Chrono inside a brake combo.

[2aBaC̶a̶]

A pipe dream, I know. How useful would it be to have a chrono built into a brake that wireless transmits to another device. You could essentially have data on every shot for the life of the barrel. Speed up, slow down. All tracked. No more strapping on a magnetospeed or setting up a labradar.

Just shoot.

 

[Huskydriver]

But why tho?

 

[Krob95]

Why not? Why should we be limited to either a labradar or magneto speed? Or a hand full of cheaper options.

 

[Huskydriver]

Why not? Why should we be limited to either a labradar or magneto speed? Or a hand full of cheaper options.

Why do you need every velocity reading?

 

[Krob95]

Who said you have to take a velocity reading for every shot? I don’t see it as you have to chrono it every round, maybe it’s something as simple as the Area 419 Hellfire adapter system where it’s two seconds on, two seconds off, switch to your can, go on about your day.

On the other hand, some guys like to chrono every round they possibly can though and this would be a solution to that when shooting a match or something else when running a chrono would not be feasible. This would be ideal vs trying to setup a labradar that decides it doesn’t want to work halfway through a string or the POI shift for the magneto speed.

Many uncivilized people run brakes, this would give them maybe a better option to chrono their loads. I don’t know. Just throwing out scenarios?

 

[Steel head]

Considering the pressures it would be difficult and/or super expensive to pull off.

 

[2aBaC̶a̶]

But why tho?

Because labradar are bulky, finicky, and awkward to setup and a magneto changes poi and you cant just leave it on.

I dont know, maybe the same reasons anyone uses a chrono? why not? For science? For people who like to always know whats going on? People who are constantly testing new things? the incessant chrono users?

Just a thought.

 

[rustyinbend]

... and it would also make latte's and give blowjobs ...
Wouldn't that be great too. LOL

 

[brianf]

Why do you need every velocity reading?

If you chrono every shot and actually call your shots truthfully you can see if you hit low because you pulled the shot or because the velocity was slower.

 

[2aBaC̶a̶]

Considering the pressures it would be difficult and/or super expensive to pull off.

I know jack about how a chrono works other than magnets. Only becaue shit is always stuck to my magnetospeed.

I also know where there's a will, theres a way.

 

[Yondering]

I know jack about how a chrono works other than magnets. Only becaue shit is always stuck to my magnetospeed.

I also know where there's a will, theres a way.

I like the idea, and bet it will happen sooner or later.

Steel head’s comment isn’t the problem though; handling the pressures involved is easy and not an expensive thing. It can be done with a magneto-speed type setup built into the brake.

The tricky part is building an accurate chrono in the short length length of a brake. It’s possible, just more expensive with current tech; most chronographs are long because it doesn’t require timing of the sensors to be as precise, and precision is expensive.

 

[Huskydriver]

If you chrono every shot and actually call your shots truthfully you can see if you hit low because you pulled the shot or because the velocity was slower.

Define a little slower 25 fps? Run the numbers between at 1k yards for 25fps shift with the bullet of your choice and tell me if you still missed the target.....

 

[Huskydriver]

Because labradar are bulky, finicky, and awkward to setup and a magneto changes poi and you cant just leave it on.

I dont know, maybe the same reasons anyone uses a chrono? why not? For science? For people who like to always know whats going on? People who are constantly testing new things? the incessant chrono users?

Just a thought.

I only use a chrono to find the top end of my pressure curve with initial load dev....

After that, I let the actual drop to hit a X range tell me what the speed is through my kestral.

 

[6.5SH]

Given stuff like this:

Reactor – Firearms Data Analysis

Reactor develops scientific analysis products for the firearms space.

reactorusa.com

I think it will eventually happen. But it will need to be very rugged to live on the end of the barrel. I'd think the sensitivity of the sensors and processing power would need a generational increase to be able to measure velocity over a much shorter distance than what the Magnetospeed offers.

 

[308pirate]

I can see a brake being energized to serve as an induction sensor, which is what a Magnetospeed is anyway. Hmmmm......

 

[brianf]

Define a little slower 25 fps? Run the numbers between at 1k yards for 25fps shift with the bullet of your choice and tell me if you still missed the target.....

100% but shooting steel is not the same as shooting X rings

 

[THEIS]

Hi,

It could be done the "easy" way with just 2 lasers.
1 laser activates a timer
1 laser deactivates timer
With known distance between the lasers you get the speed.

Sincerely,
Theis

 

[Huskydriver]

100% but shooting steel is not the same as shooting X rings

Did that drop you out of the xring with any caliber other than 308 at 1k lol?

Also since electronic targets are all the rage in Fclass now, you get your speed at the target on your screen for every shot anyway

 

[brianf]

how about waterline on steel at 1500 lol

 

[308pirate]

Hi,

It could be done the "easy" way with just 2 lasers.
1 laser activates a timer
1 laser deactivates timer
With known distance between the lasers you get the speed.

