Gary,
Which make/model cam followers are on the K0XG rings?
I have McGill CCFH 1 1/2 SB on my rings.
Rich - N5ZC
On 2/27/2017 3:02 PM, StellarCAT wrote:
Hey Bill,
Well...... I can tell you a long story of woe with my K0XG system ....
getting support is near impossible, actually was until I needed to
replace ALL the cam followers on the used system I bought. They were
ALL sticking to one degree or another a good share totally jammed. I
did get replaced by K0XG (who replied then). Prior to that emails and
vmails went unanswered. I was told by several that "I've never heard
of that happening before" ... and yet I had all 18 of mine (had
another ring - it too had jammed ones, making 24) ... and now I guess
you're only the second person to experience this (?!).
I'd replace them. For $25 a piece I don't think its worth the risk.
The design of this system is so unlike the RTS system. I don't know of
any good way to replace a bearing if it goes in situ. Unlike the RTS
system where ALL bearings including the major one are replaceable. The
only plus it has over the RTS is the ability to mount it anywhere but
if I had it to do over again and had seen what I've seen I'd have gone
the other way. I know the 'slots' that are there for adjustment, which
make zero sense since they are for rings that are already designed
(the only explanation being they're non-concentric and/or circular)
made it darn near impossible to get 2 rings together and even now is
it turns a slight bit tight at points in rotation.
Also note if you haven't already the whole structure is turned through
3 - 1/2" bolts that are exposed for over 7"! I replaced those that it
came with and bought grade 8 bolts for these.
write to me direct if you have any other questions I might be able to
help with.
Gary
K9RX
-----Original Message----- From: Richard Thorne
Sent: Monday, February 27, 2017 2:56 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] K0XG ROTATION SYSTEM ADVIC E
Bill,
I purchased and refurbished a used rotating tower a year and a half ago.
For what ever reason I ended up having a few bearings stick (and they
were new) a few months after installation. I realized I had a problem
when the guy wires were bouncing around. I determined that a couple of
the bearings were sticking. I replaced them with free wheeling
bearings, problem solved.
I purchased 18 bearings (I have 3 sets of rings) on ebay so I didn't
have any recourse but to replace the 2 bad bearings. I purchased the
replacements and a couple spares from a local bearing company.
Mine is an original Dick Weber design which uses 6 cam followers per
ring set, 3 on each ring.
I would suggest replacing them before they go up it's a lot easier on
the ground, hi hi.
Rich - N5ZC
On 2/27/2017 1:24 PM, Bill via TowerTalk wrote:
About a year ago I bought a Rohn 55 rotation system from K0XG. After
over a year I finally got granted a permit to put the tower up. The
tower is scheduled to go up in 3 or 4 weeks and I was checking the
rotating rings and was in the process of using the grease gun on the
fittings when I found several of the bearings in the rings were not
rotating like the others. Of the total of 12 bearings, 3 were not
moving as they should. 9 were able to be rotated by hand, but the 3
were tight. I used the grease gun on all the fittings including the
three bulky ones. I am now able to rotate the three by gripping with
pliers with not much effort, but can not do it by hand.
Is this an issue? I called Richard at K0XG systems but have no heard
back from him yet.
The three bearings do not appear to be damaged in any way and look
just like the others that rotate freely.
My thinking on this is it may not be an issue. With 1100 pounds of
torque on each of the guys (5/16 EHS), plus the weight of the tower
and antennas (another 1000 lbs) the sheer weight will "force" the
sticky bearings to rotate.
Has anyone had an issue similar to this? Anybody with advice,
including how difficult is it to replace these bearings, brand, where
to find them etc.?
Thanks in advance for the help, and with a little luck KH7XS should
be back on the air by mid April.
Bill K4XS/KH7XS
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