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Question F1 Chrony Query, FPS or MPS?

Discussion in 'Anything Airgun Related' started by resnikov, Oct 2, 2014.

  1. resnikov

    resnikov Busy Member

    Messages:
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    Location:
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    Just bought an F1 Chrony from merlin archery http://www.merlinarchery.co.uk/chrony-archery-chronograph-with-lighting-system.html and i've been trying to use it and I'm now confused.

    The manual says F-1 Chrony measures in FPS and it says FPS on the front next to the display. All good I thought and recorded some shots with a couple of rifles and my pistol and then started to work out the ft/lbs. From the first calculations the pistol was about right and the rifles were woefully underpowered.

    I then read the manual a bit more and its says for units set to measure in MPS the display will flash A.L and for units set to measure in FPS the display will flash AL when switched on. Mine displays A.L :confused:

    Ok so i thought i need to re do the calculations with MPS instead of FSP, this then puts the rifles about right and the pistol well over.

    Now it could be i'm trying to do this in my garage and I cannot get far enough away from the chrono to start with so I'm getting odd readings so until I can get out at the weekend and set it up in the garden I'm not to worried about the results I just want to know if its FPS or MPS.

    Does anyone else have an F1 that displays A.L when you power it on?
     
  2. mattyts

    mattyts Donator

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    Location:
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    Mine displays AL along with the little "U"s either side flipping up and down,in FPS.

    Mine also picks up readings from about 3-4 inches away but I use mine outdoors,have you used yours with and without the white bars?
     
    Last edited: Oct 2, 2014
  3. Ganton Gunner

    Ganton Gunner Super Duper Moderator Staff Member Mod/Admin

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    it should be in fps think only the yanks etc get the mps versions
     
  4. Silwer

    Silwer Member

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    Location:
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    M1 is the Metervariant F1 should be in imperial
     
  5. resnikov

    resnikov Busy Member

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    Location:
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    Yes mine has the flipping "U"s but has A.L not AL.

    Yes using the white bars with the lighting kit on.

    The lighting kit that came with it had US plugs on it, maybe i have a US one.
     
  6. mattyts

    mattyts Donator

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    Location:
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    You could always multiply the meter results by 3.2808399 ;)
     
  7. Silwer

    Silwer Member

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    Location:
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    A question why would the US get a metervariant? they are far more removed from the metersystem than you are?

    I have never seen them measure Power or speed in MPS and Joule.
     
  8. resnikov

    resnikov Busy Member

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    Location:
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    Just tested all my guns and the chrono is definitely measuring in mps even though it says fps on it.

    But the main bit is all the guns are legal :)
     
  9. Slinger

    Slinger Engaging Member

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    Location:
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    I also bought a Chrony from the same supplier as the OP, last week.

    The overhead lighting kit supplied with the unit arrived with 130v bulbs

    One of them was in shards

    They were wired so that only one bulb would light with any setting of the two switches


    In addition my unit has exactly the same feet/metres problem as the OP's unit

    All in all, a totally typical British air gun industry transaction.

    By "typical" I mean that this kind of poor service/quality control/customer contempt is likely to occur in at least one transaction in every five a person makes.

    I bitterly resent the time & trouble one has to take to put these unacceptable c%*k-ups right.
     
  10. Patrick

    Patrick Donator

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    Location:
    Wiltshire
    Having just looked on the Merlin Archery web site I'm puzzled as to why they're offering an F1 chrony c/w lighting kit for £84.31 or an F1 Chrony minus the lighting kit for £96.53 :confused: Perhaps they're aware of this,shall we say minor defect i.e measuring in mps instead of fps,that's why they're cheaper.
     
    Last edited: Oct 9, 2014

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