Air Chrono Vs the Polish...

Discussion in 'General Airgun Chat' started by RobF, May 16, 2017.

  1. RobF

    RobF Administrator Staff Member

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    Found this on Youtube...

    Seems like a IR pulse rig timed showing it against the internals of a polish chrono, then put against the air chrono... skip to 7 mins in to see the ranges of speeds we're interested in.

    It would have been good to see the polish set to 2 decimal places as some errors could be lost in rounding, but the air chrono seems to wander a bit...

    https://www.youtube.com/watch?v=YkmAEMTCIQM&feature=youtu.be
     
  2. dutoitk

    dutoitk Member

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    Thought I was imagining things.

    Shooting through the center of the Air Chrono gives more consistent readings and when compared against a ProChrono, the readings are very close.
    As soon as you move to either side of center, the readings seem to drop by 5 to10 feet per second versus the ProChrono.
     
  3. SDplinker

    SDplinker Pellet testing...yawn

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  4. RobF

    RobF Administrator Staff Member

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  5. what barn door

    what barn door Now them tin chickens are going to get it....

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    I've looked at both of these videos now and to be honest I am not 100% sure of what's going on.

    Are the two led's placed a precise distance apart and then flashing at a pre-set frequency or something? :confused:
     
  6. dave croucher

    dave croucher FT, the sport where simple becomes complicated

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  7. RobF

    RobF Administrator Staff Member

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    Yes they're dipping at a Pre set delay between front and back simulating a pellet and thus showing how well the chrono reads.
     
  8. Diabolo

    Diabolo Member

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    Hi Rob-I had never seen the Polish Chrono before today. Shot comparison reading's from my Dominator identical to my PM110 and that is a GOOD one:D
    How much are these Polish ones and where might one be found?:)
     
  9. what barn door

    what barn door Now them tin chickens are going to get it....

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    Ahh thanks Rob.

    Dave yep there is a strong similarity for sure:D
     

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