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Josefgerbils

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About Josefgerbils

  • Rank
    AF-UK Newbie

Profile Information

  • Guns
    Sa20 m g&g cm raider cyma520 AA r27 AA r45 beretta 92fs
  • Loadouts
    Whatever is comfy
  • Sites
    Finmere

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  1. Time Left: 9 hours and 49 minutes

    • Wanted
    • Used

    Cyma CM520. In mint condition, comes with 2 mags both hicap battery and basic charger.Looking for an aep or support weapon of equivalent value. Spare mag and battery would be a big bonus

    NO VALUE SPECIFIED

    Milton Keynes - GB

  2. Ok after a full night of testing I have found the elephant in the room. Tried 2 7.2 v and 1 8.4v and 1 9.6v . For some bizarre reason all batteries apart from the suspect 7.2 gave readings just under 400 fps , the problem battery gave readings of 350 fps ish. Not quite sure how its happening but I think the problem almost certainly lies with that battery.
  3. Just in the process of charging all 3 varieties of battery. A fully controlled science type thing is being prepared. All shots will be taken with .20 bb over 10 shots per battery. Have to charge them first in the interests of base lab conditions. I will get to the bottom of this (with your help) of course
  4. Thanks for all the replies guys. I have tried swapping and taking readings. And a 120 spring is not too extreme an upgrade for an aeg. Just baffled by this. Will do a fresh set of chronograph readings later and pop them up Cheers Bob
  5. Or ....is the 7.4 just knackered? That theory works , because if it runs fine on both other voltages, then why not that ?
  6. So you think it could be a case of the spring being too powerful for the battery @ 7.4 ? If so am I wrecking my gun ? Or was the stock gun intended to run on a bigger battery? So therefore it takes that to move the piston effectively?
  7. Hi all. Be prepared for a lot of stupid questions! Whilst I am not new to airsoft, I have just been one to pull the trigger and see it shoot. Never understood the witchcraft of internal......doings. that's kinda changed recently . I purchased a lovely aeg that I soon had the hankering to go DMR with. I felt a little more power was in order as the gun was very accurate at its stock 310fps but was unsuited to my particular playing style. I opted to do a simple spring change and see what happened. I opted for a 120 spring and was happy with an accurate just under 400fps . My problem is that's very battery specific. I get just below 400fps on 8.4 and 9.6 but dropping down to 7 4v the power drops off to 348fps . That's on a fully charged battery. Does battery have that much effect on power? I was always led to believe that it didn't. Or am I putting my gun under too much strain with a 120 spring ? Please forgive the stupid question, but I'd rather have a gun running stock than a wreck. Cheers Bob
  8. Josefgerbils

    Cm520

    THIS ADVERT IS 'UNCOMPLETED' - THIS MEANS THE ADVERTISER HASN'T BUMPED THIS LISTING, BUT IT COULD STILL BE WORTH CONTACTING THEM.

    • Swap only
    • Used

    Cyma CM520. In mint condition, comes with 2 mags hi cap. Accurate but running a bit hot max 348fps with .25's so would need de tuning . Was my first gun but sitting and gathering dust now. Ideally looking for a sniper rifle , M16 or a Sniper backup weapon . Open to other stuff though Cheers Bob

    NO VALUE SPECIFIED

  9. Put an advert in the swaps section and its pink with a warning exclamation mark. It also has no way to contact me on the ad . What have I messed up or what is wrong? Cheers Bob
  10. No shenanigans here sir. Perhaps the slightest hint of a kerfuffle though
  11. Josefgerbils

    Cyma cm520

    This advert is COMPLETED!

    • Swap only
    • Used

    Cyma CM520. In mint condition, comes with 2 mags hi cap. Accurate but running a bit hot max 348fps with .25's so would need de tuning . Was my first gun but sitting and gathering dust now. Ideally looking for a sniper rifle , M16 or a Sniper backup weapon . Open to other stuff though Cheers Bob

    NO VALUE SPECIFIED

    Milton Keynes - GB

  12. I have been a member for sometime (originally basically72) but having changed computer and seemingly being impossible to reset my forgotten password I have had to re register. The screen name is something I promised myself I would do after chatting to Adolf Hamster. Please feel free to remove basically72 admins.
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