Chrony suggestions?

[MikeBjerum]

Good Choice!

Like I said earlier - That is what we are he is using ... I'm not allowed to shoot at it until I get a replacement wire for the one I hit    Can't hit a great big A zone, but I can strip that little skyscreen wire right off the machine 

Just remember that that "O" on the front is a part of the logo and not a target 

[alfsauve]

Be careful where you aim.  NEVER, EVER, try to use it freehand.  Always shoot from a rest.

There's a saying on the air rifle forums:

There are  only two types of chronographs.  Those that have been shot and those that will be.

[Badgersmilk]

"I'm not allowed to shoot at it until I get a replacement wire for the one I hit"    

I almost ordered a spare set already, but thought I may just be jinxing myself.

Anybody know how these things actually work?!?  I'm guessing they bounce a signal back and forth from the left wire to the right wire, and count how long it takes the bullet to get from the first set to the second set.  But what kind of signal would it be (radio wave, ultra-sonic) when I read so much about Chronographs being effected by bad light?  I dont see how aluminum rods picks up light signals...

THIS LOOKS COOL!  (plug your laptop directly into the chrony and control / operate it!)

http://www.swproducts.biz/Chronocap.php

Works in conjunction with this to map EVERYTHING out.

http://www.robsoft.nu/rro3_en/screenshots.asp


 

[Timothy]

I'm gonna guess!

Pressure wave and the doppler effect when the projectile passes through the detector and a time calculation between the two sets of wires.  Could be a light source of sorts as well....

What do I win?

[m25operator]

The sky screens are switches, the 1st is on, the 2nd is off, they react to the light source being broken by something passing over it. If it has a 3rd screen, that is a proof screen, more input = more accuracy. A real high speed stop watch.

[Sponsor]

[MikeBjerum]

The sky screens are switches, the 1st is on, the 2nd is off, they react to the light source being broken by something passing over it. If it has a 3rd screen, that is a proof screen, more input = more accuracy. A real high speed stop watch.

To further that - the wires have noting to do with the timing.  All they do is hold the skyscreens up.

[alfsauve]

Yep, the detectors are photocells in the base of the unit, between the rods.  "sky screens" are just light diffusers.  You don't need them on really overcast days.  Inside, a pair of frosted floodlights do the trick no screens needed.   BUT, they suggest you put in the rods so you have a reference for aiming.

[Timothy]

I kinda figured I wasn't right....

Do I get a ribbon for just playing?

 

[Badgersmilk]

OOOOOOOOOOO K.  THAT makes a lot more sense of what I was told somewhere else then.

They said to ditch the aluminum rods in favor of 1/8" wood dowels from Home Depot because the sun can shine off the aluminum rods and cause false readings or error codes on really sunny days (It's 90+ degrees everyday here!), and if you accidently shoot a dowel rod it'll just shatter.  NOT send your Chrony flying 50 feet through the air.  I thought the guy was just pulling my leg cause I was asking newbie questions about the Chrony.

THANKS!

Tim, It still sounded good though!