Zonker

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Everything posted by Zonker

  1. About 7-14 days ago somebody posted a picture of a new motor yacht, maybe 100' or so, that somewhat resembled Dashew's FPB boats but a bit more "stealth aircraft" faceted deckhouse. Can anybody point me to that thread? Thanks.
  2. Zonker

    What To Do With This Cabin Sole

    I'd vote against Decko Dot unless you are very clean folks. We had it on our cabin sole and it grubby with full time living aboard. Hard to clean hairs etc because they would get trapped by the little dots. We changed to a more industrial vinyl and were happier.
  3. Zonker

    Bonding Delrin to SS. Glue Suggestions?

    For the average user G-Flex is your best bet. There are more esoteric plastic glues out there but are $$ and uncommon. Don't expect it to take a ton of load. However I did have a similar size piece of UHMW bonded to the front of our anchor locker. Never came loose and had a 5/16" chain running over it on a very regular basis.
  4. Zonker

    Expedition style motor yacht thread?

    Very good - but something closer to this:
  5. Lifelines are seldom 1/8" unless it is a very small boat that isn't following any racing rule. 1/4" on larger boats and 3/16" on smaller ones. But they are more designed to catch your body as a last resort than as a handhold...
  6. Zonker

    R2AK 2018

    There is also a difference between a prop that achieves max efficiency in flat water/no wind, and one that works when you are trying to leave/enter the harbour with a headwind and a bit of chop. Designing right on the tip of the peak efficiency curve is not a great idea. Better to be on the left hand side of the prop chart so you have a bit in reserve when conditions require a bit more push but speed is lower than assumed.
  7. Zonker

    Chiles vs Hancock on what is an "Open Boat"

    Not an "open boat". Massive respect to both Webb and Ant however. Both have achieved a lot in small boats. And Brian Hancock is a click baiting clown. From Dudley Dix's web site: "Ant's boat has a heavily cambered foredeck and side decks at gunwhale level, giving a far greater range of stability... Ant put in watertight bulkheads to break the hull into small compartments, some of which were foam filled. He also built watertight storage lockers all round the cockpit for his food, clothing and VHF radio (the radio was the only electronic item on board and was powered by small solar panels at the stern). The result was a boat which was about as unsinkable as he could make it"
  8. Zonker

    R2AK 2018

    I'd be slightly skeptical of an 84% efficient prop (in my world 55% and you're doing good). But for real low power where you are not restricted by RPM or diameter and you have really long thin blades maybe 84% is achievable. The only way you'd happily row a bigger boat is with small area oars (with lots of slippage past the blades). Two blade props are more efficient than three. One blade is better still in a perfect world (where one assumes a cow is a perfect sphere with no friction...) - but issues of balance come up! In the real world you're often constrained by cost, diameter and material properties (wind turbines) so 3 is a good compromise.
  9. Zonker

    Size 30 winch.

    How windy is it (So Cal so usually light) and how strong are you and your usual crew are something else to consider. Two data points: Barlow 32 - 350 sq. ft genoa. Easy peasy. I was in my late 20/early 30's Andersen 46 - 530 sq ft. genoa. Fast cat that loaded up the sheet fast. Double 10" winch handle. Lots more grunty work. A bit underpowered, but you could stand over the winch and grind so could put whole upper body into it. A #48 or 52 would have been better.
  10. Zonker

    Weather Map Definitions

    I think the general consensus among serious meteorologists is the ECMWF is better than GFS most of the time. Except when it isn't of course. NOAA has been underfunded in past few years and Europeans have had way better model development. Best practice is to check both models and see if they are giving similar results. If they are, the predictions are more believable. If they diverge a lot (say +48/72 hr) then take them both with a grain of salt. I've seen nothing that makes me believe Predict Wind has some magical special sauce poured onto the GFS or ECMWF that beats a whole bunch of nerds and their supercomputers. Especially for areas I've traveled in. Their local models may be better for local racing where they have access to more data (N.America/Europe/Oz). They have a lot of fine testimonials from serious sailors. Lastly you can see ECMWF at Windy.com now. (bottom right corner to change model). Not sure what NAM brings to the table. Never consulted it.
  11. Zonker

    R2AK 2018

    Nice. You'll never go back to gas again...
  12. I like outboards for <40' cats that aren't too far from home. But I like inboard diesels for boats that are bigger and go further distances. I think a 500 n.m. fuel range is a good goal for a long distance cruising boat. The relative fuel efficiency of gas vs diesel motors means you have to carry a lot more gas for the same range vs diesels. Our 40' cat came with 2 x 9.9 Yamaha high thrust. They were great until they weren't. (one threw a rod, one had a cooling system fatal bout of corrosion). Even close to the pitch center of the boat, they didn't like choppy conditions and ventilated badly. Most outboards are designed for fast boats with small props. Only a few are designed with deep reduction gears, extra long legs, and larger props so that limits your choice.
  13. Lots of extra wind drag. Somewhere I did a calculation for BS on the difference between 1/4" wire and 1" tubing and it was not insignificant. Sailing upwind is all about lift/drag ratio. Do as much as you can to lower the bottom number!
  14. Just be aware the boat displacement is one of the biggest lies out there. Multihulls are worse. Most multihulls quote "Light" Displacement with no food/fuel/water/people/payload aboard. In recent years (maybe last 6??) CE has required boat builders to actually weigh representative samples. Suddenly all the French boats got many tons heavier, almost overnight! Builders in other parts of the world are not required, to my knowledge to be accurate. From a 2002 Cruising world review of Fountaine Pajot 46 cat (not a light cat but not a total condo cat either) Disp (light): 21,280 lbs. (9,652 kgs.) From FP's current web site, Saona 47 (really only 45.8' long so similar to Bahia 46) 13.8 tonne (unloaded) So, two cats from the same builder, are 4 T heavier. Yes the Saona has a flybridge/hard bimini. But 4T heavier? 43% Heavier?? So when comparing boats, published displacement, unless CE boats of the past 6 years or so, should be taken with massive grains of salt.. Very generally and feel free to disagree with me: Slow boats are Leopards, Moorings, Lagoons, Seawind Middle boats are current Catanas, FP, Nautitech, PDQ 44 Faster boats are older Catanas, Outremers, some Grainger, St Francis 44/50 (?) Australian boats tend to be fast but overcanvassed with oversized rigs
  15. Zonker

