Hi everyone,
Since relaunching we've been flat-out working on above the water-line jobs. The key jobs were fixing the leaking dorade air vents and swapping out our two 12 year old 120W solar panels for two new 200W panels. With the help of OCC sv Metzi we also constructed a dinghy cover, mini-bimini and sun shade. And countless other small jobs were completed.
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SXM sunset over our new solar panels |
The two dorade boxes were fibre-glassed onto the coach roof, each located with six screws fastened from below. After 39 years some of the screws had rusted and one was clearly leaking, allowing water into the head compartment and saloon. The boxes were cut off using a MultiTool.
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Multitool (here fitted for sanding) |
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Dorade boxes removed |
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Dorade boxes underside |
We removed for forward headliner panel in the saloon to access the underside of the dorade vents. We had previously removed the built-in headlining in the head compartment to identify the source of the leak. In both compartments we removed the rusty mounting screws then filled the holes with filler from below and epoxy resin from above.
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Dorade vent in saloon |
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Sanding the head compartment deck head for painting |
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The cause of the leak |
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Dorade base holes opened up for resin insertion |
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Preparing epoxy resin for filling |
Down below we sealed the gaps between head and saloon compartments. And we painted the head compartment deck-head with epoxy primer.
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Head to saloon gap sealed in saloon |
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And also sealed in head |
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Painting the deck head in the head compartment |
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Painting kit |
With the mounting holes filled and interior painting done we could re-assemble the head compartment's trim and cable runs. And with the exterior dorade bases filled, sanded and epoxy primed we could refit the likewise-treated dorade boxes. For this we used West System Six10, a thickened epoxy resin adhesive. It has a gel consistency and comes in a multi-use tube with single-use mixing spouts. Great product. We strapped the boxes down due to the windy conditions.
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Preparing to refit the boxes |
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Starboard side box |
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Port side box |
With the boxes mounted we sanded them ready for epoxy primer. The latter will have to wait for our next stop. But we should now have a leak-free deck!
We took the opportunity to swap out our two main solar panels. We had two Renogy panels shipped in from the US using The Business Point here in Cole Bay. The old panels were degraded due to their age, and nearly twice their original power is now available in the same size. So we could increase our total (including our two 100W 'wing' panels from 400W to 600W. This would allow freer use of our electric kettle, induction hob and our Starlink unit.
The old panels came off easily and with help from sv Metzi's larger dinghy we took them ashore. Happily some locals offered to take them to Bequia where they'll be put to good use. Much better than them going into the skip.
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Canvas rain-catcher and old panels off |
We fitted the new panels with shims outboard but not inboard. This allows us to grip the s/s rail around the outside and also - we hope - direct more water into the canvas water-catcher which fits below them.
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New panels |
The mechanical install took a day to complete. Next we wired-in the panels, making changes to optimise performance. Key to the latter was moving the MPPT Solar Controller from the NavStation to the saloon pedestal. This reduced the cable run to the batteries from about 4m to 0.2m. This was a huge improvement, reducing IR drops in the cables. We now have a redundant pair of Solar Controllers fitted.
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MPPT Solar Controllers in new location |
The controller has a Bluetooth interface for configuration and monitoring. It clearly shows the improvement from the new panels. The bar graph in the screenshot below shows the power generated over the last 30 days. The average has increased from 1.5kWh to 2.5kWh. The peak power we've seen is 550W which is pretty good from a 600W array.
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MPPT Solar Controller Status/History |
We'll describe the new canvas in a future post since they're still work in progress today. They're going to be great too. And the new thru-hulls and sea-cocks are dry!
Trust all's well where you are.