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Posted: 5/9/2024 5:31:39 PM EDT
[#1]
Quote HistoryOriginally Posted By HighpowerRifleBrony: Part of the reason the charging handle was moved from the top was heat, correct? Sure was. Seems counter-intuitive with the topic at-hand. |
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Posted: 5/9/2024 8:57:52 PM EDT
[#2]
Quote HistoryOriginally Posted By lew: Sure was. Seems counter-intuitive with the topic at-hand. Quote HistoryOriginally Posted By lew: Originally Posted By HighpowerRifleBrony: Part of the reason the charging handle was moved from the top was heat, correct? Sure was. Seems counter-intuitive with the topic at-hand. That’s why I built it as a piston upper, to hopefully solve that heat issue. Would like to fit a JP heatsink on the barrel but I just don’t think it would fit under that hand guard and with the space needed for the piston. |
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Posted: 5/15/2024 11:22:30 PM EDT
[#3]
Ost
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Posted: 5/16/2024 8:17:01 PM EDT
[#4]
Quote HistoryOriginally Posted By IslandTimes: That’s why I built it as a piston upper, to hopefully solve that heat issue. Would like to fit a JP heatsink on the barrel but I just don’t think it would fit under that hand guard and with the space needed for the piston. Quote HistoryOriginally Posted By IslandTimes: Originally Posted By lew: Originally Posted By HighpowerRifleBrony: Part of the reason the charging handle was moved from the top was heat, correct? Sure was. Seems counter-intuitive with the topic at-hand. That’s why I built it as a piston upper, to hopefully solve that heat issue. Would like to fit a JP heatsink on the barrel but I just don’t think it would fit under that hand guard and with the space needed for the piston. Well, in that case: RIGHTEOUS.  Could the fins on the heat sink be trimmed down? |
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Posted: 5/16/2024 8:41:16 PM EDT
[#5]
Quote HistoryOriginally Posted By lew: Well, in that case: RIGHTEOUS. Could the fins on the heat sink be trimmed down? Green Mountain makes some finned barrels, kinda odd looking and I have no idea how well they'd work but it might be worth a shot if you've got a FRT/binary or other happy device. http://www.gmriflebarrel.com/military-barrels/ar-15-/-m16-/-m4-rifle-barrels |
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Posted: 5/16/2024 8:56:13 PM EDT
[#6]
Quote HistoryOriginally Posted By sandboxmedic: Green Mountain makes some finned barrels, kinda odd looking and I have no idea how well they'd work but it might be worth a shot if you've got a FRT/binary or other happy device. http://www.gmriflebarrel.com/military-barrels/ar-15-/-m16-/-m4-rifle-barrels Quote HistoryOriginally Posted By sandboxmedic: Originally Posted By lew: Well, in that case: RIGHTEOUS. Could the fins on the heat sink be trimmed down? Green Mountain makes some finned barrels, kinda odd looking and I have no idea how well they'd work but it might be worth a shot if you've got a FRT/binary or other happy device. http://www.gmriflebarrel.com/military-barrels/ar-15-/-m16-/-m4-rifle-barrels To bad they're nitrided. Not great for this role |
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Posted: 5/17/2024 2:05:15 PM EDT
[#7]
Quote HistoryOriginally Posted By 03RN: To bad they're nitrided. Not great for this role Not ideal, but, for that price, get two. Barrels are consumables. |
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NC, USA
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Posted: 5/22/2024 1:39:32 PM EDT
[Last Edit: 9D1Alpha]
[#8]
I was trying to find some quantifiable benefit on finned bbls and ran across this ; https://www.aimt.cz/index.php/aimt/article/view/1254/285
Would be neat to have TEG unit and fan that draws air through the rear of the handguard and blows it out the front in conjuction with the finned bbl . |
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Posted: 5/22/2024 2:15:32 PM EDT
[#9]
I'd love to get a hold of one of the FN double chromed barrels like Noveske sells and have it cut to 18" with rifle length gas, SDM profile and fluting behind a pinned mk12 gas block...
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Posted: 5/22/2024 2:42:25 PM EDT
[#10]
Quote HistoryOriginally Posted By 9D1Alpha: I was trying to find some quantifiable benefit on finned bbls and ran across this ; https://www.aimt.cz/index.php/aimt/article/view/1254/285 Would be neat to have TEG unit and fan that draws air through the rear of the handguard and blows it out the front in conjuction with the finned bbl . You know it's only going to be a matter of time before some nerd hooks up a GPU cooler.  Yeah, I know it defeats the purpose of a the RPK concept, but you know it's going to happen. 
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NC, USA
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Posted: 5/22/2024 2:59:08 PM EDT
[#11]
Quote HistoryOriginally Posted By sandboxmedic: You know it's only going to be a matter of time before some nerd hooks up a GPU cooler. Yeah, I know it defeats the purpose of a the RPK concept, but you know it's going to happen. Hey, bbls get hot ! 
