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Posted: 2/23/2010 8:01:51 AM EDT
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Alpha, Beta, or Gamma. Have no idea whats, what. What works best where or why. Question ? What works best in a cave with flourescent lighting.
Here's a picture of the cave. 
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Regardless of which unit you choose you may need the indoor lighting set, florescent lights are hell on Chronies.
Indoor light set I have the Gamma Master with the remote head and printer....Very nice unit that will do a lot more then I will ever use it for. |
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Quoted:
Regardless of which unit you choose you may need the indoor lighting set, florescent lights are hell on Chronies. Indoor light set I have the Gamma Master with the remote head and printer....Very nice unit that will do a lot more then I will ever use it for. Any photo detector scheme will have problems with fluorescent lights, even if the lights use s high frequency electronic ballast. Unlike an incandescent filament that does not cool appreciable as the current goes up and down 120 times a second, florescent lights with magnetic ballasts actually flash on and off 120 times a second. Electronic ballasts make them flash faster, but they still flash. A 0.5 inch bullet at 1000 ft/s passes over the 1/8 inch sensor in around 0.00033 seconds. If the bulb is in an off portion of the cycle the sensor may miss it completely. Incandescent bulbs or LEDs fed from a DC supply are 'always on.' |
| Pact makes a good basic and good intermediate chrono. I recently bought the infra red screen set which illuminate and reflect back and work on dark winter days when my old screens would not register. The screens run on 6 volts with a little power converter the plugs into 110. Could be rewired to optionally use 6 volt lantern battery. I just bring an extension cord to the range and find a place to plug in. I like my Pact. BTW, don't store the computer unit with the small 9v battery that powers it hooked up. It seems to draw even when turned off and I went through a lot of 9volts when I started using it. |
| I have a Shooting Chrony Beta Master. I've used it 2x and had it about a month. It seems to be prone to errors which are related to the optics not seeing the bullet or the lighting being off. I never did figure out how to clear an error as the only way I could get it to clear was to shut it off. I used the Crono outside with the diffusers on and it missed about 20% of my rounds. I also found the buttons and menus unfriendly. In this day and age, I feel they should be able to redo the controls to make it more friendly to the consumer. If it was just the controls issue, I'd be happy with it; however the errors are a problem that I was unable to resolve. There has to be something better than this out there... |
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Don't mess around- get the Competition Electronics ProChrono Digital. They recently came out with a new indoor lighting setup that is the schnizzel:
http://media.midwayusa.com/ProductImages/Medium/154951.jpg http://www.competitionelectronics.com/images/lightingsystem/CEI-4100-crop_sm.jpg That's a pair of Infrared LED Arrays- it works GREAT, is light weight, and only requires 24VDC. They mount to the standard diffuser rods. I instantly performed an easy mod and put three 7.2 Lithium batteries inside the Chronograph case, rewired things a bit, and now have a fully portable illuminated setup for indoors. Three extended sessions at the indoor range with no issues whatsoever. |
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Quoted:
Pact makes a good basic and good intermediate chrono. I recently bought the infra red screen set which illuminate and reflect back and work on dark winter days when my old screens would not register. The screens run on 6 volts with a little power converter the plugs into 110. Could be rewired to optionally use 6 volt lantern battery. I just bring an extension cord to the range and find a place to plug in. I like my Pact. BTW, don't store the computer unit with the small 9v battery that powers it hooked up. It seems to draw even when turned off and I went through a lot of 9volts when I started using it. Sir, FWIW I use a PACT Professional XP. The sky screens have an independent power source to illuminate the bullet with infrared light. The range I use has covered firing points which generally obscure ambient light and even on sunny days having an alternate light source is very beneficial. I used a PACT PC2 chronograph for many years and considered the infrared sky screen option when PACT first offered it. When the PC2 gave up I replaced it with the XP and have been quite pleased so far. When you consider which chronograph to buy make sure you consider the fact that shooting the sky screens is not a question of if, rather when. Having cheap and readily available replacement parts will save your day when it happens. JMHO, 7zero1. |
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