapped. I'd recomment finding a good instructor who'll teach you on real wrecks for the class when you're ready and avoiding a class that is taught in a quarry.