fixed shroud for FX Impact

Forums PCP Airguns fixed shroud for FX Impact

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    gan1hck
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    gan1hck
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    Member

    I got this from Liam at Air-Fective….very nice mod for my Impact

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    NeilClague
    Spectator
    Spectator

    Kris that is very judgmental, how do you know there is very little functional value added, have you seen any test results for it or heard it? Statements like that should have something to back them up, and if the owner prefers it to the factory shroud then why should you have a problem with it? And some DIY skills, man you need to start making these yourself if they are that easy! I do not understand why some air gunners are so negative, comments like this is going to have a negative effect on members making posts, if the owner is happy then that is all that really matters, Neil.

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    sharroff
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    gan1hck,

    That’s a nice .looking piece.  I assume the LDC is baffled.  Can you tell if it also uses the shroud for moderation?  (Are there any vent holes on that piece that we can’t see?)

     

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    sharroff
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    Kris,
    Do you own an Impact and have you taken the factory shroud apart to see what it is?  Two pieces of metal that slide back and forth over each other with a few o rings to create an open chamber at the end of the barrel.  Sound wise OK on the 25 (I preferred the Huggett) but at the upper power levels on the 30, it really didn’t do enough to muffle the crack.

    There is lots of room for aftermarket improvement, especially if makers come out with effective full shroud designs.  I would encourage this work, not discourage it.

     

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    gan1hck
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    “sharroff”gan1hck,

    That’s a nice .looking piece.  I assume the LDC is baffled.  Can you tell if it also uses the shroud for moderation?  (Are there any vent holes on that piece that we can’t see?)

     

    
Thanks!

    The can/suppressor is half baffled and half sound absorbing material behind wire mesh…very neat design.  

    There are air vents after the barrel ends and before the suppressor starts that vents air into the shroud around the barrel.  

     

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    sharroff
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    So full shroud LDC!  Very nice!!

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    gan1hck
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    Took me forever to figure how to install it 😉

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    zebra
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    That looks nice! As a general rule, non-organic stuff is typically better when made out of carbon fiber. 

    I haven’t heard of Air fective before. Are they new?

     

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    gan1hck
    Participant
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    “zebra”That looks nice! As a general rule, non-organic stuff is typically better when made out of carbon fiber. 

    I haven’t heard of Air fective before. Are they new?

     

    
Air-fective is in England….I’m in Alabama.

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    Vudongthoai
    Participant
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    Could I ask what caliber is that, please?
    I’m wondering that will quiet down the .30cal more than the factory shroud or not?
    Thanks
    Vu

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    Jasonintn
    Participant
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    Very nice I have one a little different on the way. will post up some pics of it once I get it on the gun and have a chance to test it out. 

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    gan1hck
    Participant
    Member

    25 caliber

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    riazp
    Participant
    Member

    As an avid RC Heli builder I can say that the carbon that Liam uses is not the cheap China stuff, it is much stiffer, and upon inspection one can see the seam bond quite clearly, compared to RC booms the airfective Carbon is in a different class.

    I have an early model of this system, it is based on the stock Bobcat system but improved slightly. The shroud is held concentric to the barrel by a Delrin air stripper that threads onto the barrel, this stripper looks like a mussle break and seats in the carbon tube by oring fit.

    this directs initial air blast rearwards to a ported chamber, fore of the stripper are baffled sections, stacking order on initial builds were 5 equal sized chambers. New units apparently are three different sized chambers.

    the LDC part is also baffled, in my case 4 sections. I rearranged the sizing and stack order based on conversations with Verve, and advice from NC.

    i have been conversing with AGN member Verve, and the consensus is that three chambers are optimal, of different sizes, in biggest, smallest and medium order. Liam is aware of this, hence my assumption that new units will be configured as such.

    Kudos to NC for acknowledging the work that goes into these devices, and a big thank you to him for being so open about all his testing. 

    Also, many thanks to Verve, for corroborating my personal tests, and to Liam for the willingness to collaborate with potential buyers, he really is very eager to make customers happy!

    anytime competitors commend each other’s work is a good day in any endeavour, as it is only once you have tried failed and then succeeded that you are fit to criticise.

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    Verve
    Participant
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    Good to see ‘my’ (borrowed from Wildcat) design on Impacts :)

    Tbh, coming up with design is one thing, creating it is another. Skill required for this type of work, to get everything spot on with small tolerances to work with is far from a basic DiY! More so when you don’t have the rifle in hand!! Credit to Liam for a fine execution of the design.

    And ‘tenner’ for this quality CF, especially 40mm OD pipe ..? Even Chinese don’t sell Grade A products for such low prices.

    Liam and I have discussed another type of moderator using a different material and a different baffle design for .25. Hopefully will have a working prototype soon.

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    tinsoldier
    Participant
    Member

    So by adding on all these different LDCs. How are they affecting the harmonic balances of the barrel?

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    gan1hck
    Participant
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    “tinsoldier”So by adding on all these different LDCs. How are they affecting the harmonic balances of the barrel?

    
Is that an issue in airguns?
     

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    tinsoldier
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    “gan1hck”

    “tinsoldier”So by adding on all these different LDCs. How are they affecting the harmonic balances of the barrel?

    
Is that an issue in airguns?
     

    
Of course there is. I think the main question should be how much does it affect the accuracy and at what distant. I know when I was contemplating of changing the shroud and LDC on my .357 slayer. Tom the owner and builder of American Air Arms told me to be careful with what I change. 

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    NeilClague
    Spectator
    Spectator

    “Verve”Good to see ‘my’ (borrowed from Wildcat) design on Impacts :)

    Tbh, coming up with design is one thing, creating it is another. Skill required for this type of work, to get everything spot on with small tolerances to work with is far from a basic DiY! More so when you don’t have the rifle in hand!! Credit to Liam for a fine execution of the design.

    And ‘tenner’ for this quality CF, especially 40mm OD pipe ..? Even Chinese don’t sell Grade A products for such low prices.

    Liam and I have discussed another type of moderator using a different material and a different baffle design for .25. Hopefully will have a working prototype soon.

    Not sure what you meant by your borrowed from Wildcat design, I have been making that kind of shroud for years, before Wildcats were even for sale!  I was making that design long before the Crickets came out and I am pretty sure someone must have used it before I started to make them. I think they have only started to show up because they are more freely accepted on air guns now. When I first started to make these they were very taboo and you could not even mention them on forums, thank god the forums have started to be a bit more open minded now and allow us to at least have some chat about them and how they work on our guns. Verve is well aware of how much design and work goes into making  an efficient moderator or shroud and I appreciate his adding and expanding my earlier comment to the person who put down the original post, we need to encourage members to participate and show off their stuff and not discourage them with negativity, Neil.

     

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    Verve
    Participant
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    NeilClague

    Not sure what you meant by your borrowed from Wildcat design, I have been making that kind of shroud for years, before Wildcats were even for sale!  I was making that design long before the Crickets came out and I am pretty sure someone must have used it before I started to make them. I think they have only started to show up because they are more freely accepted on air guns now. When I first started to make these they were very taboo and you could not even mention them on forums, thank god the forums have started to be a bit more open minded now and allow us to at least have some chat about them and how they work on our guns.

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    Hi Neil
    I didn’t know that you had been making these designs for a long time. I’m a newbie in all this with limited knowledge. I have a Wildcat as well so took the shroud off it and fitted on the Impact barrel. That’s how it came to me hence ‘borrowed from WC’ comment.

    Looking forward to your shroud for Impact. Have you received the rifle from friend?

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