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Posted by SteveB on March 20, 2008, 1:04 pm
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I guess my question is mostly about oxygen bottles. IIRC, propane,
acetylene and CO2 are all liquid inside the bottle and have to be mounted
vertically. OR, could they be mounted at a 45, particularly an acetylene?
My trailer has an O2 and an acetylene mounted vertically. They both were
mounted with plate that is about 3/4" thick, and came from some salvaged
use. They look like crap, and were gorilla welded on. But I don't like
their high profile. The O2 is a full sized tall tank, and the acetylene is
stubby, about waist high, but not the fat round one. If I stay with
propane, I'll use the shorter tanks anyway, or go with a stubby fat one that
won't stand that high anyway. But the O2 just sticks up there way high, and
I don't like the leverage it has that way in sudden maneuver driving
situations.
I believe that I could mount the O2 horizontally, and it wouldn't matter.
Is that correct? I don't use a CO2 on the rig, but down the line, who
knows. I do have an acetylene bottle there, but may go to propane. Would
the acetylene be okay mounted at a 45?
Steve
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Posted by Grant Erwin on March 20, 2008, 11:18 am
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SteveB wrote:
> I guess my question is mostly about oxygen bottles. IIRC, propane,
> acetylene and CO2 are all liquid inside the bottle and have to be mounted
> vertically. OR, could they be mounted at a 45, particularly an acetylene?
>
> My trailer has an O2 and an acetylene mounted vertically. They both were
> mounted with plate that is about 3/4" thick, and came from some salvaged
> use. They look like crap, and were gorilla welded on. But I don't like
> their high profile. The O2 is a full sized tall tank, and the acetylene is
> stubby, about waist high, but not the fat round one. If I stay with
> propane, I'll use the shorter tanks anyway, or go with a stubby fat one that
> won't stand that high anyway. But the O2 just sticks up there way high, and
> I don't like the leverage it has that way in sudden maneuver driving
> situations.
>
> I believe that I could mount the O2 horizontally, and it wouldn't matter.
> Is that correct? I don't use a CO2 on the rig, but down the line, who
> knows. I do have an acetylene bottle there, but may go to propane. Would
> the acetylene be okay mounted at a 45?
Acetylene is not OK at a 45 according to what I've been told.
Did someone actually weld on the cylinders? Or are the cylinders mounted
on mounts which were "gorilla welded"?
Steve, sometimes cylinders in the larger sizes are much cheaper to refill
per cubic foot than in the smaller sizes. For example, I recently priced
getting a 125 cf cylinder refilled with C25. I was quoted $50. About three
weeks later, I priced getting a 251 cf cylinder refilled with C25 - $55.
For five bucks more I get double the gas.
Your oxygen cylinder is probably a 251 cf. The acetylene cylinder you can
look up from this table:
Welding Cylinder Data (capacity is in cubic feet @ 2100 psi)
Oxygen / Argon / Helium / Other High Pressure
Tank Designator Capacity Height Dia. (height w/o cap & valve)
K 251 51" 9"
S 156 46" 7 3/8" ;; always owner cylinders
M 125 47" 7"
Q 92 30" 7 1/8" ;; always owner cylinders
R 20 14" 5 1/4"
Acetylene
Tank Designator Capacity Height Dia.
#5 350 45" 12"
#4 150 38" 8"
#3 75 29" 7"
If you get a propane cylinder, I recommend a 100 pounder e.g.:
http://www.lowes.com/lowes/lkn?action=productDetail&productId=28370-743-303953
Grant
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Posted by SteveB on March 20, 2008, 1:28 pm
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> Did someone actually weld on the cylinders? Or are the cylinders mounted
> on mounts which were "gorilla welded"?
> Grant
Just the mounts. I'll take some pictures and post them at Flickr before I
cut them off. They're stout, but for a welder, they are crudely done.
Welding a cylinder directly sounds like an automatic Darwin award
nomination. They've been on there so long, the oxygen was hydroed in '96.
