What is an air stripper

What is an air stripper

Postby pjgtech » Thu May 11, 2017 4:34 pm

Seen these things that look like silencers / moderators with various side cut outs, what are they and what do they do?

Thanx
pjgtech (Peter) - BASC Member
Air Arms S410 PCP: TDR .177 - Hawke Vantage 3-9x50AO
Weihrauch HW 97KT Underlever: (SFS Tuned) .22 - Hawke Vantage 3-9x50AO
Gamo Whisper IGT Gas Ram .177 - Gamo 3-9x40
User avatar
pjgtech
 
Posts: 43
Joined: Sun May 07, 2017 5:06 pm
Location: London

Re: What is an air stripper

Postby Blackbaronfish » Thu May 11, 2017 5:37 pm

They reduce the muzzle blast behind the pellet. The reduced air is said to prevent turbulence destabilising the pellet.

BBF
Did I mention that I'm the only one to have attended every annual meet since we started
User avatar
Blackbaronfish
Super Admin
 
Posts: 2673
Joined: Sun Feb 15, 2015 6:20 pm
Location: Nuneaton

Re: What is an air stripper

Postby pjgtech » Thu May 11, 2017 5:48 pm

Does that also mean the pellet has less power or travels at slower speed?

Thanx
pjgtech (Peter) - BASC Member
Air Arms S410 PCP: TDR .177 - Hawke Vantage 3-9x50AO
Weihrauch HW 97KT Underlever: (SFS Tuned) .22 - Hawke Vantage 3-9x50AO
Gamo Whisper IGT Gas Ram .177 - Gamo 3-9x40
User avatar
pjgtech
 
Posts: 43
Joined: Sun May 07, 2017 5:06 pm
Location: London

Re: What is an air stripper

Postby eboswan » Thu May 11, 2017 5:53 pm

No, the pellet has already left the barrel it just stabilises the air behind the pellet.
IS MY SIGNATURE BIGGER THAN RAYS. Cz 452 american .22+sak mod
S200. .177
eboswan
Site Admin
 
Posts: 2266
Joined: Sun Feb 15, 2015 9:16 am
Location: swansea

Re: What is an air stripper

Postby gary martin » Thu May 11, 2017 6:21 pm

IMHO a device to extract a little more hard earned cash from you.
gary martin
 
Posts: 632
Joined: Thu Feb 19, 2015 8:21 pm
Location: worcestershire

Re: What is an air stripper

Postby gary martin » Thu May 11, 2017 6:36 pm

An Air Stripper has one or two cones which of course have a hole through them to allow the pellet to exit. the air behind is channelled over the cone and expelled through the ports on the sides of the device. On a sub 12FPE rifle I very much doubt they would have a serious effect. on some the cones are movable to tune the effect, wether it does effect the round by stripping the air is debateable , or is just moving mass forwards/backward which will have an effect on the barrel harmonics of a floating barrel. on a higher powered rifle the stripper could help with muzzle flip. My Ev2 has the std AA stripper on it, I would not be temped to buy an aftermarket item, the money saved could be spent on pellets and practice, which does have an effect.
gary martin
 
Posts: 632
Joined: Thu Feb 19, 2015 8:21 pm
Location: worcestershire

Re: What is an air stripper

Postby Raj » Thu May 11, 2017 7:31 pm

I have 2 x S200s. One with an air stripper and one without.

I set them both to the same power without anything on the muzzle and then put the air stripper on one of them. The power remained the same but the POI was elevated.

I then put an AA sound moderator on the other one. The POI dropped. Make of this what you will. I am not sure myself but the rifle with the stripper feels sharper to shoot with tighter grouping.

PS - The stripper is one of the best that was available - hand-crafted by UK Neil.
“It's the Indian, not the arrow"
User avatar
Raj
Moderator
 
Posts: 1794
Joined: Sun Feb 15, 2015 9:36 pm
Location: Rugby

Re: What is an air stripper

Postby gary martin » Thu May 11, 2017 9:23 pm

interesting post Raj. I would be interested to see the results of the one with the air stripper. I do admit to being sceptical and of the opinion that if you have just forked out X amount of money, that you will believe/placebo effect call it what you will, that this has actually made a difference. we are aware of the theory surrounding them so a test which would lay this to rest so to speak is weighed pellets, benchrest, indoors same fill pressure if rifle unregulated. Test one as it is set up, now the same rifle with the ports taped up to stop the stripping effect, of course not too much weight as this will effect. the POI is not relevant, but the groupsize is.
Gary.
gary martin
 
Posts: 632
Joined: Thu Feb 19, 2015 8:21 pm
Location: worcestershire

Re: What is an air stripper

Postby Raj » Thu May 11, 2017 11:52 pm

I would love to do the test myself. Will need an indoor facility that I will try and find.
“It's the Indian, not the arrow"
User avatar
Raj
Moderator
 
Posts: 1794
Joined: Sun Feb 15, 2015 9:36 pm
Location: Rugby

Re: What is an air stripper

Postby Blackbaronfish » Fri May 12, 2017 5:15 am

You will also get different results depending on the rifle used. A spring would have more effect than a pop. Also lock time won't help
Did I mention that I'm the only one to have attended every annual meet since we started
User avatar
Blackbaronfish
Super Admin
 
Posts: 2673
Joined: Sun Feb 15, 2015 6:20 pm
Location: Nuneaton

Next

Return to TECHNICAL

Who is online

Users browsing this forum: Google [Bot] and 1 guest