December 31, 2010

This is last post of 2o1o, and is approximately the one year mark since I've had Circadian. My next post (the first for 2011) will include a summary of what I've accomplished so far.

On Thursday, I managed to squeeze a day out of the holiday visits to install one of the new ABI ports. It was clear as I worked through the problems of its installation that ABI had intended to simply screw the port into the cabin side from the inside; convenient and easy, but definitely not engineered for the strength to sustain the impact of a large wave or knockdown. In order to do a proper through-bolt installation, I had to drill the bolt holes at the bottom at an angle to allow room for the nuts to clear the angled flange.

I had only enough time to put the butyl tape around the flange as I did for the Ta Chiao ports (see November 1 post) and tighten down the bolts. Fortunately, with the larger bolts (1/4 inch), I could compress the butyl enough that the clamps were only necessary to hold the port in place while I drilled the bolt holes and inserted the bolts. If you look carefully at the interior photo, you can see where the butyl has self-welded and squeezed out around the inside mounting flange. You can also see that the port looks like it is mounted high inside; however, that is where it must be for proper exterior placement.
When the next dry work day comes up, I'll insert more butyl into the gap between the port and the cabin side and add the redundant 3M 4000 sealant.

Best wishes for a wonderful new year!

December 20. 2010

It was a very wet and windy week at Hidden Harbor, but only one boat sank. And that was entirely the owner's fault. He'd disconnected the exhaust hoses from the holes in the transom that were virtually at the waterline and didn't plug them. (No seacocks on the thru-hulls apparently.) When the wind blew off the tarp covering the large open cockpit and the rain poured down, the pumps could no longer keep up and you can guess the rest. And even though he lived in one of the rental units on the property not more than 100 yards from his boat, he didn't bother to check on it during the storms.

Of course a week of rain had a lot of less-serious consequences. The river was pretty high for one thing. It also provided a very serious test of the watertight integrity of my hatches and ports.


While at home during the week of rain, I got the brass ship's clock running again, and once I knew it still worked, polished up and lacquered the brass case that had become blotched with tarnish. I also put another coat or two of varnish on the remaining extension leaf for the saloon table. I did a further test on the non-op old GPS unit and determined that it wasn't just the power cord: the unit did not power up. The verdict: terminal.

I spent the bulk of Saturday doing some regrettable, but necessary, household repairs and chores. I did manage to rub out the finish on the remaining table leaf so I could bring it to Circadian and finish off that project. I also cut some moulding to replace pieces of the trim missing from some of the head locker doors.

My mission at Hidden Harbor on Sunday included cleaning up the mess I had left the week before, installing the new oil pressure sender in the hope it would solve my instrumentation problem, mounting the remaining table leaf and assessing the effectiveness of all my previous efforts at staunching cabin and deck leaks.

I accomplished all aspects of the mission, but it was not all good news. The doghouse skylight still leaked...even worse if anything, and the teak hatches had minor slow leaks. But with all the water drenching everything, it was easier to diagnose. I believe that by tightening down the skylight bolts a couple of weeks back, the frame was forced into more of a curve to follow the contour of the doghouse roof, and as a consequence, the seal between the plexiglass and the frame was broken. As for the teak hatches, it became clear that although the original seal between the plexiglass and the teak frame looked intact, it was imperfect. I was also able to easily solve the mystery of how water was finding its way into the engine room from around the cockpit lockers. The short answer is truly stupid design and/or modifications. More details when I tackle the repair. The rebuilt forward hatch and new ports above the v-berth remained absolutely watertight.

The other good news was that the new oil pressure sender solved the instrumentation problem that had thrown me for a loop on December 3rd (despite the fact that I had been assured by the Beta expert that they seldom fail).


Unfortunately, the weird intermittent failure of the engine hour meter reappeared. It was working fine when I restarted the engine with the new sender to let it run for a while. When I rechecked 20 minutes later, the meter was still illuminated but the numbers had disappeared. It could be an internal component that fails when it warms up, or a marginal connection that fails from vibration. In any case, I think it will be cheaper and easier to wire in a new Hobbs meter than to try to solve that one.


My reward for all this slogging up hill was to to install the remaining table leaf and call that project done. As you can see from the photos, I still need to fill the screw holes on the mast post with bungs. During the week I put the final coat of varnish on the wood strip that will be the source for the bungs and just need to rub it out and cut the bungs so I can finish the post project.Next weekend I'll be in Des Moines with Carol's family for the holidays, but may have a few days before the new year to make a bit more progress.

