Careless Posted December 11, 2016 Share Posted December 11, 2016 Hi guys , iv never come across anyone with a hpa engined gun so i have no idea what they sound like in real life but from what iv seen on the web it seems like theres potential for a real stealth/suppressed gun especially with no blow back, is this the case? cheers Link to comment Share on other sites More sharing options...
Sacarathe Posted December 11, 2016 Share Posted December 11, 2016 Hi guys , iv never come across anyone with a hpa engined gun so i have no idea what they sound like in real life but from what iv seen on the web it seems like theres potential for a real stealth/suppressed gun especially with no blow back, is this the case? cheers Yes, apparently the polarstar fusion engine in closed bolt mode doesn't expel any noise at the muzzle... Link to comment Share on other sites More sharing options...
Careless Posted December 11, 2016 Author Share Posted December 11, 2016 thats obscene! going to look further into this then, after buying a tm mk23, i want my primary to be as silent or close to as possible ... cheers Link to comment Share on other sites More sharing options...
Root Admin proffrink Posted December 11, 2016 Root Admin Share Posted December 11, 2016 Yep, suppressors do make a difference on certain kits like Sacarathe says. Depends on your bucking and hop unit a lot though as even the smallest amount of escaping air can make a fairly loud noise. Link to comment Share on other sites More sharing options...
Sacarathe Posted December 11, 2016 Share Posted December 11, 2016 thats obscene! going to look further into this then, after buying a tm mk23, i want my primary to be as silent or close to as possible ... cheers That's not suggesting it's silent mind you. Just the audible noise carried down the barrel. Link to comment Share on other sites More sharing options...
Supporters Shizbazki Posted December 12, 2016 Supporters Share Posted December 12, 2016 How quiet a gun is can be quite subjective, but since i'm testing my Polarstar M4 i thought i would give you an insight. So you get an idea:- The gun: G&P M4 Carbine http://i.imgur.com/ajd2bNH.jpg Uses a Polarstar Fusion Engine for Ver 2 Gearboxes, its the Gen 3 one, i have installed a Lightning Banjo, Red Low Flow Poppet, Red Nozzle and PIGL (Line). Regulator is a Redline SFR setup to output at 68PSI hooked up to a 68/4500PSI Carbon fibre tank. The hop up chamber is the G&P stock chamber, using a G&G green hop up rubber and bucking and a 6.06mm wide, 300mm Miracle inner Barrel. Stats wise using ASG Blaster .20g BBs firing at a low average of 334FPS, a high average of 340FPS and median average of 336FPS. No suppressor attached and using a Samsung Galaxy S6 and an app called Smart Tools, it registered an average of about 72dB both loaded and unloaded. Link to comment Share on other sites More sharing options...
GiantKiwi Posted December 12, 2016 Share Posted December 12, 2016 No suppressor attached and using a Samsung Galaxy S6 and an app called Smart Tools, it registered an average of about 72dB both loaded and unloaded. I'd take that reading with a pinch of salt, it won't even be within a country mile of being accurate. 75dB is about the level of noise made when a toilet flushes. Link to comment Share on other sites More sharing options...
Sacarathe Posted December 12, 2016 Share Posted December 12, 2016 How quiet a gun is can be quite subjective, but since i'm testing my Polarstar M4 i thought i would give you an insight. it registered an average of about 72dB both loaded and unloaded. And where was the reading taken from? The muzzle, the receiver, or at least 50cm away? Link to comment Share on other sites More sharing options...
Supporters Shizbazki Posted December 12, 2016 Supporters Share Posted December 12, 2016 I'd take that reading with a pinch of salt, it won't even be within a country mile of being accurate. 75dB is about the level of noise made when a toilet flushes. I didn't state that it was supposed to be accurate, just so he could have an idea, bare in mind i did this on a whim as i was already in the process of testing my gun (new hop up and all) so didn't have to do it for him but did. My phone only registered 80dB right next to my blank firing 8mm Glock 17 pistol and i can tell you compared to the polarstar, your ears ring when that shoots. In my view my Polarstar M4 when shooting, the sound level is about the same as a large claw hammer hitting a block of soft pine timber but again that's subjective. My phone was sat about 15cm away from my Chronograph which is mounted in an ammo box. Again this wasn't a scientific test, just to get an idea. Link to comment Share on other sites More sharing options...
