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Drew

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Drew last won the day on December 2 2016

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About Drew

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    Drew

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  • Gender
    Male
  • Location
    Canberra, Australia
  • Interests
    Coresound 20 Mk3 #5 under construction

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  1. Just a thought on fuels from a pilot's perspective. Mogas is not used in GA and light commercial aircraft because: 1. it is less well regulated for quality and consistency; 2. the aromatics in it can damage and sludge tanks and; 3. because it has a much shorter shelf life than avgas. The assumption is that mogas at service stations normally gets turned over fairly quickly. Ethanol fuels are not used (as in illegal in Australian aviation) because they absorb moisture very quickly. I have seen demonstrations that show that one flight in moist air at 10,000 ft can result in a frightening amount of moisture in the fuel. Sailing being a moist environment (irony) I would think that ethanol mogas is going to absorb a fair amount of moisture the longer it sits in a fuel tank, and that will affect running of the engine and sludge formation in the carby as well as internal corrosion. I wouldn't use ethanol in an outboard motor just in case.
  2. Alex, thanks for the suggestions. Regarding the tabernacle, I have built according to the plans and don't believe I would use a mast that is larger than 83mm. Anything smaller and I will shim the inside of the tabernacle to suit.
  3. Great suggestion Graham. Thanks. I also want to be able to use the boat as a 'pointy caravan' when on the road. My current thinking is a mizzen tabernacle that is high enough to clear the cabin top for lowering masts to travel or clear bridges but the hinge pin will be similar to the type we use in some aircraft, a smooth stainless pin with a safety circlip in one end. That way the foot of the mast can easily be removed and lifted up onto a temporary crutch to clear the cockpit and companionway.
  4. Hi Capriosca, nice to hear from you. I did some flying with Vanair years ago out of Vila on the milk run up to Santo and back via Ambae etc. I have had no trouble with mixing the Bote Cote epoxy. It is only my preference because of chemical sensitivity as it is promoted as less toxic than other 2:1 epoxies and it seems to have a high resistance to degradation in water. I would think that the humidity in the islands is going to work against a paint that is already way too heat sensitive. I also found that the undercoat finishes with an orange peel finish off the roller, although, unlike the finish paint, I had some success with rolling and tipping. It cures very hard which means huge amounts of sanding and the inevitable scratches that are too deep to remove without filling. If I use the rest of the paint that I have left over, I will do it with a wet floor and a cool air temp in the shed.
  5. Alex, I too am having trouble finding suitable tubing that fits the specs without the expense of importing a special order, which I find very surprising. I tried the contacts that Alan recommended some time back, but they claim they can't supply without importing. Their 3 inch tube has a wall thickness of 6mm, so is not only heavy but won't mate with any suitable tube for the top mast section. I have no idea why. If anyone finds a suitable supplier in Australia, please let us all know.
  6. Thanks Steve. I am just designing my own based on the main tabernacle and giving it enough height for the mast to clear the cabin top. It means I will have a great big stump in the middle of the cockpit, but I won't have to lift the mast up out of its socket to dis-mast, which could be good when solo sailing which I like to do.
  7. Thanks PAR, that is reassuring and fits with what I am seeing with the epoxy. I have buffed the hull finish (four coats of finish) and it is a good 10 foot finish, so it will do. I will say though, the undercoat and finish coat combined is hard as a rock. Hi Amos, I bought the large Anderson bailer and removed the little flap on the end of the venturi, so I will use the one for both filling and emptying, with a portable electric pump as a back up. I hope to have the boat in the water by middle of this year. Behind schedule but that's life. The fun is in the journey as well as the destination.
  8. Well guys, I think it is time I reported in. I have watched every day as progress is made on the other boats and the Everglades Challenge prep and finish. Congrats to all, especially to Graham for knowing when to withdraw gracefully to come back another year. I have fitted in a good deal of work on Dragonfly in between life and paid employment. The boat is back in her cradle, I have completed a trailer that isn't the prettiest trailer around but will do for now. I have fitted the self bailer and the reinforcing pad for the mizzen mast base. The cockpit sole is ready to epoxy in place and then fillet and glass before painting. I am currently building the forard tabernacle and considering a mizzen tabernacle as well. I built it with oak, but that is probably overkill and more weight than needed. I decided to put a screw-in hatch in each of the three bouyancy chambers under the cockpit sole to allow for storage and also drying out if any moisture gets in there. I used Aqua Cote paint on the hull and am a little disappointed. Despite diluting, it flashes off so fast that it is hard to avoid some dull patches, but this will do for now. I really like the Bote Cote epoxy though as it is a bit safer and I need to be very careful of chemicals (gloves and mask at all times). PAR, I would love any comments you might have regarding epoxy that is now 18 months old, quite thickened and harder to pour, but still seems to cure as hard as ever.
  9. I just like his tool selection. I'm jealous Amos! Oh yeah, boat is coming along nicely. Mine is back right way up and ready for completing the topsides.Pics soon.
  10. You are so right Howard. When solo sailing outside, and when my crew mate was down below (when I had one), I have had a rule that I don't step out of the cabin without clipping on. I intend to transfer that rule to the 20 footer once she is in the water. It might be a smaller boat, but the ocean is still a big place. I haven't tried this one, but I have known people who also trail a line attached to the self-steering disengage lever on the theory that once over the side and being dragged along like live bait they can grab the disengage line and let the boat heave-to.
  11. What a great adventure. As some people say - the adventure is as much in the journey as the destination, which is why I love to sail. Regarding incidents and accidents, in aviation we call this "press-on-itis". I have attended, as well as read reports of, many fatal accidents that should never have happened except that someone had a schedule in a light aircraft. When I teach navigation I hammer this into my students - area and terminal weather reports exist for a reason! Great decision Graham and good luck with your prep for the EC.
  12. Will Graham go out into open waters now? What is the weather like? Would he make more ground speed in open water? I would love to visit that part of the world - in a small yacht of course
  13. Nice! Very satisfying to play blacksmith
  14. Interesting idea. Kind of like a bow thruster for sailing vessels.
  15. This looks very interesting. It will be interesting to see what it does to your centre of effort and helm balance. I'm sure that different points of sailing will have different effects. Good luck and fair winds Graham.