1. The Forum Rules have undergone some minor changes and updates.  Please take the time to read them; it will only take a couple of minutes of your time. By doing so, you lessen the chance of incurring the wrath of the moderation team or making yourself look foolish to other members.

    90% of users posting adverts in the Sales forums need to be reminded to read the rules as their posts are wrong.  This is unnecessarily time-consuming and will no longer happen - if your advert doesn't follow the Sales Rules it will be deleted and you'll have to start all over again.

    To close this box once you've read it (and the Rules), click on the X in the top right-hand corner.

    Thank you.

    AGF Staff



    Dismiss Notice
  2. A reminder of one of the Forum Rules:

    'Behaviour

    Do not make inappropriate or offensive posts - including threats, harassment, swearing, prejudice, defamation, deliberate insults or name-calling, other negative remarks about this forum, its moderators and administrators or your fellow members. Even if this is just your own personal opinion, RESPECT YOUR FELLOW MEMBERS.'

    There have been changes made to our censoring software in an attempt to help with this growing problem.

    Click the X in the top-right-hand corner to dismiss this notice.
    Dismiss Notice
  3. Dear members,

    Our membership (like our country) consists of people from all walks of life; different in far more ways than can be listed here and each with a different view based on their experience of life - regardless of their colour, religion or cultural heritage. Every single person in the UK has been born of mixed race – we are a multi-coloured and multi-cultural country.

    As many of you are aware there are a handful of individuals amongst this membership that persist in making provocative, inflammatory, racist and otherwise offensive comments. This has been happening across the forum to a certain degree but is most especially prevalent in the Adult section.

    The moderation team has tried to stay on top of this, however unfortunately because of the ‘offensive’ nature of much of its content we don’t monitor the Adult section quite as much as perhaps we should. As a result much of this behaviour has gone unnoticed unless it has been reported to us. While the team always intended to take a "light touch" approach to the Adult section it would seem that some people aren’t quite adult enough to be left unmonitored after all.

    This behaviour is, and always has been against Forum Rules as well as the specific stipulations of the Adults forum and it will no longer be tolerated. We feel it's time to draw a line in the sand and as such from this point onward offenders will receive an immediate and permanent ban from the forum.

    In order for us to achieve our goal of restoring the forum to the friendly and tolerant place it once was, we ask that ALL members be mindful of the content they post and help us to stop unacceptable behaviour by using the 'Report' tool at the bottom of any offending post - the results of which can be seen only by Admin/Moderators.

    You should all receive a copy of this message by PM. 

    To close this message box, click on the 'X' in the top-right-hand corner.

    Dismiss Notice
  4. Hotmail block emails from us entering your inbox. Unless you can setup a safe sender you will not get activation emails from the forum. Please use an alternative provider or complain to Hotmail.
    Hotmail addresses include.

    @Hotmail.co.uk @Hotmail.com @outlook.com @Live.com
    Dismiss Notice
  5. Postings on Politics, Religion & Controversial Off-Topic Material

    The majority of users do not want to read about these subjects and people have left the forum as a result of it – this is after all an 'Airgun' Forum. It’s all very well to say they don’t have to read it if they don't want to, but as most of us use the ‘New Posts’ button there is no easy way to avoid it.

    All AGF staff members are in favour of people being able to discuss what they want, but we have to draw the line somewhere if it is upsetting other users. We don’t want to read about these topics either.

    IMPORTANT- The discussion of politics and religion is no longer allowed anywhere on the forum (including the Adult section).  The only exception is if it's airgun related - they must be put in the Airgun Related Politics section..

    We will not tolerate bullying or personal attacks, racism or any other offensive 'isms'. we will remove these topics from the forum, we will not give you an area where you can abuse each other. We will not hesitate to ban offenders.

    To clear this text box, click on the 'X' in the top right-hand corner.

    Dismiss Notice

Qb78 just leaks all the pressure from under stock

Discussion in 'Anything Airgun Related' started by m4tth3w, Jan 29, 2014.

  1. m4tth3w

    m4tth3w Donator

    Messages:
    43
    Likes Received:
    0
    Location:
    Barnsley
    What is the most likely cause? Seals / valve / gun buggered?

    are they worth fixing?
     
