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Type: Posts; User: Todd Bradshaw

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  1. Replies
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    Re: Bombproof Daggerboard Case?

    There is also the concept of the circular daggerboard. Kicks up (rolls up) if you hit something, but only requires the smaller, daggerboard-sized hole in the bottom.
    ...
  2. Thread: Bubbles

    by Todd Bradshaw
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    Re: Bubbles

    (1) Ditch the acetone. Though there are a few cases (like oily teak) where acetone can help remove natural oils prior to glassing for a better bond, it (and other solvents) are generally more likely...
  3. Re: Looking for the name of a certain jib arrangement...

    Probably, especially considering the increased stability of modern cloth (not only stability from tack to tack, but also from day to day or year to year as it ages). If you are willing to have longer...
  4. Re: Looking for the name of a certain jib arrangement...

    Yes, it's true.


    You were told wrong. Light cotton or linen sails, even as far down as 25 sq. ft. normally were built with roped clew corners to help to control drastic bias stretch. That...
  5. Re: Looking for the name of a certain jib arrangement...

    This simply is not true. To start with, there is no reason you would need to "spread the load at the jib clew" in that fashion on any jib made from either natural or synthetic cloth or in any common...
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    Re: New Sails for Lyova-Marie

    The 5/16" machine-sewn has a decent chance of doing the job and will usually make for a great looking boltrope with some tension on it. However, when it comes to being able to really fine tune the...
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    Re: Grey lady down grey lady down

    I have a Fein, and it's a good vacuum and pretty quiet, but in terms of serious power, it can't hold a candle to my old Craftsman monster.
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    Re: New Sails for Lyova-Marie

    With light behind them, a 3.9 oz. mizzen will look a bit lighter in color than a 5.53 oz. main, if that matters. We can also consider that since all four corners of these sails are held out by the...
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    Re: New Sails for Lyova-Marie

    A few general comments in no specific order:

    - Sail shaping using edge round and broadseaming is never an either/or thing. They need to work together to both create and position the sail's draft...
  10. Re: Line-Lok cleats for standing rigging on small sailboats

    Actually, the shrouds on a lot of Norse boats were cleated. The shroud itself would terminate a bit above the gunwale with an eye and the cleating system would be set up as an inverted "V" of line,...
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    Re: Scottish Affairs

    That's pretty neat!

    Here is a good time waster. You can design your own family tartan and if you want, they will weave it for you.
    http://www.scotweb.co.uk/tartandesign/design/

    Here is my...
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    Re: Hey Todd B!

    The 2.4 is a couple feet longer than the Mini-12's and is about the only class of these little boats that seems to have much staying power. The others were all one-designs.

    I found a few seconds...
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    Re: Scottish Affairs

    This one has the daughter of a gal I went to high school with.


    http://www.youtube.com/watch?v=_e--gRPnw5w

    She sings with a group called "All Angels"
    ...
  14. Re: Alternative Epoxy thickeners / fillers

    I don't necessarily think he's crazy, but the different common fillers for epoxy have certain characteristics that make them good choices (or not) for specific jobs. Those mentioned would all tend to...
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    Re: Hey Todd B!

    Very nice setup! Add a few buoys to put out a little match racing course and you would have yourself a fun afternoon in the making. I still think that of all the boats I've ever sailed, my Mini-12...
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    Re: Resorcinol Resin and carbon fiber

    Considering that there are boats in the 40 year old range running around which are held together with only WEST Epoxy I'd be interested to know what sort of brittleness you're experiencing. As long...
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    Re: Plywood and epoxy

    I disagree, and maintain from building and using cored-construction composite and wood/composite boats for better than 40 years that your conclusions are wrong. A thin layer of fiberglass skin can...
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    Re: Plywood and epoxy

    Sure it does, but unfortunately, your experience didn't teach you anything about why it breaks last. It is not the compressive strength of that thin layer of glass on the top of your test strip that...
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    Re: Plywood and epoxy

    That depends how you use them. It may be stiffer if used in equal thickness, but it absolutely isn't even close when used the way we are using it here. If somebody wants to build a dinghy from 1/4"...
  20. Re: Scarfing a gunwale, then rabbeting the entire length?

    If the grain is decently straight the pine should work and be strong enough, but outwales get banged on docks, racks and other stuff and harder wood holds up better to the everyday knocks. If you...
  21. Re: Scarfing a gunwale, then rabbeting the entire length?

    Yes, pine outwales tend to get beat up pretty quickly. I've generally found that the middle of the boat is not a very good place to have a scarf. It's always under pressure from the hull curvature...
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    Re: Old Fiber Glass

    You don't completely, but just work carefully and do the best you can. It will tend to ravel more on places where the cut edge follows the weave than it will on places where the cut is diagonal to...
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    Re: Plywood and epoxy

    What does graphite have to do with it? If you can build a boat without stiffness, that's a pretty good trick. You mentioned boats being built with just glass and taking advantage of it's compressive...
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    Re: Plywood and epoxy

    Yes, but when they really need stiffness on a fiberglass boat is most often done by adding a core material. The other option is to build layers of glass and mat up to a pretty massive thickness,...
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    Re: Plywood and epoxy

    If your plywood is prone to checking over time, which is very common on fir plywood, marine or not, a layer of fiberglass and epoxy with a fairly high glass to resin ratio is often going to be most...
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    Re: 7" grinder/polisher vs 6" DA sander

    Gee, I've been using one since 1972 and haven't been killed yet. Can you tell me when I should expect this to happen?



