Hi Mike,
Many times I was looking to contact you to talk about vibrations.
I am doing a project to reduce the 2 rev in my ELA, and to learn how to do it.
This is project medium term, because in fact, I am manufacturing a three blades rotor head but will take too much, it will be a for long term project, I don’t like the two blade rotors.
My idea is to test the 3 key factors and measure the influence of each one in the 2 rev. in a graphic manner. It will be a DOE ( design of experiments) exercise.
-soft mast
-undersling height.
-in plane rotor rigidity.
For the soft mast I cut the ELA mast and made a new one. The new mast is connected by silenblocks to the frame. I have two silenblocks types, on set in rubber and one set in aluminum ( no dampening at all).
For the undersling I have a modified head that allow me change the undersling height in steps of 1 mm
To increase the rotor in plane rigidity I will modified again my head to install some extra bracing.
I hope to test and measure the influence of each factor in the 2 rev vibration value.
Also, I want to test the vibration level in the rotor and in the seat.
Once we have all the data I will share the conclusions in the forum.
So this is the reason that I am looking for a good vibration meter device.
Au revoir,
Juan Manuel Arco
I have given up on the RWF and after my visit to Bensen days this year I'm about to give up on the USA gyro community, except for Abid and one or two others it's like being in the dark ages, nobody wants to hear about anything new
Mike