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Poor Man's Chrono

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  • 27-05-2009 11:56am
    #1
    Leftyflip
    Registered Users Posts: 7,463 ✭✭✭


    Was just testing the fps on my M4,
    and it went through both sides of the can :eek::eek:
    I used a 7UP can, instead of the normal coke can,
    do different cans give different results
    or is the fps way too high?


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    #2
    The Master
    Moderators, Category Moderators, Music Moderators Posts: 14,316 CMod ✭✭✭✭The Master


    Different cans will be made in different ways/materials and such.

    Completly unreliable way to test FPS.

    You're better using a proper chrono to get an accurate result


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    #3
    Leftyflip
    Registered Users Posts: 7,463 ✭✭✭Leftyflip


    ohhh ratsss,
    anyone wanna give me a chrono??


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    #4
    The Master
    Moderators, Category Moderators, Music Moderators Posts: 14,316 CMod ✭✭✭✭The Master


    Your local site or retailer will have one.


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    #5
    Toasty113
    Registered Users Posts: 1,614 ✭✭✭Toasty113


    Try a coke can, if it just about puncture both sides its around one joule. But i dont think that will work with site owners or gardai. Redwolf have an article on it if you want more info


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    #6
    The Master
    Moderators, Category Moderators, Music Moderators Posts: 14,316 CMod ✭✭✭✭The Master


    Toasty113 wrote: »
    Try a coke can, if it just about puncture both sides its around one joule.

    Don't even bother doing this It's wildly unreliable.

    What type of coke can?
    How far away should you be?
    Shooting straight down or horizontally?
    Just about puncture? how do you measure that?

    This type of test gives you no real info at all.

    Get it chrono'd properly!


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    #7
    Stercus Accidit
    Registered Users Posts: 8,758 ✭✭✭Stercus Accidit


    Toasty113 wrote: »
    Try a coke can, if it just about puncture both sides its around one joule. But i dont think that will work with site owners or gardai.

    understatement of the year!

    Cans of coke are for 12 year old american kids with useless aegs to boast about online, it is the worst half assed rumour about airsoft that you can use this "method" to gauge fps. And is guaranteed to get you in trouble if you use it in this country.

    They don't have a 1 joule law to worry about, we do, so get down to a retailer or site or a mates and use their chronograph, not some empty soft drinks container you find lying around outside.


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    #8
    Toasty113
    Registered Users Posts: 1,614 ✭✭✭Toasty113


    For the record, that understatement was intentional!


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    #9
    Leftyflip
    Registered Users Posts: 7,463 ✭✭✭Leftyflip


    Fair enough, lesson learned,
    last time I use information from Redwolf,
    no need to get annoyed over it though :/


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    #10
    GrumPy
    Registered Users Posts: 6,557 ✭✭✭GrumPy


    I seen a site recently selling chorno's for 40 blips. Can't remember where though. :o


    Other than that, cheapest is prolly €100 on www.airsofteire.com If I recall correctly.


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    #11
    Flecktarn
    Registered Users Posts: 1,916 ✭✭✭Flecktarn


    I was very tempted by this one.Good reviews on the community forum as well

    http://www.rsov.com/index.php?target=products&product_id=2063


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    #12
    Toasty113
    Registered Users Posts: 1,614 ✭✭✭Toasty113


    Damn thats cheap! But having your own chrono would be pointless I think unless your an avid upgrader or importer.


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    #13
    ED E
    Registered Users Posts: 36,167 ✭✭✭✭ED E


    I got a cheap one from RSOV, it is designed primarily for Air Rifles and is junk.

    Thats on to buy list pending my reading of a review.


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    #14
    Masada
    Banned (with Prison Access) Posts: 11,001 ✭✭✭✭Masada


    Flecktarn wrote: »
    I was very tempted by this one.Good reviews on the community forum as well

    http://www.rsov.com/index.php?target=products&product_id=2063

    that chrono is crap, they can go a bit mad and give wild readings. i shot a KAR98 through one and got 700fps when it was actually firing 260.
    Stick to Xcortech, its the most reliable chrono ive used. :)


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