Happy holidays all!

December 13, 2010

The rain that had been predicted earlier in the week was delayed, so I dedicated the two dry weekend days to trying to install one of the new ABI ports. One of the removed and crudely patched ports was leaking, and if I could staunch that, I would have finally gotten all the cabin leaks taken care of. The ABI ports are beautiful heavy cast and polished bronze, but a challenge to install because of the downward-slopping flange, height that allowed no margin for error when placing them, and the two different radii for the top and bottom corners (See October 25 post). My basic plan was to follow the method that worked for the Ta Chiao ports (See November 1 post.), but this one would be a bit trickier.

First step was filling part of the old port hole recess to accommodate the shorter ABI port. This time I used the thinner glass fabric rather than heavy roving, which worked out better. Although it required even more (40+) layers, it was easier to handle and allowed more a more precise build-up, which resulted in much less filling and fairing. Cutting as many as six layers of fabric at once sped up the process. Still, it took most of the day Saturday to grind away the old caulk, grind a bevel to receive the new fiberglass, lay up the fiberglass, grind it flush, fill and fair it. In what was left of the day, Scott helped me tighten up the bolts on the leaking doghouse skylight. In the process we discovered that my previous helper hadn't been too good about getting them really tight, and at least one was stripped and not doing anything. I'm optimistic that we will have conquered the leaking skylight.


Once the hole had been filled, I used the template I had made previously to place the new port and mark the locations of the centers for the four corner holes. These four points were critical as they would determine the size and location of the entire cutout. Because of the size of the interior mounting flange and the limited space on the cabin side, I had to get it right.
I used an adjustable bevel gauge to capture the angle of the sloped flange on the port and then set the angle of my drill guide. I used the drill guide to drill pilot holes which in turn guided the hole saws that were too big to use in the guide.
The resulting four holes determined the cutting lines for the jig saw cuts that would connect them and complete the cutout. The top and bottom cuts had to be angled, so I used the bevel gauge again to set the saw blade angle.
Once the angle was set, I screwed some scrap to the cabin side to guide the saw and made the cuts.But no matter what type of jig is set up, a hand jig saw is not a precision machine tool. The blade is held only at one end, so it tends to flex, especially when cutting at an angle through thick hard material like fiberglass. So I wasn't surprised that one of my cuts was less than perfect. I had anticipated some careful grinding would be required back in October when I made my test panel cut-out. Alternate grinding and trial fitting eventually got the job done. It also turned out that I was about 1/8 of an inch too high in my placement of the cutout, so I had to grind away a bit of glass on an interior stringer where the ceiling meets the cabin wall. Not difficult; just very messy, throwing fiberglass dust everywhere.
With the cutout completed, I epoxied the exposed edge of the plywood liner and filled the gap between the liner and the fiberglass with epoxy putty. I had hoped to get the port installed and sealed up by the end of day on Sunday, but I was running out of daylight fast. I set up an infrared heat lamp to try to speed up the curing of the epoxy.I had hoped I could cut and place the butyl tape around the port while the epoxy cured, but it was just too late and the epoxy wasn't curing in time. It would have to wait until the next dry weekend. I had no choice but to temporarily cover up the hole with plastic sheeting and duct tape. I had just enough energy left to clean things up enough to go home and recuperate.
News flash: The new oil pressure sensor arrived today, so I will hopefully be able to solve my engine instrumentation mystery soon!

December 6, 2010

A blanket of fog had settled over the Delta Sunday morning, so I negotiated the narrow and serpentine levee roads that led to the marina with just a bit more caution. Rather than stress over the delay, I settled back, sipped a steaming cup of coffee and listened to classical music as I drove. The forecast called for more rain, so I had planned to continue the rainy day projects I started on Saturday. I had managed to get one of the table extension leaves refinished and ready for installation (the other still needed another coat or two of varnish) and picked up a few supplies, but that's about it. The big item on Sunday's agenda was trouble-shooting the engine instrumentation problem. After studying and annotating the manual at home, I was ready to meet the challenge with a new and steely determination.

