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New "true" time of flight device. What do you all think?

 
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Old 04-09-2009, 04:52 PM
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New "true" time of flight device. What do you all think?

To all,

I am currently working on a device that will give a shooter the real time of flight of his bullets. This device will NOT calculate TOF rather it gives real time results. It will require a shooter to take a laptop to the range. It would also be able to be used from 0-1000 yards as well as 0-100 yards, 100-200 yards, 200-300 yards, 300-400 yards ect... for modeling purposes.

This device will NOT calculate BC's ect....All it will do is give you the real TOF so that you can decide what to do with the information. You would have to also be shooting over a chrony to get an accurate velocity to go with that TOF and you would need a pocket weather station. Later in the advanced stages, there may be velocity and atmosheric data included in the software and device, but for now it is just TOF.

The catch is that it is fairly expensive to manufacture. It will cost me nearly 1K to put a unit together for up to 1000 yards. A bit less for less yardage and a bit more for more yardage.

Now my question to all of you is (and I am sure only a few of you would be interested in owning a unit) how many of you would be interested in renting a unit? I would have to work out the details on how to secure a deposit and legnth of time used etc.....

It would be an economical, accurate and simple way to determine an accurate BC for your bullets.

Oehler no longer produces the 43 which was based on a similar principal to what I am cooking up. They stated to me that the cost and time wasnt worth the amount of interest. My thought is that if someone offered a unit they can rent at a reasonable rate for a reasonable amount of time, there may be more interest.

What do you think.

Any opinions here are welcome.
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Old 04-09-2009, 05:49 PM
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Re: New "true" time of flight device. What do you all think?

Can you make an acustical target that will attach to the Oelher 43? Can you make this device attach to the Oelher 43?

I am interested in something like that
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Old 04-09-2009, 06:43 PM
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Re: New "true" time of flight device. What do you all think?

I'm interested.


Is your method similar to this: An Acoustic Method for Determining Ballistic Coefficients




Paul
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Old 04-09-2009, 06:57 PM
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Re: New "true" time of flight device. What do you all think?

Quote:
Originally Posted by jwp475 View Post
Can you make an acustical target that will attach to the Oelher 43? Can you make this device attach to the Oelher 43?

I am interested in something like that

It wouldnt interface with the 43.
__________________
Long range shooting is a process that ends with a result. Once you start to focus on the result (where the shot goes, how big the group is, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.
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Old 04-09-2009, 07:01 PM
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Re: New "true" time of flight device. What do you all think?

Quote:
Originally Posted by pstimac View Post
I'm interested.
Is your method similar to this: An Acoustic Method for Determining Ballistic Coefficients
Thank you for the link.

Yes it would be very similar to that. Minus the I beams. this method would either use noise as in the super sonic crack to stop the clock or it would use a pressure activated switch upon impacting a large target. The activation switch would be an acoustic device within 10' of the muzzle. The math within the program would correct for any distance figures.
__________________
Long range shooting is a process that ends with a result. Once you start to focus on the result (where the shot goes, how big the group is, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.
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Old 04-09-2009, 07:11 PM
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Re: New "true" time of flight device. What do you all think?

After re-reading the link, I suspect that the device I am working on would offer a much smaller margin of error. This is due to the fact that there will be an actual cable between the Laptop and the noise sensors or pressure switch. It is easy to calculate the time it takes for the signal to reach the PC to stop the clock, which isnt much to begin with. Much easier than trying to factor the current speed of sound.
__________________
Long range shooting is a process that ends with a result. Once you start to focus on the result (where the shot goes, how big the group is, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.
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  #7  
Old 04-09-2009, 07:30 PM
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Re: New "true" time of flight device. What do you all think?

Quote:
Originally Posted by Michael Eichele View Post
It wouldnt interface with the 43.
Could you make one that would?
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