Tuesday, August 16, 2022

Completing the VHF Antenna Cable install

 Back up the mast to complete the install of the VHF Antenna and gWind Transducer cables.


Now that the VHF has tested out ok and the gWind transducer is providing wind data to our Navigation System, it's time to complete the work on the Masthead.

So it was back up the mast today. No rain expected ( ok, none after 10am) but plenty of Sunshine. Steffi Shiffer came down to the boat to collect the left over material from the chair cushions and backs that I made for her last week. Peggy & Steffi were chin wagging while I prepped the gear for climbing the mast.
Today's tools included the Heat Gun, 100' Extension Cable, Pliers, Snips and Knife plus the Safety Harness and Bosuns Chair along with the two ATN Ascenders. Materials required were Heat Shrink tubing, Dielectric Grease, Butyl Tape, and Zip ties. Add a bottle of water for refreshment. I was also going to replace the blocks for the Lazy Jack system and apply some Rescue Tape to the end of the starboard side of the spreader, I got the port side of the spreader done last week.

It's always a struggle to don the Safety Harness, my solution is to sort it out while it's laying on the dock and then pick it up with one of the shoulder straps in each hand and lift it up over one arm and then pass the other arm under the second shoulder strap. Then connect the two parts of the chest straps and finally reach down and pull each of the leg straps up between my legs and connect them to the two side clips.

With all of the tools and materials sitting on the top of the inverted dinghy on the foredeck, I sit in the bosun's chair and strap into that. I use a additional strap to pull my butt into the back of the chair so that the chair does not slip bac when I stand in the leg straps stirrups. 

Next I attach the two ascenders to the Halyard that I have tensioned ready for climbing, I'll have to get better at tensioning that line. When I put my weight on the ascenders, it stretches and thus loosens.

Now fully dressed ( where are the pics Peggy? ) I load up the tool bags on each side of the bosun's chair. Clipping the Main Halyard to the end of the Safety Harness shock cord, Peggy takes up the slack and I hook into the Ascenders, one attaches to the Bosun's Chair the other to the Leg Straps with my feet in the Stirrups. Finally ready to climb. 

Peggy takes up the slack as I ascend the mast.

When I get to the Spreaders, Peggy secures the safety line and I reach out to the tip of the spreader. Ok, I can reach it! All I need is my knife and the Rescue tape they are in my tool bags. I lean out with the tape in hand and quickly wraps the tip of the spreader with the tape, cut it with the knife and stretch and wrap the last few inches of the tape around the spreader. Job 1 Done.

Ok, moving up. Peggy takes up the slack and I climb up a couple of feet to the Lazy Jack blocks on each side of the mast just above the Spreaders. The Starboard block had failed, the 'plastic' sides had cracked and allow the Line to ride up over the sheave and then jamb between the sheave and the metal sides of the block. I quickly installed the new all Stainless steel sided blocks, running the new lazy jack lines would be a job for on the way down.

Again, Moving up. Peggy takes up the slack as I climb the remaining distance to the top of our mast which is about 51 feet above the water line. Took a break halfway there for a refreshing drink of water. 

Once at the top, I got to work. First was to put dielectric grease on the VHF Antenna Connection to the Antenna Cable. I slipped a piece of Heat Shrink over and past the end of the cable, applied the grease to the thread of the Antenna Connection, completed the connection and tightened it using the pliers, then slid the Heat Shrink over the connecting ferrule. Calling down to Peggy, she attached the power cord and the Heat Gun up to via the Messenger line ( Spinnaker Halyard) and I sealed the Antenna Connection using the heat gun, that should keep it in good condition for a few years.  

Next, I added strain relief to the gWind Transducer cable with several Zip Ties. I should have put an extra piece of heat shrink over the VHF Antenna cable before the piece I had put on to seal the antenna to cable connection, had I done so, it would have been easy to run it down the cable just to the point beyond where the Antenna Cable passes through the hole in the Masthead. I didn't ! So I sliced a piece of heat shrink lengthwise and wrapped around the cable, sliding it down into the hole where the cable passed into the masthead. I secured it with a couple of zip ties and then applied some heat with the heat gun, just enough to melt the glue. 

Last job was to seal the holes around all of the cables where they pass into the Masthead. I rolled up some Butyl tape into a thin rope and used  that to seal the holes around the cables. 

All done, just needed to take some pics.


The old wind transducer base is still on the mast head. It's through bolted, so no way to get it off without having the nut end drop inside the mast and it would be just my luck that that nut would jamb into some line and cause a problem.

Time to go back down to the Lazy Jack Blocks.

Peggy eased the Safety line as I climbed down using the Ascenders until I was level with the blocks.

Using the messenger line, Peggy passed up a piece of line that was precut ( used as a messenger line when I pulled the old wires out of the top of the mast) and the end of the line for the 2nd lazy jack.

Turns out the old messenger line was too short, so I had Peggy tie a knot in the other line from the drum of line that was on the deck, then I pulled up that line until I got to the knot. Cutting the line below the knot, I pulled up on the other line as Peggy unwound more off o the drum. With enough line fed through the new blocks, I had Peggy tie another knot in the line by the drum.



All done, time to climb down the mast. The temp (according to my cell phone ) was over 100ยบ F up at the masthead, it felt like it. I was ready for a break.

We had lunch in the Air Conditioning of the Cabin. Back to it, tide up all of the tools and the gear and lines.

Tools - Good
Gear - Good
The Lazy jack lines - Good - well half were good, the Stbd side lines were secure but  the port side lines decided to run through the blocks - how nice and easy it ran! 

That means I have to go up the mast again on Friday to fix the lazy jack lines.   Grrr. At least it will keep me fit.

Getting better at climbing the mast, it went a whole lot easier today.  Both new Lazy Jack lines are not run through the new blocks on the mast.

I can cross this job off the list. The Service history log is updated.

There are no projects that would stop us going sailing, plenty of projects still on the list, but none that impact our sailing options. So we're planning.

See you on the water.

Paul

1 comment:

  1. Hi Paul. How much wire (length) did you need? What brand, type and where dis you get it?

    ReplyDelete

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