Robinhood
07-02-2024, 10:02 PM
I could write for weeks on as you described on Harmonics by Induced Vibration.. Bottomline its a huge topic.
However, I have thought that every person that uses a tuner (barrel tuner) shall have an accelerometer to calibrate the tuner to the load. No different than than using a chronograph. Except IMHO the accelerometer equals velocity and ballistics.
They are easy to use and build just ask the model helicopter folks. In fact a person could easily build one here and adopt it to your tuner. https://blog.ammolytics.com/2019-01-01/project-cheap-rifle-accelerometer.html (https://blog.ammolytics.com/2019-01-01/project-cheap-rifle-accelerometer.html....The) The only thing for a barrel is IMHO you need a 6 axis accelerometer for complete tuning and that would require the addition of magnetometer to the hardware. To mount do what I did in a past life, mount the accelerometer to the barrel with a stiff hot glue for stainless or magnetic for carbon based barrels. If your barrel would have front sight holes that would be ideal.
Just attach, simply shoot and then look at the result. Turn the tuner a few degrees and check the results. Keep doing this until the tuner goes from a large sinusoidal wave to the smallest one possible. Baseline is a static rifle with a round loaded and bolt closed.
Photo below courtesy of AMMOLYTICS https://blog.ammolytics.com/about/
I want to thank you for posting this LDSILLS. This is the most interesting thing I have seen posted in a long time.
You did an excellent job of simplifying the concept. At that frequency I think some really rigid mounting would be required to see your actual amplitude
Mass will reduce the frequency of the vibration and location of that mass will reduce or increase the amplitude.
I agree with Charlie on the switch barrel concept on being difficult to repeat harmonics.
Great stuff.
However, I have thought that every person that uses a tuner (barrel tuner) shall have an accelerometer to calibrate the tuner to the load. No different than than using a chronograph. Except IMHO the accelerometer equals velocity and ballistics.
They are easy to use and build just ask the model helicopter folks. In fact a person could easily build one here and adopt it to your tuner. https://blog.ammolytics.com/2019-01-01/project-cheap-rifle-accelerometer.html (https://blog.ammolytics.com/2019-01-01/project-cheap-rifle-accelerometer.html....The) The only thing for a barrel is IMHO you need a 6 axis accelerometer for complete tuning and that would require the addition of magnetometer to the hardware. To mount do what I did in a past life, mount the accelerometer to the barrel with a stiff hot glue for stainless or magnetic for carbon based barrels. If your barrel would have front sight holes that would be ideal.
Just attach, simply shoot and then look at the result. Turn the tuner a few degrees and check the results. Keep doing this until the tuner goes from a large sinusoidal wave to the smallest one possible. Baseline is a static rifle with a round loaded and bolt closed.
Photo below courtesy of AMMOLYTICS https://blog.ammolytics.com/about/
I want to thank you for posting this LDSILLS. This is the most interesting thing I have seen posted in a long time.
You did an excellent job of simplifying the concept. At that frequency I think some really rigid mounting would be required to see your actual amplitude
Mass will reduce the frequency of the vibration and location of that mass will reduce or increase the amplitude.
I agree with Charlie on the switch barrel concept on being difficult to repeat harmonics.
Great stuff.