First, I needed to be sure that the engine was getting full voltage. It was. Next, check the wiring harness connections. I disassembled them, cleaned the contacts, and reassembled them. No change in the symptoms. I disassembled and cleaned the connections to the oil pressure sender. No change. Finally, I cut the wire to the sender near the gauge, disconnected it at the sender and ran a separate and brand new jumper wire from the gauge to the sender. No change. However, with no wire connected to the gauge, it did register zero oil pressure. I concluded that there was no fault with the wire from the gauge to sender and the chances were good that I have a bad sender. So my next step will be to get a new sender and see if that cures the problem. The drama (trauma?) continues....

I spent the remainder of the day doing projects inside the cabin, since it had begun raining by mid-morning. A couple of modifications to the stove installation were my first priority. The changes were needed to mitigate some serious safety hazards. As on my previous boat, the original stove had been replaced by a larger one, which placed at least one burner too close to a flammable bulkhead. To make it worse, there was also a pretty crude wooden spice rack screwed to the bulkhead in the most hazardous place possible (probably to hide previous heat damage). In the "before" image you can see the damaged finish behind the spice rack. To fix these issues, I removed the spice rack and mounted a piece of mirrored stainless sheet as a heat shield , leaving about 1/4" of clearance between it and the bulkhead as well as around the edges to ensure air circulation. The only tricky part was holding the screws and spacing washers in place while it was mounted. With no room for fingers or pliers between the sheetmetal and the bulkhead, I tried temporarily taping them in place to the back of the stainless sheet. It proved to be a simple and effective solution.

The other safety issue resulted from the stove swinging forward on the gimbals whenever the oven was opened. Can you imagine what would happen if you opened the oven while a pot of water was boiling on top of the stove? The Previous Owner's quick fix was to tie the stove to the guard rail. Not only was that tacky-looking, but it didn't work: the stove would still swing forward enough to be dangerous when the oven was opened. To secure the stove firmly, but still allow it to be released easily when necessary to swing when the boat is heeled at sea, I installed a barrel bolt forward on the side where there was room and improvised a polished stainless toggle aft using a backing plate from a u-bolt for the side where there wasn't clearance for a barrel bolt. After seeing that Worst Marine wanted $50-$60 (!) for a stainless or bronze barrel bolt, I looked for a more reasonable alternative and found a solid brass barrel bolt the right size for $6 at the local hardware store. Even if it corrodes in just a couple of years, it would be a cheap and easy thing to replace.
Next was installing the saloon table extension leaf that was finished. That was simple, quick, satisfying, and a long time coming. The table saga goes back to early October when I worked on salvaging the corroded, gunked-up, seized-up and very expensive Soss hinges. And don't get me started on the trials of trying to get a blemish-free finish. Anyway, it's all there in the October and November blog entries.
I'll install the other extension leaf as soon as it's "finished."

I decided my next little project would be to finish organizing and filing all Circadian's equipment manuals and other paper bits partly because it would allow me to enjoy using my newly refurbished saloon table. In the process I discovered a few little gems I didn't know I had, and gleaned a little more information about Circadian's history. Based on a long-gone liferaft's certificate of inspection from 1996, she had apparently been actively used at least until then. I also found the instructions for raising the genoa on the furler and tightening the luff, which had heretofore been a bit of a puzzle.
It was a real treat to do something useful and satisfying that was free of trials and tribulations. I wound up the day by digging out a couple of old GPS units that came with Circadian for later testing at home. After buttoning up everything, I drove back home through a heavy rain.

