[TowerTalk] Rohn 55 thimbles and turnbuckles

Keith Dutson kdutson at sbcglobal.net
Wed Aug 30 21:16:55 EDT 2006

Clamp one side of the thimble in a bench vise.  Clamp the other side with a
large Crescent wrench.  Bend the thimble sideways just enough to get the
turnbuckle on.  Bend back straight.  Remove from vise.

73, Keith NM5G

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Dick Green WC1M
Sent: Wednesday, August 30, 2006 6:47 PM
To: Tower
Subject: [TowerTalk] Rohn 55 thimbles and turnbuckles

Reviewing the Rohn parts list for a 110’ 55G tower @90-100MPH, I decided to
go with ¼” EHS for all three levels (actually, 6700lb Phillystran with ¼”
EHS leaders. Following the parts list, I ordered 3/8” heavy-duty thimbles
(3/8THH) and ½”x12” eye-jaw turnbuckles (1/2TBE&J). Rohn specifies that the
thimble should be one size larger than the guy diameter. The parts have
arrived, and I’m perplexed to find that the 3/8” thimbles don’t fit inside
the eye part of the turnbuckles. I might be able to make them  fit by
flattening the edges of the thimble a bit (sandwiching it between a piece of
two pieces of flat steel and hammering the flare out of the edges), but
before I try that, I’d like opinions on this. I can’t be the first person
who has run into this. It looks like a shackle would work, but Rohn doesn’t
specify them for 55G towers. Comments?


73, Dick WC1M



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