    Rudder refurb and associated troubles...

    Yeah Stoddard solvent/mineral spirits are pretty close to Kerosene chemically so that's why they both are OK drilling/tapping etc aluminum.
  16. Zonker

    Coolboats to admire

    This believe it or don't is a 2018 Yamaha SR400. With a kick starter. No electric starter is offered. Air cooled. Single cylinder, two valves, 7000 RPM. I didn't know they have been making them for a few years already.
  17. Zonker

    Dodger or no?

    Yes, exactly. Otherwise the leading edge of the sliding hatch is a prime spot to get water into the boat. It's hard to seal with just a gasket. You'll find out when you start taking greenish water or even heavy spray on the cabin top.
  18. Zonker

    Lease or Buy

    Haven't you heard of "safety squints"?
  19. Zonker

    Lease or Buy

    Lots of new car tech I don't like: - autobraking. Was driving a rental moving van and it thought I was going too fast as I approached a car at a red light and it braked pretty hard about 1/2 second before I was going to. Thanks I got it van - lane departure warning. Vancouver has a fleet of about 1100 Priusies that are part of a car sharing system called "Evo". I use them occasionally (we're a 1 car family) Newer ones have lane departure warning and flash / beep at you if you stray over a lane marker. Thanks I got it car, I was was just cutting the corner a bit. - Traction control that cuts off the throttle abruptly Things I'd like: - stability control - backup camera Things to watch out for: - sensors behind windshields need re-calibration after a windshield is replaced - steering angle position sensor needs re-calibration after you do a front end alignment Maybe for you, buy a newish vehicle that has a lot of these features, but be prepared to sell it in 3-5 years if something comes along that is a must have, and not just a "nice to have"
  20. Zonker

    Rudder refurb and associated troubles...

    Nothing special about drilling cast aluminum. Currently I am having a fight with my daughter who spent 2 years in the Oz education system and wants to call it Aluminium... Back to drilling - using aluminum cutting/tapping fluid is nice for thick materials like this. In a pinch kerosene is not a bad substitute for the proper stuff if you have some on hand. Anodizing is very nice but may be overkill for something that has managed for 32 years so far.
  21. Zonker

    Rudder refurb and associated troubles...

    Hmm, I agree that it doesn't look like deformation of the surrounding material but the pic is pretty blurry. He needs some special bolts - 2nd row, far right column. Or maybe far left column.
  22. Zonker

    Rudder refurb and associated troubles...

    I would stay away from powdercoating. It looks nice at first, but eventually peels off and leaves lots of corrosion behind. And it will hide any cracks in the metal. The olive paint might have been a chromate type paint which is a good protective layer for aluminum. Marine aluminum is just fine kept unpainted if you keep standing salt water or salt crystals off of it. The elongated holes are difficult - too close to the edges to drill larger size. Elongation suggest that maybe the bolts were loose at some point. I would consider drilling a second set of holes further inboard or outboard of the existing ones. Drill one hole from the mating surface, clamp halves together, use a transfer to punch to mark mating point, unclamp, and drill second half. You can't get a drill in the space when the halves are together, thus this method. And use nylock nuts on the bolts too.
  23. Zonker

    Pros and cons of sailing to see the world vs other means.

    No particular issue other than excessive fees (bribes) that are sometimes requested by local officials. Maldives is very costly ($1000/2 months) but those are all official government fees. Madagascar we had to pay a few fees that were clearly unofficial but they were small. Theft can be an issue in some parts of the world, but usually these areas are well known. Read www.noonsite.com a few countries ahead. Personal violence is rare and piracy areas are very well known as well.
  24. Zonker

    Pros and cons of sailing to see the world vs other means.

    I have to say we sailed around the world and highest sustained winds we saw were around 25-30 knots for a few days, a few times. So not even a gale. We were better than most at amateur forecasting & conservative about the weather and I think that really helps. We did not look at wfaxes and GRIBs and "hope" that the best forecast would come true. I do not count squalls which come and go very quickly, nor winds at anchor (where we saw a few times 50+ and once 85+ knots). We did not hang around hurricane areas during hurricane season. A trade wind circumnavigation is usually pretty benign. You get in trouble getting out the tropics (W Coast of Oregon/California, Bay of Biscay, approaching S.Africa, to/from NZ)
  25. Zonker

    Pros and cons of sailing to see the world vs other means.

    We just tell them we anchor for the night.