Hi Folks!
All this discussion about Rohn 25 and 45 has brought back a question that I
haven't considered in a while...
My Rohn 25 tower is 45ft above the required .8 cu yard block of concrete and
is bracketed in two points as specified in the Rohn literature. Now the
base of my tower is a ten foot section that goes four feet into the block
and 2 inch gravel for drainage, could I cut off the tower section and weld a
Rohn 45 base plate to it and then go up a little higher for the same load as
is on the Rohn 25 now?
Is there some other way to work an upgrade such as drilling and epoxying in
new anchors into the existing block?
73,
Gordon Beattie, W2TTT
201.314.6964
w2ttt@att.net
w2ttt@arrl.net
w2ttt@att.com
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of J. Gordon Beattie,
Jr., W2TTT
Sent: Saturday, 15 April, 2006 16:38
To: 'K8RI on Tower talk'; towertalk@contesting.com
Subject: Re: [TowerTalk] rotor placement
Hi folks,
Heck, I'm a big guy and I am comfortable on a Rohn 25 section!
Sure a 45 section would be nicer, but I can function just fine in my boots
on the 25!
:-)
73,
Gordon Beattie, W2TTT
201.314.6964
w2ttt@att.net
w2ttt@arrl.net
w2ttt@att.com
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of K8RI on Tower talk
Sent: Saturday, 15 April, 2006 16:28
To: towertalk@contesting.com
Subject: Re: [TowerTalk] rotor placement
> Greetings,
>
> Let me chime in with my experiences. If you already have a tower up,
> retrofitting to a bottom rotor will be a major undertaking. Building up
> the tower and mast at the same time is far easier than trying to thread
> masting through an existing tower and radial bearings. Consider also your
> method of joining mast sections. A solid splice will encourage splitting
> from ice. My biggest complaint is the lack of footholds on a Rohn 25 sized
> tower. You WILL have to climb the tower and with only the ability to get
> your toes over each rung of the z-brazing, you will quickly tire. I'm not
> sure what's worse to climb, an HDBX style tower or a Rohn 25 with a bottom
> mounted rotor.
It's not bad on a 45G (My feet don't even touch the mast), but I'd hate to
be doing it on a 25G. Otherwise find a climber with small feet.
Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2
www.rogerhalstead.com
>
> gl,
> Jim W5QM
> _______________________________________________
>
>
>
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>
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