Extra Davit Support

My davits which hold my dingy up are well built and swivel off from two poles at the back of the boat. Even with the gusset on the davit, I feel there are times where perhaps I overload the davits. Quite often I throw extra stuff into the dingy once secured up, as a means of quick storage. Once, I had one of the davits straightened as it had bent a few degrees, near where it joins the vertical post/pole
So I decided to add some extra support to help with the load.
The idea was to use two bolt hose clamps for the poles. From these clamps, by which a cable is secured around the bolt on the clamp, and then run with a tensioner (turnbuckle) out to the end of the davit.

I purchased the cable, swages, turnbuckles, and hose clamps, and cable thimbles.
Assembly only took 2 hours. The swageing was made easy with the big heavy swageing tool that looks like bolt cutters. Turnbuckles were assembled with the wire to give tension  to the support wire once installed.
Finally the copper swages were rapped in a self amalgamating  tape.

To the left is one of the cables installed. The hose clamp on the vertical pole can hardly be seen, but the top piece of wire goes around the bolt of the hose clamp as it's mounting point.
The whole job took less than 2 hours, and I'm confident it will give the extra support I desire.

Tale of Two Tapes

The two masking tapes shown vary quite a lot in both price and quality.
The upper most tape was from a local chandler for $6 which I had to buy on a weekend when I had run out of the other.
The lower tape was more than $16.

Which would you buy?

The top one, even while applying the tape, I could tell was going to leave "furry" edges on my paint line.
The bottom one is a 3M product #2093EL called blue scotch, and has an "Edge Lock", which leaves beautiful fine lines after the removal. I also noticed that the tape could also tolerate some sanding up to, and on the tape, without affecting the edge.
I did one coat with the cheaper tape  and then removed and my suspicions about a furry line were confirmed. I applied the better tape about 1/16 inch further out and re-sanded before painting. A rescue of a paint job that I'm sure I would have been disappointed with had I left the cheap masking tape on. What annoys me even more, is the same tape in in the USA is $8.99 retail. Why should it be $16 here in Australia (with the stronger $)? But, I always knew Australia charged like wounded bulls for everything. Unfortunately, a necessary stop off on an around the world journey.

Install of Fuel Filter Monitor

A while ago, I wrote here about a fuel filter monitor that was both cheap and easy to install. I have gone ahead and purchased one and here are some pictures of my install.

The picture shows the indicator installed on the outlet side of the Racor filter. It is installed upside down because there is another Racor filter above for the Gen set and has to be installed this way because there is no room for it the other way around. It still functions the same. I had to purchase the base "T" in addition to the unit and an adapter for the thread of the unit to fit NPT fittings.
Once this has proven itself, then I will purchase another for the Gen set filter.

New Holding Tank Vent Outlet

On my forward holding tank, the vent line comes out the side of the tank, and because of the small size (<1/4inch) of  the screw in fitting, occassionally becomes blocked. In clearing that blockage last year, I noticed the thread for the elbow, that screws into the tank was stripped. At the time, I secured it back into the tank with my favorite 3M 4200.
This year was the time, to replace that fitting. It was very difficult to get at, being close to the side of the hull, and I didn't want to take the whole tank out to replace it. So I came up with this idea.

I used a plastic fuel tank through hull vent that comes in two pieces. I mounted this on a 1/2 inch plywood disc, coated with 3-4 coats of epoxy. The vent has a tube within a tube and when mounted with the hose tail pointing down , gives an extra protection from water ingress (like a trap). The curved "outer" vent entry has a stainless mesh which I removed. These features, when applied to the holding tank application, should prevent fluid escaping out the vent line.

Diassembled vent and mounting disk.

The disk was located on the top of the tank and the process for attaching with epoxy glue was the same as in this blog here.  Essentially I drilled a hole big enough for the vent intake; sanded the tank and mounting disk; and applied a epoxy mixed with a silica "glue" as a paste between both parts and allowed it to set up. The vent intake was a firm fit in the mounting plate and allowed for the removal (unscrews) of the bigger vent "trap" with hose tail; and also allowed for orientation by turning the vent intake to accommodate.

Finish product

The photo to the right shows the finished product, albeit that I don't have the right type of hose. I have 5/8inch sanitation hose coming from the USA. It's not a size readily available here.
The old vent hole was closed off using a plug they use on hydraulic items. I had one come off a new transmission cooler that was the right size. And of course to keep it in there, I used my favorite product, 3M 4200. One day the tank may be removed and that will be the time to remove the old brass fitting epoxied into the tank.

You might notice the inlet to the holding tank is also on the side, (under the old vent line). I don't under stand why they were built that way. Both the vent and the inlet should be on the highest point of the tank. Next year, I might move the inlet to the top of the tank. And that will give me a couple of more flushes. Doesn't a flush beat a full house?

Holding Tank Level Monitor

 I wrote previously about Gobius Tank Level monitoring. You can review that blog here.
On my forward holding tank, there is no way to easily place an inspection hatch for level monitoring (as per my previous blog). That is because to get at the tank, I have to remove a heavy mattress and covering board to see the tank. We also use the forward berth a lot, to store our extra equipment and sometimes supplies. So it can be a real hassle getting to the forward tank.
We use to empty the forward tank whenever we emptied the aft tank; but that was a
waste of tank treatment if the tank was say only 1/4 full.
So for me the solution lay with this new tank monitor device. You can see in the three photo's, the installation of the three main components of the device. The level indicator was placed just over the head electrical switch. The "computer" was placed on the side of a locker, next to the holding tank and the sender unit on the side of the tank as indicated in their web site tank calculator. Everything was easy except the sender unit. I followed their direction to the letter, but it would not stick. Sanded level, made sure tank surface was above 20 degrees C, and wiped surface prior with their special towel. Didn't stick! They supplied a spare sticky patch with the kit, so I tried the spare. Still no stick! So I wrote to their support email and two days later got a reply. The insinuation was that I had not followed with their directions

but they would post a new sticky patch out to me. Well, that wasn't going to help much, being on a boat, "cruising the world". So I took matters into my own hand. This they didn't recommend, but I did it anyway. I sanded the sticky patch that wouldn't stick so that it had a rough surface. Next I applied a very thin layer of 3M 4200 and applied the sender unit to the tank. I had duct tape ready to tape this unit to the tank until the 4200 set up. Next morning, the sender unit was attached "rock solid" to the tank. I proceeded to change the default settings and calibrate the unit as per their directions. And the unit works great. I may at a later date put a buzzer in the analog circuit which is detailed in their instructions. In the mean time, the 3/4 warning light comes on when the tank is 3/4 full. You can add extra sender units to have a 1/4 and 1/2 level light as well, but I'm very happy with this at the moment.