December 3, 2010

I got a call from Scott on Wednesday telling me that the crane would be at the marina the next day to step someone's mast and I could use it to remove the big old genset that was now sitting in my cockpit. I took the day off on Thursday so I could bring the boat over to a corner of the marina known as "Bill's Boatyard" for the operation. The "boatyard" is nothing more than spot next to the bathrooms that's close enough to the bank for the crane to reach out to boats squeezed into the corner. While waiting for the crane to arrive Thursday morning, I installed the polished stainless heat shield for the bulkhead by the cook stove and started work on a cover for the windlass motor hanging down from the ceiling in the v-berth. About noon we got the boat moved and tied up at the "boat yard."I removed the teak doors from the aft cabin companionway so they wouldn't get damaged as the monster genset swung around. We padded other vulnerable areas with plywood, carpeting and blankets. Dennis, who was paying for the crane to re-step his mast, helped Scott and me prep for the big hoist. We rigged tackles to control the position of the big genset as it was eased up and around the overhanging aft end of the doghouse. Once the crane arrived, it only took a few minutes to hoist the monster out and set it on the back of Scott's flatbed truck.It all went without a hitch...until I started Circadian's engine to bring her back to her berth.
The oil pressure warning buzzer continued to blare after the engine started, even though the idiot light was not on and the gauge showed 75lbs. Not wanting to risk destroying a nearly new engine, I immediately shut it down. Turning the key to the "run" position without starting the engine got the same indications: buzzer blaring, no idiot lights on, and 75lbs of pressure showing on the gauge. Very odd. I tried starting the engine again just long enough to see if I could tell if oil was circulating normally by looking in the fill hole on top of the valve cover while it ran. I couldn't tell, so I shut her down immediately again. By this time we had to get Circadian out of the way so Dennis could get his boat in position to re-step the mast. Scott's brother Jeff ended up towing me back to my slip using the marina's little work boat while Scott helped Dennis re-step his mast. It didn't help that it had begun raining; I was now cold and wet as well as disheartened. I spent some time escaping from the rain by perusing the troubleshooting section in the engine manual. It advised that the symptoms indicated a faulty ground. That might also explain the intermittent failure of the electronic engine hour meter (although that was still working fine). While that's a whole lot better than oil pump failure or something worse, it's still a pain in the ass to find the fault. I checked all the connections under the instrument panel by sight and feel, and everything seemed clean and snug. The connection to the sender appeared solid as well. I tried cleaning and re-securing the ground connections I had messed with when I installed the radar ground originally. No luck. To add to my woes, I discovered the newly rebuilt and re-bedded skylight in the doghouse roof had developed a new leak.
I was out of time and enthusiasm, so I put things away and called it a day. In the next few days I'll study the engine wiring diagrams and see if I can sort out the grounding circuits. Based on my previous unrewarding experiences trying to solve ground fault problems, it will probably be easier and more successful to just add a new ground circuit. As for the skylight leak, hopefully all that will be required to staunch it will be tightening the mounting bolts. Sigh. Always something!

November 30, 2010 Special Supplement

Okay, this is not exactly part of the Circadian saga. But The Admiral thought I ought to add this anyway. Part of last week's holiday festivities was going to a big Thanksgiving dinner in Oakland, to which we needed to bring a dish. Carol had figured out how to make a trifle, half in LA and half in Sacramento. One of the Sacramento tasks was whipping the cream. Well, all I had was a hand whisk, which The Admiral insisted would never do. We went to three stores looking for a hand beater, but had no luck. I tried to convince The Admiral I could MacGyver something, but she was dubious. Well, I did it and it worked quite well, even though it might be more Tim Taylor than Angus MacGyver. The proof is in the pudding (or trifle).

November 29, 2010

As planned, I spent a most enjoyable long holiday weekend with Carol. Because the office was closed Wednesday, however, I was able to squeeze in half a day on Circadian. I installed the refinished table and the new cover for the mast support post. It all went pretty well, although some clamping pressure was required to squeeze everything into alignment. Of course I also had to do a bit of grinding, this time on the top of the post cover to fit it around a ring on the ceiling moulding. (Nothing fits the first time on a boat.) The final result, though, was a very snug fit: absolutely no movement or rattles when you jerk on the new attached grab handle.


As you can see in the photos, I still need to insert bungs to cover the screw holes on one side. That presents a bit of a challenge because normally the bungs are trimmed and finished with the rest of the piece. I can't do that in this case without having to refinish the whole thing, which of course I don't want to do. I plan to pre-finish a thin strip of jatoba from which I will cut the bungs. Hopefully I'll be able to insert and glue the thin, pre-finished bungs so they are flush with the surface. We'll see....

I also tried out my new screw extractors on the broken-off old bronze screws that secure the teak hatch hinges. They worked great. Very cleverly, the saw teeth are designed to cut counter-clockwise, so it encourages the screw remnants to come right out as you make the surrounding circular cut.I glued dowel pieces (which didn't need to match since they will be covered by the hinge) into the resulting holes and then trimmed them flush with a chisel. You can see in the photo that it's not as clean as what the flush-cut saw would have done, but I couldn't use the flush-cut saw because of the recess for mounting the hinge flush with the wood surface. Again, it won't be visible, so as long as it's a strong joint, it doesn't need to be elegant.The old generator is still sitting in cockpit waiting for a break in the weather so it can be removed. The prospects for the coming weekend don't look good at the moment, with yet another storm moving in later in the week. Looks like I won't be able to tackle the next port installation for a while either. Ah well, there's always something that can be done!

