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之前总是不理解各种can，各种mount啥的区别，到处找，看了很多视频也是云里雾里的。一般测试最多也就是拿个分贝仪对比一下，而且用的相机基本都有高音cut，所以无法比较。
正好看到有人在问DA家的Sandman和Nomad的区别，然后就看到下面DA工程师的回答了，很多不懂得问题一下茅塞顿开。
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Sorry I missed this. I guess I need to turn on notifications or something. I've had my head down working on our new taper mount, and times are just crazy busy in general.
Here's my take on it all from the designer and how we positioned the Nomad and Sandman in the lineup:
For full auto, continuous, heavy shooting, there's just nothing that beats the Sandman. The KeyMount mounting system is welded into it and it doesn't come loose on the muzzle device when shooting. The stellite baffles handle erosion better than any other material out there. It also comes off when you want. It's known for very low backpressure and is very "friendly" for DI guns in that it allows for easy set up to get them hearing safe at the ejection port (i.e. changing out buffer weight, gas block adjustment, A5 buffer system, etc.). Many suppressors will require all of the above mods, where the Sandman-S or especially the -K may just require one of the above. That all depends on many factors, hence the term that it's "friendly" for hearing safe setup. The rifle is usually dialed in pretty quickly.
The Nomad will still take full auto fire and even sustained hard use. Heat is only the enemy in terms of baffle erosion. The 17-4 stainless is crazy strong, but will begin to wear before stellite will at those high temps. Note that it takes sustained high temps and firing schedules to see this, though. If you get a suppressor glowing red hot every time you're out shooting, then the Sandman is for you. I've ran many Nomads in full auto tests I can tell you that a few mag dump sessions of 4-6 straight mags of full auto use will begin to impinge the face of the blast baffle and you'll see roughness along the bore-line--but no increase in diameter of the bore due to wear. Otherwise, the Nomad will offer you more options. If you have a favorite mount on all of your rifles, then it let's you still run with that if the manufacturer provides an adapter for it.
It's also quieter than the Sandman-S and is lighter. It has a super efficient baffle stack that is not a standard cone design. It redirects gas into secondary chambers and it also allows that gas to return back across the bore-line to impede reverse flow back down the bore. The net effect is backpressure that is on par with the Sandman-S (which is awesome as mentioned above), while still being efficient at the muzzle. Many suppressors that are super efficient at the muzzle will massively drive up backpressure (i.e. the Omega 300). You'll also find that the Nomad works incredibly well on subsonic ammo and shines even more as the pressure goes up with supersonic cartridges.
The Nomad's baffle structure is like a lattice bridge where it directs the forces to reinforced points. The welded joints you see between the baffle sections are super thick and that's where all the hoop stress is diverted. That's why it has a higher caliber rating than the Sandman series (300 Norma Mag).
I hope that helps answer some questions!
Todd Magee
Dead Air Engineering
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发表于 2021-5-8 15:24
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