Hi,
I work in avionics and deal with vibration related problems. Three
suggestions suggestions wrt to dealing with hardware working loose.
You could keep the plain nut and star washer hardware but use (blue,
as it is removable) locktight on the threads, alternatively replace the
nuts and star washers with fibre lock nuts and flat washers. The
third, and likely most affordable method is to use jam nuts
( ) .There are other ways (pal
nuts but you
may find a good quality fibre lock nut, or nuts to use as jam nuts, in
a local hardware store.
Ron VE8RT
On Sun, 02 Jan 2022 05:10:22 -0800
"Oyster Town (G0IFS) via groups.io"
<nigel_clayton@...> wrote:
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Gazing up at my Wellbrook ALA 1530 loop which has served me well as one of my receive solutions I noticed a slight tilt from the vertical. On further examination I found that the clamps that secure the mounting spigot to the TV type rotator had loosened (even with star washers). In addition the two long screws that secure the amplifier and loop to the mounting flange were also loose. I am reluctant to pull those screws up very tight as they go through the plastic housing and may damage it it some way.
It may be worth checking your own installation, I can only assume vibration from the strong winds here on the Kent coast have caused this problem. I always turn the loop to reduce action of prevailing winds.
--
Ron VE8RT <ve8rt@...>