November 21, 2010

I have two excuses for not getting much done this week: it's been raining and windy, and Carol is coming up for Thanksgiving, so a lot of time has been spent housecleaning. I did manage to pick up a few things I needed: a piece of polished stainless sheet to shield the teak bulkhead from the heat of the stove that has a burner that is too close to it, and the screw extractor that will hopefully allow me to recover from the calamity of broken screws compounded by a broken drill bit. The good news: this post will be blessedly short!
The only Circadian work accomplished this week was to finish rubbing out the polyurethane finish on the new jatoba wood cover for the ugly painted iron mast support post in the middle of the saloon. It's now ready to be installed. You can see in the photo that jatoba is a pretty good match for teak. The grab handle is teak; the rest is jatoba. (No staining or Photoshop tricks on the woods.) It's only partially assembled, since it has to be disassembled and then re-assembled around the post. If you have really sharp eyes, you might be able to detect the tiny light gray spots that are the bung holes for the screws. They are gray because because they have residual rottenstone powder in them and the bungs haven't been inserted yet.

Happy Thanksgiving all!

November 15, 2010

This post may be a little late, since I'm still dragging from a pretty intense weekend. During the week I fabricated some teak blocks to mount new latches for the teak hatches, which had none to secure them. I also did a bit more finishing work on the table parts and mast post cover.

The main mission for the weekend was to remove the big old Westerbeke 4.4 kw genset which had never been completely installed and whose operability was dubious. I don't need or want a big monster like that, and I had previously struck a deal with Bill, the itinerant master diesel mechanic, that he could have it if he removed it. Once out, I can use the space for something better like a work bench with organized tool storage and a vise.

Friday was the big day, so I took the day off to lend a hand and keep an eye on things. I was there early, and so spent a couple of hours working on the forward hatch that still had a bit of a leak despite rebedding with butyl and a new gasket. I relied on the wisdom of Sherlock Holmes to solve the mystery: "When you have eliminated the impossible, what remains, no matter how unlikely, must be so." In this case, although unlikely, the leak had to be around the butyl between the metal hatch frame and the teak mounting base. Because of the way the base is constructed and where the water was entering, it was impossible to be leaking elsewhere. I concluded I needed to compress the seal more using the clamping method that had recently proven effective on the portlight installation. I removed the hatch's mounting screws and clamped and squeezed and clamped and squeezed until I had gone entirely around the perimeter. I replaced the screws tightly and set the hose running water over the hatch to test the seal. About this time Bill arrived, along with Scott, one of the two brothers who own and manage the marina. The two of them spent the better part of the day on the big hoist.

The first step was to remove a panel from the cockpit lazarette so the genset would clear. That entailed removing some teak trim strips that hid a seam and then cutting through a single layer of fiberglass along the seam on the inside. Next, a beam and support posts were set up using pre-fabricated lumber components that Bill had made earlier. The rest was basically nervous pulling on the chain hoist and tugging on the genset while I tried to keep the wobbling post and beam stable (... to the accompaniment of a great deal of gratuitous grunting, groaning, complaining and cursing) until the heavy genset was resting on the cockpit engine cover I had built back in May. It was reassuring to see that it could hold an estimated 800-900 lbs without protest (genset plus two big guys).
Because I had been diverted and distracted from monitoring my testing of the seal on the forward hatch, the water had been running over the hatch for a loooooooooong time. No leaks !!

The plan for removing the genset was to move the boat at high tide on Saturday to a part of the marina where Scott's backhoe could be used to lift the genset out of the boat, then move the boat out from under it and back to her berth. I started up Circadian's engine to warm it up prior to the move. The electronic engine hour meter was now working!! Amazing! It must have been a computer glitch that 'rebooting' cured. Unfortunately, when the appointed hour for the move came, Scott couldn't get the backhoe started. A little impromptu exploratory surgery by Bill revealed a broken starter motor shaft. So much for plan A. Plan B: Do it next weekend if the backhoe is back in operation. Plan C: Use the crane that is supposed to be on site some time in the next week or two to restep someone's mast. I know...God is laughing! Perhaps that's why there is now three days of rain in the forecast for next weekend.