Gonna be interesting to see what they will do on new cylinders.
Steve
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Posted by Grant Erwin on March 20, 2008, 12:10 pm
Please log in for more thread options SteveB wrote:
> They've been on there so long, the oxygen was hydroed in '96.
I swapped one the other day was hydroed in '69. No problem. On many
cylinders, the hydrotest cost is factored in.
Grant
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Posted by Brent on March 20, 2008, 7:53 pm
Please log in for more thread options > SteveB wrote:
> > I guess my question is mostly about oxygen bottles. IIRC, propane,
> > acetylene and CO2 are all liquid inside the bottle and have to be mounted
> > vertically. OR, could they be mounted at a 45, particularly an acetylene?
>
> > My trailer has an O2 and an acetylene mounted vertically. They both were
> > mounted with plate that is about 3/4" thick, and came from some salvaged
> > use. They look like crap, and were gorilla welded on. But I don't like
> > their high profile. The O2 is a full sized tall tank, and the acetylene is
> > stubby, about waist high, but not the fat round one. If I stay with
> > propane, I'll use the shorter tanks anyway, or go with a stubby fat one that
> > won't stand that high anyway. But the O2 just sticks up there way high, and
> > I don't like the leverage it has that way in sudden maneuver driving
> > situations.
>
> > I believe that I could mount the O2 horizontally, and it wouldn't matter.
> > Is that correct? I don't use a CO2 on the rig, but down the line, who
> > knows. I do have an acetylene bottle there, but may go to propane. Would
> > the acetylene be okay mounted at a 45?
>
> Acetylene is not OK at a 45 according to what I've been told.
>
> Did someone actually weld on the cylinders? Or are the cylinders mounted
> on mounts which were "gorilla welded"?
>
> Steve, sometimes cylinders in the larger sizes are much cheaper to refill
> per cubic foot than in the smaller sizes. For example, I recently priced
> getting a 125 cf cylinder refilled with C25. I was quoted $50. About three
> weeks later, I priced getting a 251 cf cylinder refilled with C25 - $55.
> For five bucks more I get double the gas.
>
> Your oxygen cylinder is probably a 251 cf. The acetylene cylinder you can
> look up from this table:
>
> Welding Cylinder Data (capacity is in cubic feet @ 2100 psi)
>
> Oxygen / Argon / Helium / Other High Pressure
> Tank Designator Capacity Height Dia. (height w/o cap & valve)
> K 251 51" 9"
> S 156 46" 7 3/8" ;; always owner cylinders
> M 125 47" 7"
> Q 92 30" 7 1/8" ;; always owner cylinders
> R 20 14" 5 1/4"
>
> Acetylene
> Tank Designator Capacity Height Dia.
> #5 350 45" 12"
> #4 150 38" 8"
> #3 75 29" 7"
>
> If you get a propane cylinder, I recommend a 100 pounder e.g.:
>
> http://www.lowes.com/lowes/lkn?action=productDetail&productId=28370-7...
>
> Grant
thank you for the table that was handy and convenient
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> acetylene and CO2 are all liquid inside the bottle and have to be mounted
> vertically. OR, could they be mounted at a 45, particularly an acetylene?
>
> My trailer has an O2 and an acetylene mounted vertically. They both were
> mounted with plate that is about 3/4" thick, and came from some salvaged
> use. They look like crap, and were gorilla welded on. But I don't like
> their high profile. The O2 is a full sized tall tank, and the acetylene is
> stubby, about waist high, but not the fat round one. If I stay with
> propane, I'll use the shorter tanks anyway, or go with a stubby fat one that
> won't stand that high anyway. But the O2 just sticks up there way high, and
> I don't like the leverage it has that way in sudden maneuver driving
> situations.
>
> I believe that I could mount the O2 horizontally, and it wouldn't matter.
> Is that correct? I don't use a CO2 on the rig, but down the line, who
> knows. I do have an acetylene bottle there, but may go to propane. Would
> the acetylene be okay mounted at a 45?