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Thread: Single stroke pneumatic air rifle

  1. #16
    Sharp Shooter

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    Hi Timothy
    I was referring to this type of valve. I hope the image is visible, if not I will take CK up on his offer to help attach it, for some reason I am having trouble to link the image to this post, probably a
    ID10T error.

    [IMG]
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  2. #17
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    Hi timothy eny plans ore drowings you can send me plz im starting a pcp build thanks
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  3. #18
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    Quote Originally Posted by Buksie View Post
    Hi Timothy
    I was referring to this type of valve. I hope the image is visible, if not I will take CK up on his offer to help attach it, for some reason I am having trouble to link the image to this post, probably a
    ID10T error.


    Hi Buksie, That was my original idea and I tried variations of it but it's prone to leaking. I am unable to machine it as in the dwg with the O rings with my skill level but found that the higher the pressure the harder it was to pull the trigger. The Webley also has a similar but far more complicated system and they have a safety/valve lock that needs to be locked as far as I can understand. This pushes the shaft face against the valve to force a seal and locks the valve shaft onto the sear. Once locked the safety can be released and the trigger pulled. I am now on my 5th valve design and each one gets closer to what I originally wanted. Have already blown one valve out of the back of the rifle during testing, my fault, didn't secure the lock nuts properly.
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  4. #19
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    Quote Originally Posted by Japie1012 View Post
    Hi timothy eny plans ore drowings you can send me plz im starting a pcp build thanks
    Hi Japie, Not really, this is my first build and I am making it up as I go along. Once I have figured out the beast I will make up some drawings from the working parts for out sourcing the machining. Will do then
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  5. #20
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    Final test before I start the finishing process. Once finished I will post a vid of the chrony test I still need to do. A friend will be lending me his as soon as he gets back.

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  6. #21
    Sharp Shooter

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    Hi Timothy
    This looks very promising. Congratulations, I look forward to the chrony results.
    Was this power level achieved by a single stroke of the pump?
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  7. #22
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    Quote Originally Posted by Buksie View Post
    Hi Timothy
    This looks very promising. Congratulations, I look forward to the chrony results.
    Was this power level achieved by a single stroke of the pump?
    Thanks, yes. I redesigned the valve and increased the volume of the tube. Compressing 230 cm3 into around 0.9cm3. The whole point was to achieve one pump one shot. My buddy is busy anti poaching in the karoo so have to wait for him to get back before I can chrono. don't have money for one of those toys.
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  8. #23
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    Hello Timothy,

    Congratulations.

    I admire and appreciate your skills and abilities.

    I can't wait to see the finished product.

    Keep well.

    Cheers.
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  9. #24
    REP: Xtreme Airguns

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    a webley rebel and sharp tiger uses the exact same vale,
    i have one lying around if you want it, can play around with it, improve it. pm me if interested
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  10. #25
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    Quote Originally Posted by Juniper View Post
    Hello Timothy,

    Congratulations.

    I admire and appreciate your skills and abilities.

    I can't wait to see the finished product.

    Keep well.

    Cheers.
    Thanks, much appreciated.

    - - - Updated - - -

    Quote Originally Posted by pelletstacker View Post
    a webley rebel and sharp tiger uses the exact same vale,
    i have one lying around if you want it, can play around with it, improve it. pm me if interested
    Thanks, I based my design on those two. Not sure if they will fit the tube though, my valve is 26mm OD.
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  11. #26
    REP: Xtreme Airguns

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    nope, this valve 19mm
    worth a try
    great work sofar mate
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  12. #27
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    Default Single stroke pneumatic

    Single stroke pneumatic build coming along. Been almost a year so far. Started the stock this morning


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  13. #28
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    Fabricating scope mount. After that I need to fabricate the trigger mechanism and then finishing and fine tweaking


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  14. #29
    Protea FT Team '18/'19
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    Wow well done.
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  15. #30
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    Quote Originally Posted by Cor View Post
    Wow well done.
    Thanks

    Quick vid of the first hammer test
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