Since I wouldn't be spending Saturday getting this big white elephant of a genset the hell out of the middle of my cockpit, I went back to work on "the list:" sort out the forward lower spreaders and make sure all the turnbuckles are secured with cotter pins, get the anchor light working, wire up the steaming light, move the radar ground, complete the rebuild of the teak hatches, etc, etc, etc.

Solving the mystery of the non-functioning anchor light was the first task of the day, since I would likely need to climb the mast and it's best to do that in the calm of early morning. This time it was the wisdom of "Occam's Razor" (Look for the simplest solution.) that helped. I checked the breaker and current was getting through, which left the splice to the wire coming through the mast, the wire in the mast, and the new LED bulb I had installed when the mast was down months earlier. The splice seemed solid, and it would require re-doing it to check it. A bad wire through the mast was too horrible to contemplate, and besides, it had checked out fine when the mast was down. The simple thing: the bulb had worked loose during the process of restepping the mast. So, I turned on the breaker and climbed the mast to check the bulb. Sure enough, it was no longer properly twisted into the socket. A little twist and I had an anchor light. I rejoiced in my good fortune!


Since the electricity gods were looking upon me with favor, I next moved the radar gound from the engine to a small ground plate on the hull. That was routine, including the usual uncomfortable contortions. Encouraged by my success, I decided to tackle the mystery of the forward lower shrouds. When I restepped the mast, I carefully measured from the masthead to the port and starboard main shroud chainplates to make sure the mast was centered and vertical. As I snugged up the lowers, I sighted up the mast to make sure it remained straight. That theoretically should result in the lowers being centered as well. However, in the words of Yogi Berra, "In theory there is no difference between theory and practice. In practice there is." The mystery was "Why is only the starboard lower apparently just enough too short to prevent the turnbuckle from screwing down enough to allow inserting a cotter pin through the shaft?" So, this time it was Yogi who provided the essential clue. I had to actually measure the distance from the lower shroud attachments on the mast to the chainplates. That, in theory, meant climbing up and down the mast three more times (once to secure the tape on one side, once to move it to the other side, and once to take it down). In practice, it required four round trips because the tape fell off once. It's amazing how the mast gets taller and the steps get further apart each time. So, I now had a total of 5 round trips up the mast. But I had my answer: The mast was perfectly centered, so the two shrouds were simply not exactly the same length. I had the answer, but what was the solution? The simplest solution would be slightly longer turnbuckles. Not cheap if I had to buy them, but simple. I now had another stroke of amazing good fortune: months before I had bought two turnbuckles to replace a couple that went missing after the move from South Carolina. They were the wrong size and I had intended to return them, but never did. Amazingly, they were just exactly what I needed to replace the slightly too short turnbuckles on the forward inner shrouds. I was a happy, but tired, sailor!

I had just enough energy left at the end of the day to lay a coat of Cetol on the bases of the teak hatches I had been rebuilding. I also coated the exposed 3M 5200 to protect it from UV radiation.

Sunday I faced up to the challenge of mounting the teak blocks to the underside of the teak hatches so I could mount the new latches. The tough part was drilling holes in the side of the hatch cover with less than 3/8 of an inch clearance from the plexiglass on top. I bought a 12-inch-long 1/8 inch drill bit in the hope that I could get the four required holes drilled before I broke the bit. The angle would be slightly off, but it would be close enough if it worked. It did. And, I didn't even break the drill bit!

But that was the last of my great string of good luck. Some of the old bronze hinge screws for the hatches had corroded away inside the teak and broken off when I tried to extract them. I tried drilling them out using a self-centering bit for drilling pilot holes for mounting hinges. It was a great idea in theory; in practice, it was a disaster. The drill bit broke off down in the teak next to the broken screw. Now I had a bigger problem. But, I couldn't deal with it now. So, I added some neoprene weather stripping to the hatch lids, and screwed them down as best I could. At least the new latches worked nicely. Next step will be trying screw extractors to saw a hole around the broken bit and screws, then plugging the hole with a piece of dowel, and finally drilling a new pilot hole in the dowel. Sounds good in theory. Stay tuned to see how it works in practice.


November 8, 2010

It was a cha-cha week on Circadian: one step forward, two back. During the week I took several more measures to eliminate dust and grit in my final varnish coats. I moved my HEPA filter into the guest bathroom I used as a clean room and let it run for 24 hours. I filtered the varnish into a new plastic cup that had been blown out with canned air. After vacuuming the surface to be varnished, I wiped it down with a tack rag and followed that by blowing it off with canned air. It all helped, but there were still flaws. It only takes one hair, flake of dandruff, bit of dust or moth to mar an otherwise perfect surface. Duh!

