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Blast Tamer????

Discussion in 'Anything Airgun Related' started by jay5488, Mar 22, 2014.

  1. jay5488

    jay5488 Donator

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    I have made and installed one of these blast tamers to my little ultra, I've not done a shot string just yet but I can't help but wondering, it looks too simple to do anything!!
    I got some 3mm 316 stainless rod, 90deg bend and tucked behind the cocking pin, the bar then runs through a snug but not too snug bracket and finished off with a spring and locknut!! There is slight pressure on the spring when un cocked leading to almost full compression when cocked.
    It runs freely and there's no binding at all, I will be doing a chrono session on Monday and will report back with my findings, as of now however, I'm unconvinced!!!!

    Jamie
     
  2. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

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    I used an elastic band,

    i got about 8 more full power shots, and also made the hammer bounce quieter:)
     
  3. jay5488

    jay5488 Donator

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    Wow..... Didn't think it would make that much of a difference, has it improved consistency???
     
  4. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

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    Neither did I mate! Only did it to try and stop the hammer bounce farty noise.

    From memory the rifle has about a 10ft p/s spread:)
     
  5. jay5488

    jay5488 Donator

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    It'll be interesting to see the results as mine isnt regged.... I'll do a before and after!!
    Is yours regged, if so it's a nice mod to get more shots!!
     
    Last edited: Mar 22, 2014
  6. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

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    Yeh mine is regged mate, I like things to work the best they can:up:

    I think its a brilliant upgrade, well worth the money as the rifle is stripped, serviced and any tiny niggles are fixed.

    In .22 I get 86 full power shots with the b-tamer fitted, -8 without before it goes off reg. If you have a bit of spare cash floating around I would defo recommend a reg fitted and tune. Would never part with my little ultra:up:
     
  7. clbarclay

    clbarclay Engaging Member

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    Have either of you any pictures of your blast tamers? The only one I've seen used the MMC guide so would only fit the bolt action versions.

    Steve does your elastic band pull the hammer towards the valve or hold it back?
     
  8. jay5488

    jay5488 Donator

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    I'll get a pic tomorrow, mine is an se so doesn't have the mmc!!
     
  9. Soximus

    Soximus Busy Member

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    Behind you! Mwhahahahah Just kidding. Christchurch
    What the hell is a "blast tamer"??
     
  10. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

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    The elastic band pulls the hammer forward, so it stops the hammer bouncing back again and again of the valve, if I had the bolt action I would have done the same as jay5488 as have an idea what he has done.

    The mmc gets in the way of his method, so the elastic band was adopted. Will get a picture up:up:
     
  11. jay5488

    jay5488 Donator

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    Here's mine....
    [​IMG]
     
  12. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

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    Nice work mate, here's mine
     
  13. jay5488

    jay5488 Donator

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    Looking good that Stevie!!!! Mines a mk1, I can see room for improvement!!!!
     
  14. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

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    The elastic band works, wasnt going for more shots but that was a nice bonus!!

    but it did help with the valve bounce which drove me mental!!! The power increased with the extra pull of the band, so a small decrease was required

    i think you will be surprised after a full shot string:)
     
  15. El Caro

    El Caro Keyboard Hero

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    The JB Blast Tamer was devised by Bowkett and fitted to export versions of the Scorpion to quieten it right down and lift the shot count. It was simple and worked lifting shot count by about a third at 33 ft/lbs power:eek:. It was not put on UK models because it was too easy for the owner to increase power above the limit I was told when I asked JB.
     
  16. clbarclay

    clbarclay Engaging Member

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    I tried tried elastic bands last night as a quick try without the stock just to see whether it made a difference to sound, with no obvious effect. That's why I wondered which way the band had to be pulling, but by the look of it the bands I tried were too weedy or didn't have enough tension.
     
  17. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

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    Probably need a thicker band, just enough to stop the valve from bouncing/opening 4 or five times, which in turn wastes air.

    But be careful!! as the extra tension will make the hammer strike harder, so a adjustment to decrease the power could be needed.

    This is is where a combro is key:)
     
  18. clbarclay

    clbarclay Engaging Member

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    Yep, I already have a combro and then turned the ultra down after getting it.
     
  19. Stevie Darling

    Stevie Darling Sexual tyrannosaurus

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    If you dry fire until empty, the valve bounce is easier to hear, then try different bands until the ping of the hammer strike is all that is heard, then adjust power to suit.
     
  20. rkr

    rkr Keyboard Hero

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    I've made them for all of my BSA PCPs and they work very well. Here's a Scorpion SE version:

    [​IMG]

    This is the shot string after I installed it:

    [​IMG]

    This is the muzzle blast + action noise with the BT and without:

    [​IMG]
     

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