Jimmy Rigged AR15 Barrel Heat Sink

[CamoDeafie]

You know.. how hot does an AR barrel get when doing mag dumps? Hot enough to melt steel gas tubes.

 

[lucusloc]

Don't over-engineer it if you don't have to.

 

[Wombat of Doom]

Hmm that water cooled setup could work for the lage upper. Not an ar, but full auto and uses ar barrels

 

[CamoDeafie]

COLT LIGHT MACHINE GUN - Small Arms Review

By Christopher R. Bartocci

smallarmsreview.com

Seems the Colt LMG version of the M16 used what would become the Bull Barrel (0.936" OD), and no heat sinks

 

[Certaindeaf]

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Don't over-engineer it if you don't have to.

Or try decaf for that fast twitch fingy.

 

[Asavage270]

Just an odd thought, but instead of squaring the barrel, just go with a straight profile. You could then spec the sink clamping surface to match the barrel diameter.

Also....wonder if it would benefit from using an interface like Cryo Paste or other thermal paste/grease (used for heat transfer from a computer CPU's lid to its heatsink). The tolerances between the sink and the barrel would have to be fairly tight.

Yeah I agree squaring a barrel is a lot of machine shop cost and a little sketchy.

 

[Cellar]

Round Heatsink for LED - Diameter ⌀45mm / ⌀1.77"

SKU 2004ASL Type Round LED Heatsink Material Aluminum 6063-T5 Surface Non-Anodized (Mill Finish) Diameter (Width) ⌀45mm / ⌀1.77'' All of our Heatsink Extrusions are stocked as full length (78'' to 118'' depending on the extrusion). We cut to your specified piece length (inch/mm) per order. We...

heatsinkonline.com

^ solid heat sink (would need to be lathed out to fit 1" barrel profile, along with some sort of clamping design)

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instead of clamping these, could they possibly be bored out for a slightly slimmer barrel profile, then mill a flat path lengthwise with tapped holes, and then you could dimple the barrel in evenly spaced portions, and use set screws? They could be removed completely for maintenance. Think shooting in the rain, water might seep under the heatsinks. if you can remove them to oil the barrel, that would be ideal. If they don't do what you want, you can remove them, and you still have a functional barrel.

Thoughts?

 

[Nosferatu]

When did Jerry retire and pass on his rigging techniques to Jimmy?

 

[Flopsweat]

When did Jerry retire and pass on his rigging techniques to Jimmy?

That's still Jerry. He's just pan-sexual now. Don't pay any attention, he'll just go on and on about it like a vegan.