Sincerely,
Theis

I'm calling Keyence tomorrow. LOL

 

[Huskydriver]

how about waterline on steel at 1500 lol

How big is this steel ?

 

[Mr.BR]

Autocannon have MV measuring and now also fuse programming . It works like Magnetsopeed but the distance between sensors maters, muzzle brakes are short to space the sensors ,but it would cool if someone manages to make it work. Would not be surprised to see this on big .50cal in near future

Such sensors have no issues with surviving the blast and processing here is fast enough to measure MV and time the fuse in 50mm from the sensor to fuse setting coil. The problem is in making it accurate to cca 0.1-0.2% , while making it affordable.

 

[woogie_man]

A pipe dream, I know. How useful would it be to have a chrono built into a brake that wireless transmits to another device. You could essentially have data on every shot for the life of the barrel. Speed up, slow down. All tracked. No more strapping on a magnetospeed or setting up a labradar.

Just shoot.

Look around for the Daystate Air wolf. This is an airgun that has a chrograph inside the suppressor. Wouldnt be hard to do, just need to make things strong enough to handle the pressures.

 

[A.Huggy]

Magnetospeed + JB Weld?

Seriously though, I bet it's technically possible. Magnetospeed has done it so inexpensively on the large scale. It's just a matter of taking that same measurement over a shorter distance. My napkin math says a 3 inch brake would require a 5 Mhz sample rate if you want 20 samples between sensors for a 3000fps projectile. There's a lot of microcontrollers that can do that.

 

[Mr.BR]

Like Woogie man mentioned Daystate Delta Wolf has this optical Chrono built in the barrel shroud .

It might be easier to make an rail-mounted doppler radar than MV measuring brake, you can get small enough units that can range a couple of meters far.

Air rifle crowd have some ,small and cheap doppler chronos , am sure these could be made even smaller.

FX Radar = 72x70x42mm (2.75” x 2.75” x 1.7”) but at present limited to 394m/s (1300fps)

 

[Tchitcherine]

Hi,

It could be done the "easy" way with just 2 lasers.
1 laser activates a timer
1 laser deactivates timer
With known distance between the lasers you get the speed.

Sincerely,
Theis

Both sides (tx & rx) of the laser gates would need protection from fire & crud. Also both flame and filth might obstruct transmission/visibility?

As for the the "why", I seem to recall David Tubb at KO2M a couple years back measuring MV on every shot, for exactly reason posted by @brianf.

I think these kinds of ideas are good because, even if they don't pan out, they sometimes lead to better ideas. A lot of cool shit we have now started out with some dudes asking what if, and how.

 

[woogie_man]

I have one of the fx chronos and they are slick. Basically a smaller version of the magneto speed. Works great and simple to use. Though the speed limitations currently wouldn't work on anything over a 22lr subsonic rounds

 

[Mr.BR]

I have one of the fx chronos and they are slick. Basically a smaller version of the magneto speed. Works great and simple to use. Though the speed limitations currently wouldn't work on anything over a 22lr subsonic rounds

From what i can see much of the volume is for the 3 AAA batteries , and i am quite certain that speed limitation is to a large degree down to the target market(no need for more) and low radar reflection from small lead pellets (labradar is not measuring these far either ,according to specs up to 30ft)

In my opinion, the issue is not the doppler unit but triggering fast enough for a short-range doppler to measure, with Labradar as its long-range masuring it doesn't really matter if it only first picks up the bullet 10-15m down range , with the small shorter range doppler unit it has to measure the pellet much closer hence the velocity limitation.
Maybe recoil triggered unit would be fast enough vs noise triggered unit to make up for shorter doppler range?

 

[woogie_man]

Agreed. I am planning on testing the thing out with some subs through the 22lr. The limit on them is something like 1200fps or something like that. I enjoy mine and haven't regretted buying one. Though would be nice to have one similar that could work for high powered rifles.

These FX units are nice to toss on the rifle and take a few shots in the filed before hunting. Just to make sure things are ok and functioning as they should.

 

[2aBaC̶a̶]

Autocannon have MV measuring and now also fuse programming . It works like Magnetsopeed but the distance between sensors maters, muzzle brakes are short to space the sensors ,but it would cool if someone manages to make it work. Would not be surprised to see this on big .50cal in near future

Such sensors have no issues with surviving the blast and processing here is fast enough to measure MV and time the fuse in 50mm from the sensor to fuse setting coil. The problem is in making it accurate to cca 0.1-0.2% , while making it affordable.

Thats kinda what I was thinking. Fit some ringed sensors in the brake somewhere.

Then mount some electronics on it like that Daystat delta wolf.