Sacarathe Posted December 12, 2016 Share Posted December 12, 2016 I didn't state that it was supposed to be accurate, just so he could have an idea, bare in mind i did this on a whim as i was already in the process of testing my gun (new hop up and all) so didn't have to do it for him but did. My phone only registered 80dB right next to my blank firing 8mm Glock 17 pistol and i can tell you compared to the polarstar, your ears ring when that shoots. In my view my Polarstar M4 when shooting, the sound level is about the same as a large claw hammer hitting a block of soft pine timber but again that's subjective. My phone was sat about 15cm away from my Chronograph which is mounted in an ammo box. Again this wasn't a scientific test, just to get an idea. You can soften the moving parts in the P*FE iirc as with an AEG. Link to comment Share on other sites More sharing options...
Careless Posted December 12, 2016 Author Share Posted December 12, 2016 isnt majority of the noise the air pop as it leaves the barrel though? a foam filled suppressor should take care of that .i know the Fusion engine needs to reload the BB's but surely that cant be that noisy? cheers ... Link to comment Share on other sites More sharing options...
Sacarathe Posted December 13, 2016 Share Posted December 13, 2016 isnt majority of the noise the air pop as it leaves the barrel though? a foam filled suppressor should take care of that .i know the Fusion engine needs to reload the BB's but surely that cant be that noisy? cheers ... This is why I said put the FEV in closed bolt, so that it chambers a new round after firing. Reducing overall noise from the nozzle when firing, it will still make the noise, just after the BB has left the barrel. Can't speak for the other two moving parts though. Link to comment Share on other sites More sharing options...
Supporters Rock-climby-Dave Posted December 13, 2016 Supporters Share Posted December 13, 2016 put it in closed bolt, adjust the timing and air flow so that there is no 'spare air' coming out after the necessary amount for BB propulsion and then add a decent foam suppressor. Mine used to be quieter (user end) than the TM MK23. apparently the receiving end was -essentially- when on a site with more than 10 players running about, leaves rustling and distant pyro going off, silent. and even if it ISN'T that quiet, most people don't recognise the sound as an airsoft model being shot at them Link to comment Share on other sites More sharing options...
Careless Posted December 14, 2016 Author Share Posted December 14, 2016 thanks for the comments guys, i was considering making a DMR out of the mk23 but i think HPA long term would be the way to go, just need to find an excuse to splash the cash Mine used to be quieter (user end) than the TM MK23. apparently the receiving end was -essentially- when on a site with more than 10 players running about, leaves rustling and distant pyro going off, silent. and even if it ISN'T that quiet, most people don't recognise the sound as an airsoft model being shot at them which engine have you got ? thanks... Link to comment Share on other sites More sharing options...
Supporters Rock-climby-Dave Posted December 15, 2016 Supporters Share Posted December 15, 2016 it was a first generation V2 gearbox type a few years back now. all sold now, but it worked well enough. I'd imagine the newer models have even more tunability for better suppression Link to comment Share on other sites More sharing options...
ikarma70 Posted December 16, 2016 Share Posted December 16, 2016 I have just invested in a wolverine inferno gen 1 v3, wolverine storm, amped custom airline and 2 48ci tanks and the gun is a Cyma RPK. As for the noise it's more like a co2 air pistol. Link to comment Share on other sites More sharing options...
Careless Posted December 19, 2016 Author Share Posted December 19, 2016 I have just invested in a wolverine inferno gen 1 v3, wolverine storm, amped custom airline and 2 48ci tanks and the gun is a Cyma RPK. As for the noise it's more like a co2 air pistol. cheers, have you tried it with a foam filled suppressor? Link to comment Share on other sites More sharing options...
ikarma70 Posted December 20, 2016 Share Posted December 20, 2016 Not yet but that is on my to do list this week, I would say that I don't think that I will ever use an AEG as my primary again. I will keep you informed when I do it. Link to comment Share on other sites More sharing options...
ikarma70 Posted December 21, 2016 Share Posted December 21, 2016 cheers, have you tried it with a foam filled suppressor? Ok I tried the rpk with a 320mm silencer and it really does work in killing the muzzle crack so yes it's very effective but looks ridiculous on my rpk!!! Link to comment Share on other sites More sharing options...
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