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

Faulty Gauge Air Arms S400f Classic?

Discussion in 'Technical' started by Painey, Aug 28, 2019.

  1. Painey

    Painey Active Member

    Messages:
    35
    Likes Received:
    50
    Hi I’m new to pcp air guns and I’ve just got a air arms s400f classic ive put it on a tank to fill it and the gauge on the tank was reading 190 but the gauge on the gun only reads 100 could the gauge on the gun be faulty or is it a common fault any suggestions would be greatly appreciated
     
  2. Popgun

    Popgun Donator

    Messages:
    4,974
    Likes Received:
    4,978
    Location:
    Royston - North Herts
    Rifle gauges are not accurate, just a guide
     
    Painey likes this.
  3. mikeyhall1

    mikeyhall1 2018 Forum Nice Guy - Pepe Le Pew

    Messages:
    29,973
    Likes Received:
    27,562
    Location:
    Chelmsford/Upminster - Essex
    As above, but only usually by 10 bar or so, not 90 bar out...
     
    Painey and Husky-loves-to-run like this.
  4. Victor Robert Allaway

    Victor Robert Allaway Engaging Member

    Messages:
    266
    Likes Received:
    194
    Location:
    Bsaingstoke
    I acquired an S400 from a friend who hadn't used it for some time. The gauge read 150 bar and continued to do so for th) first couple of fills by pump. When I bought a tank (and probably gave it rather too sudden a burst of air) the gauge on the rifle suddenly jumped to roundabout the correct pressure i.e. matching the pressure shown on the tank's gauge.

    Rob.
     
    Painey likes this.
  5. Phil S410F

    Phil S410F Busy Member

    Messages:
    546
    Likes Received:
    689
    Location:
    Middlesex
    @Painey is it a new gun or second hand.

    If second hand were you advised if it had a regulator fitted? If it has a regulator fitted the standard pressure gauge will give the regulated pressure and not the cylinder charge pressure.
     
    cloverleaf and Painey like this.
  6. mikeyhall1

    mikeyhall1 2018 Forum Nice Guy - Pepe Le Pew

    Messages:
    29,973
    Likes Received:
    27,562
    Location:
    Chelmsford/Upminster - Essex
    Very good point
     
  7. Painey

    Painey Active Member

    Messages:
    35
    Likes Received:
    50
    Thankyou for the info. I weren’t advised wether it had a regulator or not and didn’t know to ask how will I know if it’s regulated?
     
  8. Lev Levvin

    Lev Levvin Pro Poster

    Messages:
    5,807
    Likes Received:
    7,158
    Location:
    Cornwall
    I had exactly this same problem on an s410 classic that wasn’t used for a while.

    Was recommended one of these by Mikey....

    A9AC33DC-14BB-4CF7-8B0B-42C3F32368C0.png

    eBay number 283466169893

    Emptied gun of all air,
    Fitted this gauge

    Problem solved, reading correct pressures.
     
  9. Dennis74

    Dennis74 Active Member

    Messages:
    45
    Likes Received:
    26
    Shoot it until cylinder is empty. Double check that it's empty and take the cylinder off. Have a look inside.

    When you don't feel confident, seek for help!
     
    Lev Levvin likes this.
  10. Lev Levvin

    Lev Levvin Pro Poster

    Messages:
    5,807
    Likes Received:
    7,158
    Location:
    Cornwall
    I’m sure someone will correct me but I’m pretty sure if it’s had an aftermarket regulator fitted there will be a small vent hole drilled in the air cylinder near the breech end of the cylinder
     
    Richard Ellis Jones and Popgun like this.
  11. Dennis74

    Dennis74 Active Member

    Messages:
    45
    Likes Received:
    26
    No. Altaros for example, does not require toy to drill a hole.

    Just don't take any risk. Open it up or ask someone to do it for you. It's a 10 min job.
     
    Lev Levvin likes this.
  12. Lev Levvin

    Lev Levvin Pro Poster

    Messages:
    5,807
    Likes Received:
    7,158
    Location:
    Cornwall
    Agree it’s an easy job to unscrew the air tube when it’s totally empty of pressurised air.

    Grip it tight by hand and it should unscrew easily from the breech

    Once it’s off, look inside... there should be nothing inside an unregulated tube at all.

    There will be a brass tube attached to the breech that sits inside the air tube.. but nothing attached to the air tube itself
     
  13. Roger Archbold

    Roger Archbold Engaging Member

    Messages:
    277
    Likes Received:
    147
    Location:
    Hampton, middlesex
    If you unscrew the cylinder without first removing the breech housing, you will mark the cylinder, if that doesn't bother you, then yes, go ahead
     
    cloverleaf likes this.
  14. Lev Levvin

    Lev Levvin Pro Poster

    Messages:
    5,807
    Likes Received:
    7,158
    Location:
    Cornwall
    Good point... forgot about removing the top half of the breech action

    This is only possible once the anti tamper studs have been removed too.
    Unless it’s a very old pre 2006 rifle

    Personally and from experience of a sticky gauge on a classic, which is much more common than a regulated 400 series...

    I’d buy a new gauge for less than £15 and fit that without worrying if it’s got a regulator :thumb:
     
  15. Shotaholic

    Shotaholic Engaging Member

    Messages:
    371
    Likes Received:
    255
    Location:
    Somerset
    I don't think I've ever looked at my S400f gauge. I just fill to 195 bar as indicated on the bottle and after (up to) 100 shots simply refill to 195 bar again (yes, I do keep tabs on the number of pellets/ammo put through all my guns).
     
  16. Lev Levvin

    Lev Levvin Pro Poster

    Messages:
    5,807
    Likes Received:
    7,158
    Location:
    Cornwall
    I’d put less pressure in than 195 bar...
    The hammer will struggle to open the valve at that pressure

    My 400’s always perform best between 170-100 bar... really accurate and consistent
     
    Shotaholic likes this.
  17. Shotaholic

    Shotaholic Engaging Member

    Messages:
    371
    Likes Received:
    255
    Location:
    Somerset
    Never had any issues Lev, not even noticed any accuracy issues at that pressure. Must admit I've never chronoed at full pressure only at lower pressures so it might be interesting to see the differences (sorry for highjacking your thread Painey)
     
    Lev Levvin likes this.
  18. Lev Levvin

    Lev Levvin Pro Poster

    Messages:
    5,807
    Likes Received:
    7,158
    Location:
    Cornwall
    My FPE jumps up considerably at 170 bar compared to 190

    I’ve found 170 is the sweet spot on both my s410’s
     
  19. Phil S410F

    Phil S410F Busy Member

    Messages:
    546
    Likes Received:
    689
    Location:
    Middlesex
    Have to agree there @Lev Levvin my sweet spot starts at somewhere just under 180 (probably 175) down to about 110.
     
    Lev Levvin likes this.
  20. Lev Levvin

    Lev Levvin Pro Poster

    Messages:
    5,807
    Likes Received:
    7,158
    Location:
    Cornwall
    I love the 400 series... barely changed in 20 years

    They don’t really need regulating because they’re so damned consistent between 170-100 bar
     

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