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Post by bigiron on Jul 4, 2015 17:17:26 GMT -5
There was a thread here some time ago with photos of a cooling rod. Can someone link it for me? I want to make one.
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Post by 12ptdroptine on Jul 4, 2015 19:12:28 GMT -5
Get ahold of Rossman40 on here. He can probably get you one cheaper than you can get it yourself . And faster I am sure
Drop
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Post by dannoboone on Jul 4, 2015 22:05:53 GMT -5
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Post by Richard on Jul 5, 2015 8:25:05 GMT -5
For a .45 barrel, a 7/16 aluminum rod is what you need. Mine is actually a 1/2" rod turned down to a little closer fit than the 7/16 but the 7/16 will work. The rod need to be as close to the lands as possible for the heat to transfer. Herman once tried a 3/8 rod in his .50 and it did practically nothing.
Richard
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Post by norseman1 on Jul 5, 2015 11:03:10 GMT -5
I do a lot of prairie dog shooting with AR`s.Needless to say pumping a lot of rounds down range fast can super heat a barrel.I have 20Lb co2 cylinders with a hose to cool off the barrels with.Takes about 10 seconds to cool off an untouchable barrel.We shoot thousands of rounds in a few days and have found no difference in POA from doing this.
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Post by al53 on Jul 5, 2015 11:27:16 GMT -5
I have a few bottles from paint ball that are for nitrogen....I rigged up a regulator and a air nozzle and it cools a barrel fast...the barrel is ice cold after a few squirts and the nitro is dry...
I have a cool rod also that I made and a friend owns a dry ice place and I get dry ice and use in the ice chamber to cool the rod...I use this when shooting at home and the Nitro when at the club range as its easy to transport...
these are used on muzzies using BH 209....
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Post by Richard on Jul 5, 2015 12:33:49 GMT -5
This is what is good about this forum........Multiple ideas. Probably the one I use (and yes, got the original concept from Edge) is the cheapest one. Probably get the piece of aluminum rod for under $10.00 and you can use an ice chest and just stuff the rod in sideways. (along with your favorite beverage)
Richard
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Post by kennacl55 on Jul 9, 2015 22:10:35 GMT -5
Has anyone used a eston 27/64 arrow shaft with frozen water as a cooling rod? I think the diameter would be .421 and you could make a insulated carrier to use while shooting in hot weather.
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Post by rambler on Jul 10, 2015 7:16:22 GMT -5
Has anyone tried a cooling 'wrap' around the barrel?
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Post by dannoboone on Jul 10, 2015 9:10:00 GMT -5
Has anyone tried a cooling 'wrap' around the barrel? Seems like someone once mentioned using a damp towel they kept on ice when not in use. |
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Post by rambler on Jul 10, 2015 9:11:48 GMT -5
Has anyone tried a cooling 'wrap' around the barrel? Seems like someone once mentioned using a damp towel they kept on ice when not in use. My only issue with the cooling rod is the possibility of getting the inside of the barrel slightly wet.
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Post by Deleted on Jul 10, 2015 11:06:52 GMT -5
not an issue
whe its pulled from the cooler wipe it off with a towel and have at it..
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Post by Richard on Jul 10, 2015 13:19:25 GMT -5
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Post by rambler on Jul 10, 2015 13:48:10 GMT -5
Rambler...............Do you think that after some five years and over 5,000 ML shots using the cooling rod that there is a issue with the inside of the barrel?  ? Come on! My cooler has a rubber wiper on the inside which sort of squeegees off the loose water. I then give it "smart" shake. Run a towel over it a couple of times and end with a wipe with a paper towel and insert in the bore. When it comes out, it warm from having extracted the heat from the barrel. The inside of the barrel is NOT ice cold. In order to have that effect, I would have to re-cool the rod and put it in again. I do run a loose fitting cotton patch in and out one time (one 2 x 2" cotton patch lasts my entire session) Actually I feel no moisture on the patch at all. The cold wet towel on the outside of the barrel? ?Been there and done that. You want to get the barrel cooled from the inside out. Plus, it is impossible to get the towel between the barrel and the stock? ??No? The arrow shaft? NG.............it hollow. You need the density of the rod to hold enough cold to absorb the heat from the barrel. If you want even more cooling, get a brass or better yet a bronze rod as they hold more "cooling power" than aluminum................but cost considerably more and the difference in the effect is minimal. Richard Richard, I would be the last person to challenge the length and breadth of your acquired knowledge. I admire and respect your experience as well as the many others on this board.
I believe hillbill summed up what your replied stated "not an issue when its pulled from the cooler wipe it off with a towel and have at it."
It was only a suggestion on my part and I did assume that there were those who had "been there and done that".
Thanks for the reply
Steve
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Post by Deleted on Jul 10, 2015 13:57:18 GMT -5
Richard you might try some of this  Some of your keys appear to be sticking. |
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Post by Deleted on Jul 10, 2015 14:56:12 GMT -5
When I used to shoot sabots and before I started using a cool rod I used a 12 volt air pump with 1/4" flexible tubing.I stuck it in the barrel all the way to the breech plug. It did a pretty good job of cooling things down...The cooling rod works the best...wipe it off and you don't have to worry about condensation
Zen
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Post by Richard on Jul 10, 2015 16:39:38 GMT -5
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Post by Deleted on Jul 10, 2015 16:51:58 GMT -5
Just seeing if you can hear me!! Keep ignoring me and giving me a complex  |
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Post by rossman40 on Jul 11, 2015 15:42:30 GMT -5
The material you choose is important. Pure copper (100 series) has a thermal coefficient of like 400 but with most metals when you start alloying it the thermal coefficient goes south. Pure aluminum has thermal coefficient of 225 but if you look at it hard it will bend. I went with 6061 because it has the strength needed, a thermal coefficient still of like 165, and is fairly cheap (6061 aluminum is around $1 a foot, 100 copper is $1 an inch). Some aluminum and brass alloys can have a thermal coefficient of well below 100. 416 SS is like 29 and 4140 is like 34.
The barrel will pick up 3 to 4 degrees every shot, but just by itself it only loses 1 degree every 5 minutes in 80 degree ambient. So you use the cooling rod as a heat sink to suck the heat out of the barrel so it doesn't build up.
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