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GA, USA
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Posted: 5/22/2024 3:03:43 PM EDT
[#12]
Really hot!
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NV, USA
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Posted: 5/22/2024 8:12:48 PM EDT
[#13]
Quote HistoryOriginally Posted By 9D1Alpha: I was trying to find some quantifiable benefit on finned bbls and ran across this ; https://www.aimt.cz/index.php/aimt/article/view/1254/285 Would be neat to have TEG unit and fan that draws air through the rear of the handguard and blows it out the front in conjuction with the finned bbl . It's funny, I was just looking at battery powered clip on fans the other day to see if something like that was viable. Of course, fans are no match for water cooled:  https://www.ar15.com/forums/ar-15/My_Water_Cooled_Upper_Project/4-384217/ 
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Posted: 5/22/2024 8:46:49 PM EDT
[#14]
Quote HistoryOriginally Posted By spydercomonkey: It's funny, I was just looking at battery powered clip on fans the other day to see if something like that was viable. Of course, fans are no match for water cooled: https://www.ar15.com/forums/ar-15/My_Water_Cooled_Upper_Project/4-384217/ http://i301.photobucket.com/albums/nn45/canon3825/100_0283.jpg Quote HistoryOriginally Posted By spydercomonkey: Originally Posted By 9D1Alpha: I was trying to find some quantifiable benefit on finned bbls and ran across this ; https://www.aimt.cz/index.php/aimt/article/view/1254/285 Would be neat to have TEG unit and fan that draws air through the rear of the handguard and blows it out the front in conjuction with the finned bbl . It's funny, I was just looking at battery powered clip on fans the other day to see if something like that was viable. Of course, fans are no match for water cooled: https://www.ar15.com/forums/ar-15/My_Water_Cooled_Upper_Project/4-384217/ http://i301.photobucket.com/albums/nn45/canon3825/100_0283.jpg That thing is AWESOME! I got made fun of on reddit about water cooling a suppressor.
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NC, USA
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Posted: 5/22/2024 11:27:21 PM EDT
[#15]
Quote HistoryOriginally Posted By spydercomonkey: It's funny, I was just looking at battery powered clip on fans the other day to see if something like that was viable. Of course, fans are no match for water cooled: https://www.ar15.com/forums/ar-15/My_Water_Cooled_Upper_Project/4-384217/ http://i301.photobucket.com/albums/nn45/canon3825/100_0283.jpg Quote HistoryOriginally Posted By spydercomonkey: Originally Posted By 9D1Alpha: I was trying to find some quantifiable benefit on finned bbls and ran across this ; https://www.aimt.cz/index.php/aimt/article/view/1254/285 Would be neat to have TEG unit and fan that draws air through the rear of the handguard and blows it out the front in conjuction with the finned bbl . It's funny, I was just looking at battery powered clip on fans the other day to see if something like that was viable. Of course, fans are no match for water cooled: https://www.ar15.com/forums/ar-15/My_Water_Cooled_Upper_Project/4-384217/ http://i301.photobucket.com/albums/nn45/canon3825/100_0283.jpg Seeing that beta c-mag makes wonder how two gilboa snakes back-to-back would be ....and how nice water cooling would be .... |
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Posted: 5/22/2024 11:34:48 PM EDT
[#16]
Quote HistoryOriginally Posted By walldj45: I got made fun of on reddit about water cooling a suppressor. It's Reddit, not the real world; yer good.
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TX, USA
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Posted: 5/23/2024 7:03:11 AM EDT
[#17]
Quote HistoryOriginally Posted By walldj45: That thing is AWESOME! I got made fun of on reddit about water cooling a suppressor. Dude Reddit is the place that thinks Carl from in range is a hero and the place that probably convinced tacticool girlfriend to be a tranny |
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Posted: 5/25/2024 1:40:49 AM EDT
[#18]
Quote HistoryOriginally Posted By jhon: This concept intrigues me enough I might build an upper for it. I’m thinking a 20” HBAR paired with a TA11 or TA110 would be fantastic. At this time it looks like Spikes and Criterion are the only options for a chrome lined HBAR? FN makes a CHF chrome lined hbar, as does Daniel defense. |
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NM, USA
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Posted: 5/26/2024 2:23:06 PM EDT
[Last Edit: badkarmaiii]
[#19]
Anyone else think an MGI Hydra upper would be interesting on one of these?
Could swap out a hot barrel pretty quickly. I've also wanted to experiment with a barrel wrapped in plumber's felt, soaked with water for evaporative cooling. It would also give you a way to grab a hot barrel safely if also applied to the exposed portion. |
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PA, USA
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Posted: 5/27/2024 11:14:29 PM EDT
[#20]
thats the barrel i ended up going with too, but i dont have faith in their chrome lining process, i heard green mountain is highly regarded for durability.
if i could do it all over id get one of their 20 inchers with a JP heat sink 3 times as much but i believe it might be worth it |
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