Sooooooo, Saturday I bit the bullet and decided I had to do what I had been working so hard to avoid: a hand-rubbed finish. I was able to get powdered pumice and rottenstone at Woodcraft, where they not only have it, they don't look at you like you're crazy when you ask for it. I already had some 2000 grit wet sandpaper (usually used for color sanding auto finishes), finishing wax, and a new secret ingredient: Pledge.

I wet sanded the table top, followed that with pumice mixed with a bit of water to make a paste, which was followed (after removing the pumice completely) by the rottenstone, also mixed into a paste. Lots of rubbing, always with the grain, of course. Then I applied the carnauba finishing wax to add more luster. It did, but it also tended to streak and show marks wherever it was touched. As an experiment, I tried going over it with some Pledge. Eureka!! Whatever oil or other secret ingredients are in that stuff, it did the trick. No fingerprints, and a nice smooth luster that shows reflections, but doesn't make the wood look like it's covered with plastic (which it is). So from now on, frustration will be replaced with elbow grease.




Sunday it rained steadily, but I wanted to go to the boat to check for leaks, replace the steering wheel and finish wiring up the radar.

The one teak hatch that wasn't covered with plastic sheeting seemed fine. I did discover that one of the covered-over holes for the old ports was leaking, so I now know which new port gets installed next. Much to my surprise and disappointment, I discovered the forward hatch that I had redone was leaking somewhere between the frame and the base. I tried tightening the mounting screws in the rain, to no avail. There was one screw the wrong size that could not be tightened securely, so that might be it. There's a lot of butyl around the base, but I didn't pre-compress it with clamps like I did with the new ports (which, by the way, did not leak). When I get some dry weather, I'll remove all the mounting screws, stuff in more butyl, and use clamps to compress the butyl.

I had to replace the steering wheel that I had just removed (with some difficulty, you might recall) because the mechanic who is going to remove my old generator wants to do it next week. To pull it off the boat, we need to move the boat to another part of the marina. Steering will be a necessity! The steering wheel's mounting screw would not go back into the shaft because it took so much force on the wheel puller to get the wheel off that the pressure from central pin on the puller distorted the first few threads in the steering wheel shaft just enough to prevent the mounting bolt from screwing in. No worries, I thought; I'll just re-tap the threads. No big deal, since I had a tap and die set on board. English boat, English threads, right? It turns out, no. So, I had to drive into town and get a metric tap the right size. Fortunately, they had one, and it did the job.

Next: wire up the radar display. Months ago while hauled out in Napa, I mounted the antenna on the mast while the mast was down, and eventually got the antenna wire through the mast. (See January 31 and February 15 blogs.) But under the gun to get the boat in the water and to her home berth, I never had time to wire up the display and check to see if everything worked. So, for all these months, it's been a little concern nagging at me. The day of reckoning had finally arrived. Luckily there was a breaker available on the panel and a route for the wire into the doghouse that didn't require any drilling. However, the instructions also called for a ground wire to be run from a terminal on the display "to a bolt on the hull (or weld)." Clearly they were assuming a metal hull, since fiberglass is an insulator. I found a bolt on the engine that had several other ground wires terminated to it, so I thought that would be a good spot to ground the display. I had just enough black wire to reach, too. Once I had everything wired up, it was time for the dramatic moment: would it work? I pressed the power switch. The display immediately lit up and showed the proper first screen. Yeah! Okay, but the big test was would the antenna and the cable connection work? I hacked around with the buttons and on-screen menu until I had arrived at the display that should show the radar image. Blank white screen. I went through the sequence again just to be sure I had done it right. I had. Still a blank screen. The roar of stomach acid flowing was palpable. I had visions of big problems and big expenses. I was able to push back the tide of anxiety and negative fantasies long enough to recall the wisdom of Occam's razor, which in this case meant "Look for the simplest problem/solution first." I jiggled the antenna connection on the back of the display. Voila!!! A radar image! Whew!!!



While I won't be able to permanently mount the display until I get a new ceiling in the doghouse, it was a great relief to know the radar is working.

