So a quick update on where we are at. The situation for Manchester is still chaos without agreement between the national and local governments regarding the level of lockdown we should be in. However, we are expecting to be more restricted soon (bearing in mind that Manchester has had it’d own lockdown for months anyway). As for travelling to Wales it is hard to find clear guidance as to whether the Welsh government have now made it illegal to travel from either tier 2 (High) or 3 (Very High). We took the view that it would have been wrong to go on Thursday when a ban was expected from 6pm on Friday (still unclear if that has happened). There now seems to be an expectation that a Welsh “Circuit Break” ban for a few weeks will be announced in the morning. We are working on the assumption that we might not be able to get to the boat again this year.
Fortunately we left her in good shape, the most watertight yet. So we are not worried about any problems on board.
We have some jobs we can do at home, while many of these are not urgent as far as launching is concerned they will at least allow us to feel we are making some progress while we can’t get to the boat.
Propeller Shaft: I wrote about the pitting issues in my last post. As none of the pitting is where bearings or seals go we decided to try to tackle it. Where there is pitting which is probably caused by electrical currents – either through poor earthing (electrolytic) or by currents between dissimilar metals (galvanic) – we are going to remove it. Pitting encourages more corrosion. The best way to avoid corrosion in stainless steel is a bright mirror polish and to have not used any other metals (eg saws or files) to achieve it.
So I have started removing the pitting using the angle grinder with a flap sanding disk. None of it is deeper than about 1mm. So far I’ve done about half of it (starting with the worst bits).
Once I have used the 80grit flap sanding disk to remove the pitting the shaft is no longer perfectly round and is definitely not smooth or polished. So I have 50m of a 25mm wide strip of 80 grit Emery Cloth. Using a strip of this wrapped around the shaft it should be possible to get it pretty smooth and round. I then have finer grades to remove the scratches before using a paste with a cloth to polish it as smooth as possible.
That should keep me busy for hours. A new propeller shaft would be a simpler solution but this should be perfectly serviceable for a few more years and saves waste.
Motor Mount brackets: I have the 4 angle brackets that will be bolted to the original engine bearers and which the flexible mounts will be bolted to. Just got another 10 or more holes to drill in them (10mm). That will leave only the 4 holes in the motor frame for the flexible mounts (not quite sure what size they are and the position isn’t finalised yet).
Domestic Battery Box: I’ve got to make some cut-outs in the timber for the nuts where the leads bolt to the busbar so that the busbars can be fitted. I can also make a lid (and adjust the design for a new expectation that the batteries will be lowered into it via opening the cockpit floor).
Motor Throttle Our motor throttle has a 6mm square shaft and I need to make or find a control lever for it. Trying to find something that doesn’t cost much, is reliable and doesn’t look clunky.
Motor Controller Heatsink: I want to get a really big and effective (and cheap) heatsink for the controller (because apparently they get really hot). My idea is so mount this through the (to be built) bulkhead between the motor compartment and the cockpit locker. This way the heat gets put into the cockpit locker while the controller is away from it in the motor compartment.
Dinghy: Jane has nearly finished the cover for the dinghy. I need to get and fit removable launching wheels to get it over the mixture of rocks and shingle where we will launch it.
Solar Panel mounts: I should be able to make everything I need to mount the solar panels to to the boat both on the wheelhouse roof and at the guardrails.
Propeller: We have the propeller at home and it still needs a lot of cleaning. One day money permitting we will replace it with a Bruntons Autoprop Ecostar, until then cleaning it is.
Emergency Steering: The two part emergency tiller (if the wheel steering breaks) has probably been in storage under the after cabin bunk for the whole life of the boat. There has been a little corrosion which means the parts no longer fit together. So we will fix this.
Consumer Unit mount: We now have a consumer unit for the mains power. We have a place for it which will allow us to access the trip switches. It is quite large as we have one switch for each of the 13 sockets we will have around the boat, we are running a separate wire to each rather than a ring main. However, it will need to be lowered for full access so I’m making a wooden frame for it to slide up and down in.
Navigation and control systems: I have plenty of fun planned getting Raspberry Pi computers sorted to run the chart plotter and other navigation software. I want them to interface with all our instruments, with the battery management systems, the solar charge controllers etc. We will have an indoor and an outdoor Pi so we can see everything when steering or when below. The indoor one will also be our entertainment centre and office computer.