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MartinRF

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Everything posted by MartinRF

  1. Yes, the Baltic Sea is known for not destroying old wrecks. The same goes for the Black Sea I understand which means there is a real possibility of finding ancient Greek mercant ships, Bysantine vessels... If you ever visit Stockholm this museum is a mandatory thing on yout to-do list: https://www.vasamuseet.se/en /Martin
  2. So what strings did you recommend to hold his rig up? /Martin
  3. A comparison I did when the Seacart 26 was new and my Tennant cat was almost 30 years old: There is not much difference in weight according to rating certs I have seen. The new boat is the heavier one... There was a Seacart 26 moored in my marina briefly but I never saw it sail and had no chance to compare pace. /Martin
  4. Depends on what you think /Martin
  5. Buthyl rubber sealant has work fine for me. Applied in 1986, still no leaks in 2019. I don't know what brand name but this looks right: https://www.ebay.com/sch/i.html?LH_CAds=&_ex_kw=&_fpos=&_fspt=1&_mPrRngCbx=1&_nkw=butyl+rubber+sealant&_sacat=&_sadis=&_sop=12&_udhi=&_udlo=&_fosrp=1 This stuff neither cures nor dries out. It is still soft and sticky. /Martin
  6. Teflon bonding anecdote from my distant past: Some electronic boards are made from Teflon and back in the late 1980s I needed to create a multilayer Tefon board. I used a product from 3M for this. It was thermoplastic bond film: Put a piece of it between the two Teflon bits you want to joint. Add pressure and increase temperature (no, I dont remember how much) and wait for a while (no, I don't remember for how long). It was pure magic. I did a test run and trying to pry the teflon parts apart I broke the teflon but not the bond. 3M sold this product and anything related to printed
  7. I hope the outer diamonds are fixed to the spreader tips. It is not unusual to overlook this important detail. It does not replace an inner forestay but is important anyway. The actual staying does not look overdone to me but there is a lot of other things adding clutter and drag. Lazyjacks, halyards etc, some of which will be out of the way when sailing. /Martin
  8. Somewhat related: Many years of marine biology research resulted in finding a substance that 'tells' barnacles "not here" without harming them (it is claimed). Now this substance is used in at least two brands of antifouling paint. The Danes have just started marketing their paint to the pleassure boating market -- at least here in Sweden. The substance they use is marketed by this company by the name Selektope: https://selektope.com/ /Martin
  9. Well, there is always that thing called fire... Happened to Swedish Seacart 30 some years ago and swimming for the shore wasn't an option. I don't remember what saved the crew but it was not a pleasant experience. /Martin
  10. So to sum up: No good. ? Myself thinks: * Why only 5 m BOA (I fly a hull in 10 knots of wind with me on the windward side)? * Will that centre beam really take the fore-stay load with low enough deflection? * Low, inverted bow profile is very 'modern' but also very impractical. * Surprisingly high weight estimate for being found in sales material. Maybe honest * That centre beam is designed with no intention to use it for sealing the foot of the sails. A missed opportunity. /Martin (living in Sweden so buying a 8.5 is not in the books and besides, I am still pretty happy with
  11. Tony Grainger: https://www.graingerdesigns.net/cats/livewire-28/ Thoughts? /Martin
  12. Must have been discontinued decades ago. Mine is 30+, maybe 40 years old and it is broken so don't ask me to send it. /Martin
  13. The interior looks positively palatial to me. /Martin
  14. Last year (I think) BBC did a documentary of the clubbing scene in Bristol (UK) with a focus on immigrants from the Caribbeans. Centre stage was taken by an establishment run by one Tony Bullimore. There was no mentioning of sailing but a little research later I found out it was the same Tony Bullimore. I sent the link to the article to an English friend who is really well connected in the world of sail racing and he replied: /Martin PS Carbon Tiger is a custom built Farrier 33 trimaran now sailing in Swedish waters. Back then she was in the south of England.
  15. Interesting, Brett Burvill's older brother Hayden won a regatta I helped arrange in Sweden in 1990. I believe Brett was one of the very first people to experiment with foils on Moths. Who is building Tornados these days? /Martin
  16. Thanks, I enjoyed it despite my French being less than minimal. /Martin
  17. Photos of T9 interiors make me believe the main beam is for supporting the mast only as it does not penetrate the hulls fully. If this is the case and you have a 'floating' dolphin striker there are no bending loads on the main beam, only compression. The attachemnt points of the dolphin striker strap would be the only high-load spots. As you may have seen on my web we re-engineered this on our Spyders. The mid beam may be for secondary loads only, like carrying the aft end of the motor pod. It depends on how it is attached to the hulls. If so it will only see low loads. This leaves wi
  18. Background to my questions: * A complete seal -- inside and out -- is best. Epoxy is pretty good moisture barrier in my experience. * Epoxy does not offer much protection from UV and it is vulnerabel itself. In my experience the wood below the epoxy degrades quicker than the epoxy and eventually mini-cracks deveop in the epoxy barrier when the wood-epoxy bond is gon. Hence painted on all exposed surface is recommended -- a recommendation I have not followed myself and the clear finished areas are the ones that have generated most maintenace work. Clear finish on the inside is a goo
  19. Unless the Isomat NG-37 is strong enough on its own. Do you have the construction drawings or can someone else inform us on the dimensions of original front beam? /Martin
  20. Epoxy only for laminating or also for sealing the wood surfaces? Clear finish or painted? Dagger boards and rudder blades are built how? Aluminium cross beams? Sleeved? How old? Smaller sister: http://hem.bredband.net/b262106/ /Martin
  21. How thick is this board? How far out will you stand? /Martin
  22. MartinRF

    Dyneema Rigging

    Added question: How do I know it is replacement time? /Martin
  23. I vote for PE or Nylon fishing nets. http://hem.bredband.net/b262106/pages/trampolines/index.html /Martin
  24. The composite beams started out with a composite dolphin striker. We designed and built them because the alu beams were not up to the job -- wracking while sailng in waves bent the fore beam. It happened twice despite beafing up that beam after the first time. Later I came in contact with a Belgian Spyder owner who broke his fore beam and an American whose dolphin striker ripped out of the main beam. Not fun but it was this we feared would happen when we saw the drawings. Hence, the change in dolphin striker design. The the job market made me move from my native Gothenburg to Stockholm and
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