Since I will need to move the boat next week, I thought it would be a good idea to make sure the engine and running gear were working properly before I left. Besides, the engine hadn't been run in quite a while, and it needed some exercise. I could let it run while I cleaned up. I checked the oil, which was still clear since the last change (only about 10 operating hours ago), and opened the raw water intake seacock. The engine started right up, water was gushing out the exhaust as it should, and she ran smoothly. There was only one fly in the ointment: the electronic digital engine hour meter was blank! Damn! Always something. I checked the connections on the back of the panel and everything seemed solid. Short of some sort of internal computer failure, the only thing I could think of that might have caused the failure was that there might be a ground connection at the engine bolt I used to ground the radar that had gone bad as a result of the removal and reassembly. Well, I was out of time and couldn't try to test that possibility. If a simple fix like cleaning and reconnecting the grounds doesn't do it, I'll have to just buy a good old reliable Hobbs meter and wire it into the ignition circuit. Stay tuned!

November 1, 2010

My accomplishments for my week of boat work went almost as planned (about as good as it gets). I picked up the heavy glass mat and epoxy resin on Monday, and returned to the boat on Tuesday. It took another 16 (!) layers of mat to fill the two old port holes (pun intended). On Wednesday I ground the new glass close to flat and flush, using a straight edge to find and mark the high spots. I got to wear my new Wes Cravens designed grinding outfit, hoping to mostly avoid the infamous fiberglass itch.Next followed three cycles of filling the low spots with Microlite putty and fairing it flush and flat with the manual sanding board (torture board). A foot-wide $3 plastic smoothing tool was a great help in applying the putty flat and smooth across the entire area.
The rain predicted for Thursday was delayed, so I was able cut out the holes for the new ports using my big hole saw and new jig saw. As anyone who's done it will tell you, cutting big holes in your boat, even above the waterline, is always traumatic. "Measure twice, cut once" was a mantra I repeated over and over. Careful use of drilling and cutting guides helped it go smoothly. Cut-outs showed that my laminations were good: no gaps, all the mat layers fully saturated with resin A little grinding to round the inner edges and the ports slid into the new holes perfectly. Whew!! I coated the newly-exposed edges of the plywood interior liner with epoxy so it wouldn't absorb water and rot in the event of (Heaven forbid!) a leak. While I waited for the epoxy to cure, I cut and applied butyl tape to a porthole flange. In addition to the flat cut pieces of butyl around the outer flange, I added a strip around the corner where the inner and outer flanges meet at a 90 degree angle. The theory was that it would squeeze out between the inner flange and the edge of the hole, resulting in a good seal.

The epoxy around the hole on the sunny side cured quickly enough for me to try to bolt in the port. I soon discovered that my newly-purchased bronze machine screws were too short to extend through both the uncompressed butyl and the mounting flange. Damn! After a few moments of high anxiety, I thought I might be able to use a couple of clamps to compress the butyl enough to get the screws through. By repeatedly clamping and reclamping around the perimeter and using a lot of clamping pressure, it worked like a charm. The individual butyl pieces welded to each other nicely, and the excess squeezed out between the flange and the hole as I had hoped. Of course some also sqeezed out around the inside mounting flange on the cabin side, but that was easily removed simply by cutting around the flange with sharp knife and lifting off the excess. At this point, the epoxy around the hole on the shady side still wasn't cured, it was getting late, the rain was coming in, and I was beat-all good reasons to call it a day and head home.

It rained Friday and Saturday, so I continued with the shop projects. I rounded the corners on the mast support post cover, cut matching bungs from scrap jatoba and glued them in place on one side. On the other side (the piece that will be screwed on during installation) I mounted a teak grab handle. No, I didn't make it. At twelve bucks (even at Worst Marine), it wasn't worth the time. The next morning, after the glue had set, I trimmed the protruding bungs flat using a flushcut saw. I find it works better than using the usual chisel method. Even with a sharp chisel and thin cuts, I usually end up with some of the bungs breaking off below the surface. The flushcut saw doesn't scratch the surface and results in the bung trimmed so close to the surface that normal finish sanding is enough to make it perfect. Finally, finish sanding of the post cover pieces, and between-coats sanding of the varnish on the table parts. Last thing Saturday was to apply varnish all around.

Sunday was a beautiful day. I installed the second port as I had the first and applied a bead of 3M 4000 UV around the ports to finish off the installaton and create a redundent outer seal. With some white plastic caps to cover the protruding nuts and bolts, it will be a pretty clean installation. I cleaned up the week's mess (well, mostly), and called it a good week.