06-24-2018, 01:52 AM
(This post was last modified: 06-24-2018, 01:57 AM by The Profit Joseph Sith.)
Heres the method ive been waiting to see for years. Use your hand gaurd to tension the barrel and tie it all together. Get the air in between the barrel and HG. Glad someone finally made it and boy oh boy these things really are masterpeices. Now the only thing left to do is put a fan blowing air down the inside actively cooling the barrel. If the combined that with something like the JP Enterprises thermal heatsink thing it might be pretty "cool"
https://www.masterofarms.com/index.php?m...ucts_id=65
They use 7095 Tennalum for their receivers.
On the other end of the spectrum but equally as posh is the Turnbull steel receiver's. (Diabolically sexy!) I mention this because its basically the same (steel) material for all the interfacing parts. Looks like they discontinued the ar15 pattern.
https://www.turnbullrestoration.com/turn...-10-rifle/
And then theres these guys who ive been waiting for around 5 years or more to release to public, which i know doesn't help your query but theres no doubt that when a rifle is made entirely out of the same material the thermal expansion dilemma is negated.
http://amalgamatedti.com/phone/index.html
If i remember correctly the last time i asked my dad about this (hes a QA/engineering guy at boeing) the thermal expansion of most materials is basically negligible your talking like .0001" for most common alloys around a few inches in size. The bigger it is the more this matters. The main issue is the thermal dissipation. Ive always been skeptical of those CF sleeved barrels. I want to see someone put a thermistor or other sensor under the CF before wrapped and one on the outside to see what the variances are.
Also keep in mind virtually all AR's out there have a steel or SS barrel in an alum. receiver so a alum barrel nut wouldnt be any worse. And if what your saying is true. The nut will expand and get tighter as it heats up. I highly doubt thermal cycling will loosen it up if torqued correctly.
Good luck though.
https://www.masterofarms.com/index.php?m...ucts_id=65
They use 7095 Tennalum for their receivers.
On the other end of the spectrum but equally as posh is the Turnbull steel receiver's. (Diabolically sexy!) I mention this because its basically the same (steel) material for all the interfacing parts. Looks like they discontinued the ar15 pattern.
https://www.turnbullrestoration.com/turn...-10-rifle/
And then theres these guys who ive been waiting for around 5 years or more to release to public, which i know doesn't help your query but theres no doubt that when a rifle is made entirely out of the same material the thermal expansion dilemma is negated.
http://amalgamatedti.com/phone/index.html
If i remember correctly the last time i asked my dad about this (hes a QA/engineering guy at boeing) the thermal expansion of most materials is basically negligible your talking like .0001" for most common alloys around a few inches in size. The bigger it is the more this matters. The main issue is the thermal dissipation. Ive always been skeptical of those CF sleeved barrels. I want to see someone put a thermistor or other sensor under the CF before wrapped and one on the outside to see what the variances are.
Also keep in mind virtually all AR's out there have a steel or SS barrel in an alum. receiver so a alum barrel nut wouldnt be any worse. And if what your saying is true. The nut will expand and get tighter as it heats up. I highly doubt thermal cycling will loosen it up if torqued correctly.
Good luck though.