Ernie Bass
member
I notice their patent ran out last year. Are they out of business for sure or just down due to the many closing of the Virus?
Copyright © 1997-2019
Copyright © 1997-2019
Don’t think one would come back from even a pistol strike full on.
I have a Competition Electronics ProChrono
It's been shot several times.
Does that still work. I have seen those before in old books and articles but have never seen one person. I love the old tech.Bought this in the late 70’s. Uses the printed screens visible in the photo. The steel mount opens to 24” spacing and mounts to a camera tripod. Reads one digit at a time. Uses big old lantern battery. 6 volts. I hit the mount and screen brackets a few times. View attachment 924014
The box was the brides roller skate box when she was a girl.
Does that still work. I have seen those before in old books and articles but have never seen one person. I love the old tech.
So, I assume the printed screens were printed with some type of conductive ink? Or was it metal foil?Haven’t used it in decades. But it worked fine when I last used it.
I replaced it with a Chrony purchased used from a friend.
It’s old tech. One shot, record the velocity one digit at a time, walk out replace the two screens, repeat.
finally killed my Shooting Chrome Beta after 12 years of frustration, and I'm glad I did. Dam thing never worked right on bright days, always errors or blank screen.
Hardware store or craft store will normally have them.Great idea. Where do you find wood dowels that small diameter? Or do you turn larger ones down?
View attachment 924218 Metal foil on thin paper. 2 1/2 by 5 the actual hit zone was only 2 1/2 square. The screens were spaced either 2 or 4 feet apart. The bullet had to break one of those thin lines of foil to start the count and again on the back screen to stop.
One shot two screens. So a supply of screens were needed.
Of course hitting that small area took some patience and practice.
There was also a design before that, that used 4 foil sheets, two sets of two close together a known distance apart. When the bullet passed through the first set it made contact and started the clock, that stopped with the second set made contact with each other.
The concept worked well enough, one could use the concept to trigger a flash and capture a hammer bending glass on a light bulb, before everyone owned a high speed camera.
View attachment 924399
Wood is recommended. A hit on it reduces the risk of damage to the unit. Hit a stainless rod or the supplied rods and the impact will damage the case as well.If you don’t want wood dowels, hobby lobby has one foot long stainless metal or brass rods that will fit.
Update. I shot mine last week. Only the second time in twenty years, more or less. The scope above the trajectory of the bullet got me. I know better, but I had a fuzzy thought moment.
You will be happy to know it didn't suffer. Died instantly. I got the front cover, the front and rear light sensors and the wiring connecting the rear sensor with the processing unit.
I have another Chrony (Beta, remote controller and read out) but have to replace the dead one with a live one. Always nice to have back up.
Numrich Gun Parts, also in NY, just now resumed operations.