  2. hawk eye

    hawk eye Banned

    Messages:
    901
    Likes Received:
    0
    Location:
    Rotherham, United Kingdom
    yes it can be fixed sounds like its the seal has gone. cheap enough to fix. other parts pritty cheap as well to get a hold of. i fixed one of these a month or so back that was leaking like a tea bag lol
     
  3. bobbie1

    bobbie1 Busy Member

    Messages:
    928
    Likes Received:
    9
    Location:
    fylde coast ,,,
    sounds like the seal around the valve ,it's worth fixing and quite easy with the right tools,
    if it is the valve O-ring it's the same size as the one on the end cap ,
     
    Last edited: Jan 29, 2014
  4. hawk eye

    hawk eye Banned

    Messages:
    901
    Likes Received:
    0
    Location:
    Rotherham, United Kingdom
    if you need a hand you can always drop it into me buddy and i can take a look see. if i can fix it for you just make a donation to the wellies charity on here ATB hawkeye
     
  5. m4tth3w

    m4tth3w Donator

    Messages:
    43
    Likes Received:
    0
    Location:
    Barnsley
    Cheers hawk eye that's much appreciated
     
  6. hawk eye

    hawk eye Banned

    Messages:
    901
    Likes Received:
    0
    Location:
    Rotherham, United Kingdom
    no problem buddy
     
  7. m4tth3w

    m4tth3w Donator

    Messages:
    43
    Likes Received:
    0
    Location:
    Barnsley
    Just out of interest why would co2 escape the tube in the area of the valve as surely that's a sealed tube isn't it?
     
  8. mattyts

    mattyts Donator

    Messages:
    6,202
    Likes Received:
    159
    Location:
    Yorkshire
    Probably a split seal,Co2 gets very cold and can freeze your seals and turn them very brittle
     
  9. hawk eye

    hawk eye Banned

    Messages:
    901
    Likes Received:
    0
    Location:
    Rotherham, United Kingdom
    wear and tear on the seals. so much as a hair stuck in seal to create a leak.
     
  10. m4tth3w

    m4tth3w Donator

    Messages:
    43
    Likes Received:
    0
    Location:
    Barnsley
    No what I mean is the tube that u stick the capsules in, surely that tube shouldn't have any holes in for gas to escape?
     
  11. mattyts

    mattyts Donator

    Messages:
    6,202
    Likes Received:
    159
    Location:
    Yorkshire
    I don't know the Qb78 inside out but i'm guessing its the seal that keeps the co2 within that chamber
     
  12. hawk eye

    hawk eye Banned

    Messages:
    901
    Likes Received:
    0
    Location:
    Rotherham, United Kingdom
    it has a brass cylinder inside that house a pin the punchers the co2. and there is a seal that is around the cylinder which can wear out or even become loose.
     
  13. ped

    ped Keyboard Hero

    Messages:
    2,568
    Likes Received:
    1,651
    Location:
    leeds
    the main valve seal only usually fails if the gun has been left empty for a length of time
    its a relativly easy fix welsh willy does a full seal kit for not alot of money and a re bolt kit in stainless which is recommended the seal size is bs113 same as the gas plug and needs to be made out edpm as opposed to nitrile buna
    ped
     
  14. m4tth3w

    m4tth3w Donator

    Messages:
    43
    Likes Received:
    0
    Location:
    Barnsley
    Well that makes sense cos it hasn't been fired for over a year

    is it best to leave pressurised?
     
  15. hawk eye

    hawk eye Banned

    Messages:
    901
    Likes Received:
    0
    Location:
    Rotherham, United Kingdom
    m4tth3w do you know what power outage its putting out at all ??
     
  16. ped

    ped Keyboard Hero

    Messages:
    2,568
    Likes Received:
    1,651
    Location:
    leeds
    co2 guns are best left with co2 in
    ped
     
  17. m4tth3w

    m4tth3w Donator

    Messages:
    43
    Likes Received:
    0
    Location:
    Barnsley
    No idea. Stock i think they are 7 ish
     
  18. hawk eye

    hawk eye Banned

    Messages:
    901
    Likes Received:
    0
    Location:
    Rotherham, United Kingdom
    ok well ill chrono it for you and while im doing the seals on it i can crank power up a little if you would like it wont do a lot so dont be expecting 11.5 lol. your shout or i will just do seals for you budd
     
  19. ped

    ped Keyboard Hero

    Messages:
    2,568
    Likes Received:
    1,651
    Location:
    leeds
    becareful upping the power too much with the temp being colder or you could have a gun that is over in summer
    xs78's are more than capable of achieving power levels above 12fpe on co2 with not alot of work
    ped
     
  20. hawk eye

    hawk eye Banned

    Messages:
    901
    Likes Received:
    0
    Location:
    Rotherham, United Kingdom
    yea i know budd. it will be done in a warm place so i get a summer reading on the chrono. realy easy to do as ive done loads of them. cheers for the heads up anyway ped :up:
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice