I have owned several Yaesu G-2800 DXA's and none slipped on my 2 1/2" masts
in windy Aruba. I am wondering if you installed the bolt that goes through
the mast per the instructions?
John KK9A
Alan Higbie K0AV wrote:
As the result of an extremely high wind event, I will soon be going up the
tower to loosen the G-2800 mast clamps, realign the mast and then re-tighten
the M8 x 70 bolts.
The Yaesu G-2800 manual says:
"Caution: Do not over-tighten the nuts on the mast clamps.
They should be tightened until the spring washer becomes flat, then
tightened further by 1/2 to one turn maximum."
I am still using the original hardware supplied with the G-2800.
These spring washers have been in service for 5 years - so their
springy-ness may not be the best indicator for torque.
I believe that torque settings depend upon the grade of hardware being used:
e.g. 8.8, 9.8, 10.9 or 12.9 - but I don't know the grade of the stock
hardware.
What its the proper torque setting for these M8 x 70 bolts?
73,
~ Alan Higbie K0AV
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|