    My old Black and Decker industrial grinder runs 3450 rpm. I use it on bare...
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    Re: Tarring hemp

    If you are seriously thinking about tarring a boltrope you also have to consider what it does to the handling characteristics of the line. You don't just sew rope to the edge of a sail and be done...
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    Re: thunderbird #2

    The color is Thunderbird blue (as in Ford Thunderbird). It's one of those colors that tends to be pretty questionable on a car as well - you can't miss it, but you're not at all sure you like it.
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    Re: Tarring hemp

    Why do you want to tar the roping on a sail? It's just going to get all over it (and you) when you use it and it will make sewing the roping on a real pain in the ass. I could possibly see hemp on a...
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    Re: Old Fiber Glass

    It could be done, but I'm not sure it will make you more efficient. If you store the proper amounts of resin and hardener in separate tubs and mix them as you go, you will need to be quite meticulous...
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    Re: Mainsheet rigging questions

    Traveler and vang are for sail twist control. Easing the base point of your mainsheet system outboard on the traveler, making it more vertical helps to reduce boom lift and upper sail twist when...
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    Re: Mainsheet rigging questions

    The traveler's primary advantage is going to be more for sailing off the wind than when trying to sail close to weather. When you're sailing upwind with the main trimmed in tightly it is mostly the...
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    Re: Old Fiber Glass

    Yes, you should always patch fiberglass by putting the smaller patch on first, then the larger one. It reduces the amount of excess resin in the patched area and will also go a long way toward...
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    Re: DWI repeaters

    We heard on the local news the other day of a 13 year-old who had been arrested for DUI for the second time in about a week. Obviously some fine parenting going on in that family......
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    Re: Old Fiber Glass

    Wash the blush off in cases where an application of resin has been sitting for a while, and before you sand. If you are doing something like adding filler coats in rapid succession (like adding the...
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    Re: Old Fiber Glass

    That's pretty much the plan in a nutshell. The only good thing about the bald spot is that it was coated with resin. This makes it much harder than bare wood, so you are less likely to dish the...
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    Re: Old Fiber Glass

    Wow. A combination of lousy workmanship and stuff that just doesn't make sense! Too bad the builder never bothered to just read the directions. First of all, fill that crack, and any others with...
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    Re: Looks pretty fast to me

    Iceboat runners are sharpened to a 45 degree bevel on both sides (a sharp "V" when you sight down the runner) with the tips and tails "detuned" (dulled) slightly to keep them from biting in too much....
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    Re: Toronto Harbour Iceboat

    Interesting, but they're dreaming if they think that thing is going to go 100mph (which they claim in their hype). It also shares the same problem that stern steering iceboats have had for a century,...
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    Re: Plywood Canoe Concept - Birchbark Style

    The problem with any aluminum that would come in at a decent weight is going to be hull stiffness. The hefty keel extrusion and cross ribs in a Grumman or similar aluminum canoe are critical...
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    Re: Composite mast reinforcement

    That's an awful lot of crap to go through just to hang up a 60 sq. ft. lugsail. I'm with Thorne. It would be easier, quite possibly faster, cheaper, and probably just as effective to simply build a...
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    Re: Plywood Canoe Concept - Birchbark Style

    It appears to be pretty much standard birchbark-style construction, with the plywood substituting for the bark and the additions of some goo in tubes for calking and gloss varnish. A building bed is...
  43. Re: Can we create new terms / definitions of "strip planking" / "stripper" constructi

    If I'm trying to be clear, I'll usually call it wood strip/fiberglass. However, it's not going to do any good. Sprit and sprit-boom are still constantly misrepresented here and I've been trying to...
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    Re: Photo software allowing text

    I just do it with Photoshop Elements 10, which wasn't horribly expensive.
    Some examples:
    First a pretty quick and dirty, basic one: ...
  45. Re: Ever had a paint that doesn't seem to quite dry?

    Some latex will do that, where others are bone dry in half an hour. In our experience, the kitchen, bath and cabinet semi gloss, more water and ding resistant ones are the worst. Also some of the...
  46. Re: What model outbaord would you buy new? (for Simmons 18')

    A friend and I once disassembled and rebuilt an original Simmons 18 (new bottom, deck, motor well and steering console and stripped and refinished everything) and he put a 4-stroke Yamaha 25 on it....
  47. Re: A little experiment -cut-down windsurfer mast on the skerry

    Little Idea, the most critical factor on lugsails is usually generating and consistently maintaining sufficient luff tension, since the luff is not directly connected at both ends to the mast. A mast...
  48. Re: A little experiment -cut-down windsurfer mast on the skerry

    The mast can, but that lugsail luff probably won't like it much, and the sailshape is likely to be terrible.




    It all depends on how the sail is rigged and cut. A sail with a luff which...
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    Re: Spinnaker for my Acorn 15

    If it already has the typical balanced lugsail, I can't imagine that adding a chute, drifter or similar is likely to work very well. It will probably spend much of its time in the shadow of the lug...
  50. Re: Stripper kayak with other than cedar...choices?

    How sure am I? Well, I'm certainly sure enough that I would never, ever build or buy a hardwood strip canoe (or one with a lot of hardwood "feature strips") for that and the other reasons that I have...
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