Try climbing 75 feet of Rohn 6, then 10 feet up a fixed aluminum
mast that is guyed 20 feet above the tower. The tower flexes and
twists, the mast flexes. Fortunately I will be doing that for the
last time in a few weeks when the whole thing comes down to be
replaced by 100+ feet of Rohn 25.
Paul N1BUG
On 07/01/2017 08:05 PM, Hans Hammarquist via TowerTalk wrote:
I was told that aluminum towers are more springy than steel towers. Mine is
an aluminum, guyed though. I still experience the vibration when I am in
between the ground and the guy point. Was very scary the first time I
climbed it but am use to it now.
I believe the "Q" value of aluminum is higher than steel. Therefore the
aluminum tower vibrate more than steel towers when you climb them.
Any takers?
Hans N2JFS
In a message dated 7/1/2017 1:37:30 P.M. Eastern Daylight Time,
john@kk9a.com writes:
My 60' Universal Aluminum tower used to move when I climbed it. It seemed
like a lot of movement but as Jim said it probably was not. I sort of got
use to the movement and never had an issue.
John KK9A
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