On 7/23/2010 2:00 PM, Cqtestk4xs@aol.com wrote:
> In a message dated 7/23/2010 3:58:33 PM Greenwich Standard Time,
> firstname.lastname@example.org writes:
> It looks like the phillystran big grips
> only have one set of marks because they are designed to be used with
> thimbles only.
I purchased the ones for Phillystran and they do have two marks.
Guess I better go check the downspouts instead of towertalk as there's
another batch of thunderstorms headed this way. Some spots in the
Chicago had nearly 4" and it's been raining there for 3 hours since
those measurements. We only had an inch and the flood watches in Lower
Michigan stop with the neighboring counties.
All my big antennas are out in the back yard on saw horses except the 3L
40 which is still on the shop apron.
I gotta get the end caps welded on the 2" DOM and painted soon. That and
build a new gin pole out of 2" X 3/16" 6061-T6 I need to be able to
lift the two 24' sections of DOM to go down in the tower.
BTW, I had forgotten the thrust bearings were TB-4's instead of the
TB3. Both TB-4 bearings that were up are shot. Even the bottom on had
the races deepened to the point where there are sharp ridges along the
edges of both races. The bad one has about an 1/8" vertical play while
the bad one has nearly a 1/4" vertical play so you can see what that
load was doing to the bearings.
> It botherd me too until there was a battle between a front end loader and
> my tower. While doing some yard work for me the bucket of the machine
> caught the lowest guy wire running to the 40 ft level of my 200 footer Rohn
> Before I could warn the operator about what was happening the guy wire
> actually broke causing the tower to shake violently and ran away fearing a
> catastrophe. When I came back the tower was still standing. When I checked
> the guy grip at the anchor it was still holding firm, although a couple of
> the EHS strands had "arched" in the grip. The guy grips at the 502s never
> budged. It seems as though lacking the one extra inch did not make a
> difference. YMMV.
> Bill KH7XS
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