Carbon Fiber Wrapped Barrel Heat Test Video

[mauser284]

 

[cmysix]

I will never buy an EBOXY barrel ever.

 

[mauser284]

I am waiting for all the industry experts and custom action makers to start turning down their steel actions and wrapping that removed mass in carbon fiber. No locking the bolt in the barrel either.

Waiting for all those aviation gun barrels, artillary barrels, tank barrels to be made from carbon fiber! If there was any meriet to a carbon fiber wrapped barrel fighter planes would be all over it like stink on poop!

Funny how the ultimate gun barrel is not carbon composite with a non-structural low mass thin rifled steel liner like we see in 22lr. but applied to large centerfires.

Wrapping a barrel in carbon composite is only slightly better than wrapping a thin steel pressure vessel for a deep submersible in carbon fiber in place of more steel! It is the claims though that they make about them that drives me crazy.

It reminds me of the claims made in the American West by traveling snake oil sales men.

Wondering how one would do on an M60 or an MG42 maybe a M2???

Also when the truth comes out there will not be any appolgies and refunds given!

Maybe Proof and others can make some carbon fiber bolt bodies and bolt lugs!

 

[whatsupdoc]

Silly video, CF barrels are typically used in making a lightweight hunting rifles that will be fired once or twice taking big game not in a machine gun barrels. But you never know as technology advances maybe one day.

When was the last hunt that someone had to shoot 10 rounds fast, Maybe in Jurassic park against a pack
of velociraptors.

 

[c3d4b2]

Here is a link to a site with some additional information. Not the most visually appealing, but I found the information interesting.

Carbon Fiber Properties-Heat Conductivity

Carbon Fiber properties are spectacular|Carbon Fibre has exceptional heat conducting characteristics

christinedemerchant.com

 

[Fuj]

Look up the 1000 round test MDT did to a carbon fiber barrel ??
It's shows the main reason it would suck in a military application,
when the SHTF.....

 

[DiffEQ]

From the article which @c3d4b2 posted:

High conductivity graphite is quite fragile and this is a disadvantage.
----
Any carbon fiber in regular epoxy can only be subjected to temperatures that will not damage the epoxy matrix. For this reason regular composites have a limited use. High temperature epoxy has been developed but it is really not very high.
----

So...Is Carbon Fiber a good heat conductor?​

As usual the answer is "it depends." The short answer is NO not when regular carbon fiber is made up in regular epoxy and expected to conduct heat across the thickness.

When I first read the claims by CF barrel manufacturers that the CF was not for stiffness but thermal conductivity, my intuition from years of engineering in thermal process industries hollered "horse puckey". Though the ooh-ah is cool, I've never considered a CF barrel for myself.

 

[Bill K]

To lighten the load a carbon wrapped barrel is probably fine for one to three shots, but then as it heats accuracy and grouping start spreading like hot butter, from what I have read with reports actually done on target/paper, from a bench.
So, for my quanity shooting I will stick to a good old steel barrel, Thank you.

 

[C.E.Smith043]

Silly video, CF barrels are typically used in making a lightweight hunting rifles that will be fired once or twice taking big game not in a machine gun barrels. But you never know as technology advances maybe one day.

When was the last hunt that someone had to shoot 10 rounds fast, Maybe in Jurassic park against a pack
of velociraptors.

Do it on feral pigs all the time

 

[tovaert]

Carbon fiber-wrapped barrels conduct heat well circumferentially (e.g., a filament-wound layup) but what is needed is high radial thermal conductivity, which means that the fibers must be oriented radially in order to pull the heat from the hot barrel and move it quickly to the free surface where it can be convected away. C-C aircraft brakes use a "stitching" process to insert radial fibers into a 2-D carbon fiber mesh, but it is not all that effective. Epoxy is an insulator compared to carbon fiber. Some simulations: https://app.box.com/s/899u8ohropkr287rrlrgrr2wxyite35t. Look at the difference between Figures 8 and 10.

 

[drop_point]

This reminds me of the "fluted" barrel arguments from about a decade back. This video is somewhat silly. First, it is not apples to apples; both barrels have a different diameter and both have different weights.

Secondly, the claims of carbon barrel manufacturers make, and thus the advantage, is comparison to an all-steel barrel of the same weight.

The advantage of a carbon-wrapped barrel is that it is stiffer (especially for suppressor use), than an all-steel barrel of the same weight. Hunting rifles where carbon is being used are not designed to be fired ten rounds and "cool off more quickly". But he does conclude that all carbon barrels are not the same and that may skew results. Nobody buys a carbon barrel with the inclination it is superior for high-volume target shooting.

 

[Alex Wheeler]

I actually tested that. I took a bunch of contours I had in the shop, chucked them up at the same place on the shanks. Then hung a weight at the same place from the chuck and measured the defection of the barrels. My conclusion was carbon wrapped barrels are equal in stiffness to equal weight steel barrels.

 

[drop_point]

I actually tested that. I took a bunch of contours I had in the shop, chucked them up at the same place on the shanks. Then hung a weight at the same place from the chuck and measured the defection of the barrels. My conclusion was carbon wrapped barrels are equal in stiffness to equal weight steel barrels.

Can you get enough shoulder for a 5/8x24 suppressor on a barrel of the same weight? Seems the muzzle is 0.660" or under to match the Sendero contour carbon barrel in weight, which isn't enough surface for most suppressor manufacturers' recommendation. That means going 1/2-28 and an adapter to use a steel hunting barrel suppressed.

 

[Alex Wheeler]

If you make a little threaded ring you screw on to the barrel to act as a shoulder you can. The other option is a custom contour where they flare out the end just so you can have some more meat. Both cheaper options than cf. You also get to run a stock with slimmer forend, so theres more weight savings. But at the end of the day, the cf barrels look great and in a hunting platform dont have any major downsides other than bulk and cost. I chamber a lot of cf barrels. Lots of guys like them.

 

[drop_point]

If you make a little threaded ring you screw on to the barrel to act as a shoulder you can. The other option is a custom contour where they flare out the end just so you can have some more meat. Both cheaper options than cf. You also get to run a stock with slimmer forend, so theres more weight savings. But at the end of the day, the cf barrels look great and in a hunting platform dont have any major downsides other than bulk and cost.

I have a factory Browning with a trumpet at the muzzle for suppressor use. That seems to work well.

 

[J_idaho]

They are meant to look freaking cool.

 

[RustyInBend]

Summary ... CF is lighter and cooler on the exterior but exposes the barrel interior to more heat ... Steel is heavier and hotter on the exterior but exposes the barrel interior to improved thermals. Got it ... great video ... buy CF for your hunting rifles, and steel for your machine guns.

 

[drop_point]

Here was another test:

Proof Carbon Fiber Barrels Review

BigJimFish reviews carbon fiber barrels from Proof Research discussing their cooling, harmonics, aesthetics, and performance

www.snipershide.com