do silencer for airsoft slows the speed of the bb?
 

I know that silencers for airsoft doesnt do anything in terms of "silence/ing", but still wondering if silencer for airsoft slows the speed of the bb? Because the real silencers slows the speed of a real bullet.

They actually dampen the report of the rifle quite a bit if the inner barrle ends before the silencer.

They do not slow down the FPS of the BB.

+1, sometimes it makes a HUGE difference in noise.
If you're getting a lower reading on your chrono with the silencer on, then take the silencer off, and chrono your gun 6" away from the chrono and check it. Shouldn't reduce your FPS at all.

the silencer i use works really well. my AEG has a really loud muzzle report and the silencer almost completely dampens it. there is no affect to BB velocity.

also, a RS silencer does not affect the velocity of real bullets. it just works better when sub-sonic ammunition is used with the silencer instead of normal full velocity ammo.

Actually I owned a silencer that dropped the fps down by 30. I tested it on multiple guns and it dropped each one. Almost acted like a reducer.

That means that most likely the foam wasn't aligned properly inside and it was friction reducing the BB, not the silencer its self.

Same thing happened with my brother's and we adjust the foam and still the same effect.

hmmmm really weird. How long is the silencer?

I designed a supressor years ago for my KSC M11A1 that actually increased the velocity by 30fps and also made the gun super quiet, you could really only hear the clacking of the bolt. Inner barrel in the supressor helped, as well as only having the last half of it perforated that allowed the gas to expand in the irregular foam baffles I installed. :)

And no, didn't get any 100km kills with it.......

I did noticed on one of my aeg that each time I shoot with the silencer on there is a slight hook at the end of the BB trajectory. When I put the muzzle break on instead, the BB flies perfectly straight...the foam is also correctly alligned...I found that pretty weird, as if the air dispersion at the end of the barrel was better with the muzzle break stabiliizing the BB more than with the silencer...maybe there is more turbulence at the end of the silencer than the muzzle break?

Anybody else noticed that kind of thing?

It's probably hitting the tip of the silencer when it leaves the opening at the end.

Nope it is not, that is why I found that weird...anyway no big deal.

depending on the silencer, the air that the bb pushes is absorbed by the foam and could cause some slowing of the bb

The BB is not being accelerated in the silencer. The only time air pressure has any effect on the BB is when it's in the inner barrel.

Adding a supressor/silencer will not have any effect on an airsoft BB (assuming its straight and there are no obstructions, ie attached properly)

im thinking that maybe the rough surface of the cutouts on the foam disks may cause turbulence around the BB as it passes through the silencer. i wonder if installing a metal or plastic tube full of holes would help to smoothen out the airflow.