Sweare Deep

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  1. Sweare Deep

    Lewmar HTX Genoa car

    This seems to be a common problem with these cars. I wish I could help with a part number or any useful information from Lewmar. The first time I saw this failure was while we were doing a sea trial on a just launched boat -- I think it may have been its maiden sail. On that boat it was the mainsheet traveller car that spilled its balls. On my boat -- not the same as the boat mentioned above -- it happened to the jib cars during our first race, but I was able to get two new cars under warranty, which gave me a couple of spare end caps. Since then, I have bought an additional pair of cars with slide rods rather than balls. Lewmar must surely be aware of this problem.
  2. Sweare Deep

    Battery system upgrade?

    The Nordkyn VRC-200 allows you to keep your existing alternator (and its internal regulator) while achieving a managed charge profile that would otherwise require an external regulator. It does this by using the Vsense connection to fool the internal regulator. It's a much simpler upgrade than installing a new alternator and external regulator.
  3. Sweare Deep

    Battery system upgrade?

    Or consider this: http://nordkyndesign.com/product/nordkyn-electronics-vrc-200-charge-reference-controller/ Though before going that route, check carefully what your alternator does when it loses voltage sense, which is how the VRC-200 handles charge disconnect from your BMS. Different versions of the Mitsubishi 115A alternator behave differently. Lots of good stuff one that site.
  4. Sweare Deep

    The blight of generators

    We had an otherwise idyllic evening three weeks ago anchored between Devil and Bold Islands, Merchant Row, Maine rudely interrupted by a catamaran running its genset all evening. Why is it that those who motor most (powerboats, followed by sailing catamarans, followed by sailing monohulls) and so have the most opportunity to charge their batteries underway seem to be those who most need to run a genset? Over 17 days, we ran our engine for battery charging for about one hour in total, that being a day when it rained.
  5. Sweare Deep

    Main Halyard Line Choice

    Ordered some new cover from APS today (discounted as part of their getting out of sailing clearance) which should do the trick as the core is just fine.
  6. Sweare Deep

    Main Halyard Line Choice

    Many thanks -- I think Mark has nailed the problem. The lead in angle is indeed low so the incoming line contacts the skirt of the drum. Would be very hard to do anything to change that, so a new halyard after four seasons seems the simplest "solution." However, I'll go with something less spendy than Poly Tec.
  7. Sweare Deep

    Main Halyard Line Choice

    Yes, we’ve done the trailing the halyard behind the boat trick, which is good for working out hockles (when someone has coiled it incorrectly) but does nothing for this problem. i completely agree about people making pretty round loops — drives me nuts. As you appreciate, a correctly coiled line naturally adopts a figure of eight. One thought is to take the cover off and put it back on, but with a 170 feet of halyard that’s not as easy as it sounds.
  8. Sweare Deep

    Main Halyard Line Choice

    My current main halyard is 12mm (½") Lyros Pro, which is a polyester cover over an SK78 core. The halyard feeds through a Spinlock XXA clutch to a Lewmar 50 electric winch. Over the course of four seasons the cover has become twisted around the core forming a helical ridge in the cover. As a result it is now hard to feed the halyard back out when dropping the main. I suspect the self-tailing mechanism is responsible, especially since the wavelength of the helix is comparable to the circumference of the self-tailing mechanism, i.e. one full twist for once around the self-tailer. I do not believe it is due to poor coiling of the halyard tail -- we're careful to coil properly, and besides we usually just leave the tail on the cockpit floor or throw it down the companionway. My question is two fold: have others seen similar behaviour, and which line would you recommend in which the cover rotates less freely about the core? Would Polytec SK78 be a good, though rather spendy, choice?
  9. # If anyone wants a motor mount for an Avon Redcrest, I know of one that’s available for the taking beneath Seal Bay, Vinalhaven, Maine. Fortunately, there’s a place in Portsmouth (UK) that still sells them. The problem, of course, with single-floored inflatables is that as soon as one steps aboard one has soggy feet. We’re much happier campers with our inflatable-floored Achilles, and less at risk of trench foot.
  10. I have an Epropulsion Spirit 1.0 and would never go back to a gasoline outboard for the cruising that we currently do in coastal New England, mostly in Maine. When we head further afield (Caribbean and beyond) we may have cause to rethink that. That said, don’t underestimate the demands of recharging the 1000 Wh battery while away. With a 12V system on board the mothership that’s about 80 Ah to recharge.
  11. Sweare Deep

    College-level class on sailing

    For several years I taught a Freshman Seminar on the Science of Sailing. After a hiatus of a few years, I will teach it again this coming term. The aim of my seminar is in part to show the students how to use physics to understand problems in a real world setting rather than simply regurgitate the solution to highly-contrived AP style problems. Students are often very ill at ease with making simplifying assumptions to render a problem tractable, because that's not what they've been taught to do, yet that is at the very core of much scientific work. Further, for better or worse, sailing seems to have attracted a number of articles which are simply wrong, and so it provides some good examples to show students that they shouldn't necessarily take the literature at face value. My seminar works best with a mix of students, some very well-prepared in physics, some from the sailing team, and some bringing both. As my seminar is heavily over-subscribed I can pick a well-balanced class. Finally, I'm toying with the idea of writing a book based on the seminar because there's nothing out there that I've found that really captures both the content and the spirit of my seminar. "The Symmetry of Sailing" by Ross Garrett is certainly one of the better books.
  12. Sweare Deep

    XP-38 vs Salona 380?

    If you’re looking at those two boats, you should probably look at the Dehler 38, too, if only to explore the cost-build trade-off more fully.
  13. I'm curious as to how this gift to the sailing program was actually made and accepted. Even a low six figure gift, especially coming out of the blue, would cause some questions to be asked by the development office ("does the donor have a child in the applicant pool?" being among the first, an affirmative answer to which would lead to the gift being refused), followed by a little due diligence on the donor. I'm sure Stanford is looking at the chain of approval in its development office that led to this gift being accepted. The sailing coach may not be the end of this story.
  14. Sweare Deep

    Brooks & Shithouse

    I have the following B&G setup: H5000 Computer H5000 Pilot Computer H5000 Pilot Controller Pilot Remote Rudder Reference Vertical MHU 4 x H5000 Graphic Display 2 x Zeus MFD ZG100 GPS RC42N Rate Compass V50 VHF + H50 Remote DST In three years (after dealing with two items that were DOA), I've had a single failure (the PCB in the Vertical MHU), possibly due to nearby lightning. No complaints here.
  15. Sweare Deep

    Nine foot draft in New England?

    We draw just under 9' and have not found that limiting, cruising from Casco Bay to NE Harbor, with plenty of time spent around Muscongus Bay and the midcoast. An exception was The Basin where we waited for half tide as there's a shallow spot on the bend. If you mess up, you'll hit many of the same ledges whether you draw 6' or 9'. Agree about depth finders.