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  1. Replies
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    September is as fine a time as any but it is safe...

    September is as fine a time as any but it is safe for me to say. We are making plans to visit children and grandchildren next September in Tanzania. If competing plans can be accommodated, we'll see...
  2. Thanks for the reports and the photos! We're...

    Thanks for the reports and the photos!

    We're sorry weren't able to make it. Our Karen Ann would have been a nice addition to the herd photos.

    327193

    Next year!
  3. Have a GREAT weekend! We'd love to be there...

    Have a GREAT weekend!

    We'd love to be there to enjoy the sailing, food, coffee, beer and comradery. Take and share lots of photos!

    Safe travels to all.
  4. Apologies for the delayed response... After...

    Apologies for the delayed response...

    After reviewing the summer's travels, the condition of the yard & house (somewhat neglected this summer), planned travels later in the fall and the amount of...
  5. Although time marches on, timing is everything......

    Although time marches on, timing is everything...

    Seneca Lake sounds like a great venue for a Goat Gathering. We're interested in joining in the fun (Seneca Lake is about an 8 hour drive from...
  6. Thread: Box Boom Update

    by BobWes
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    My latest box-boom (assembly completed over a...

    My latest box-boom (assembly completed over a year ago but, alas, not yet tested on Karen Ann) measures 45mm x 75mm, tapers to 45mm x 60mm forward and to 45mm x 45mm aft; top and bottom are 12mm...
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    I'm pretty sure I don't understand what happened...

    I'm pretty sure I don't understand what happened either.

    If BH-3 was installed too far forward, how did that affect the hull shape, particularly the bottom? And, if the installed BH was removed,...
  8. Thread: Box Boom Update

    by BobWes
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    Beaton1, Thanks for the explanation and photos -...

    Beaton1,
    Thanks for the explanation and photos - they helped clarify my understanding of the concept.

    Maybe you could build a boom with this technique to compare with other boom designs. How...
  9. Thread: Box Boom Update

    by BobWes
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    Sorry, Beaton1, I'm not understanding your...

    Sorry, Beaton1, I'm not understanding your concept at all. I'm not familiar enough with veneers to be able to visualize what you are describing, so I am certain I am missing something here.
    ...
  10. Thread: Box Boom Update

    by BobWes
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    5,804

    Beaton1, Are you familiar with birdsmouth...

    Beaton1,

    Are you familiar with birdsmouth construction?

    http://www.duckworksmagazine.com/04/s/articles/birdsmouth/#remind-me

    Seems that your veneer concept is along the lines of the...
  11. Thread: Box Boom Update

    by BobWes
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    ...sorry, I meant Clint not Cliff...

    ...sorry, I meant Clint not Cliff...
  12. Thread: Box Boom Update

    by BobWes
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    5,804

    well, darn... I just lost my response to Cliff......

    well, darn... I just lost my response to Cliff... let me try again...

    Your proposed box-boom is similar to in size to the box booms I've built.

    My first one was 45mm x 65mm, 6mm ply sides, 16mm...
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    Karen Ann's Sailing Adventures

    It wasn't epic, but yesterday's light air sail included a circumnavigation of Strong's Island at the north end of Lake Huron. Strong's Island is privately owned and there is no place for to land a...
  14. Oh, no! Not - GASP - Michigan! :) Could...

    Oh, no! Not - GASP - Michigan! :)

    Could happen. Next year's calendar isn't filled up yet...

    Figure out a time and place and we'll (Jan and I) see what we can do to be there.
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    Sort of but not really... How do you know when...

    Sort of but not really... How do you know when enough is enough? What load? How do you know when it stops stretching at that (whatever) load?
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    Duckworks. Duckworks Boatbuilders Supply -...

    Duckworks.

    Duckworks Boatbuilders Supply - Hardware

    RL-690 gudgeons in the appropriate size on the rudder case.

    RL-490 gudgeons on the transom.

    Line them up with a pin.
  17. The edges were rounded over today. The butt...

    The edges were rounded over today. The butt joins still need fairing but the yard is shaping up nicely.

    This is a "monster" boom weighing 4.55 kg (10 pounds). Compared to the Karen Ann's boom...
  18. Main Boom: The 9mm sides have been glued to the...

    Main Boom: The 9mm sides have been glued to the frame and cut/trimmed to shape using a trim router with a flush cut bit.

    The edges need rounding over; the plywood butt joins need some sanding and...
  19. Thread: Cool stuff

    by BobWes
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    Saw this late today. Haven't seen it before. ...

    Saw this late today. Haven't seen it before. Interesting, sort of...

    Introducing mxNext - YouTube
  20. Hey, c'mon... I'm on that variation of "Island...

    Hey, c'mon... I'm on that variation of "Island Time" known as retirement... Things get done at my pace... :)
  21. Thanks Mik, You're able to explain what I...

    Thanks Mik,

    You're able to explain what I somehow knew intuitively (well, I like to think I knew it intuitively) but as far as being the GIS boom-meister... I dunno... :)

    This is boom #4. ...
  22. The main boom frame is glued up. Not much to...

    The main boom frame is glued up. Not much to tell as it went pretty smoothly - no spilled epoxy, no giant globs of goo where they shouldn't be (hey, I even put wax paper under the frame to keep from...
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    In my opinion, yes.

    In my opinion, yes.
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    The grommets at the corners are #4, 1/2" The...

    The grommets at the corners are #4, 1/2"
    The grommets for lacing the sail and reef points are #1, 5/16"

    The grommet tools I have came from SailRite as a part of a package deal when I bought the...
  25. Engblum, Once it is glued up, I'll measure...

    Engblum,

    Once it is glued up, I'll measure the stiffness of the boom frame and let you know how it compares to the completed boom (with ply sides).

    While the weather is warming, 38° F in the...
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    Mik, I sewed a SailRite kit. I'll see if I...

    Mik,

    I sewed a SailRite kit. I'll see if I can find the specs & info that came with the kit, scan it and email it to you - but can't do that until tomorrow.
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    "Pinus"... I knew there was another part of the...

    "Pinus"... I knew there was another part of the name... Thanks, Dave!
  28. I agree with Dave, there is no design consensus...

    I agree with Dave, there is no design consensus for a box boom design beyond "light and stiff."
  29. There is no particular plan for the holes. They...

    There is no particular plan for the holes. They are intended to reduce weight by however a small amount.
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    It is radiata (I'm sure there must be another...

    It is radiata (I'm sure there must be another name to go with that). It is also known as Monterrey Pine and it is nice to work with. I built my GIS mast with it.
  31. After getting the spar table to a functioning...

    After getting the spar table to a functioning state (topped with 16' of 3/8" ply), I dry fit the top, bottom, plugs and spacers for the boom. The photo is looking forward along the boom. There is...
  32. Things are warming up a bit here so I've been...

    Things are warming up a bit here so I've been slowly returning to work on my Pathfinder.

    First things first: A new spar bench is under construction. Three sawhorses, two 2x10x10' planks, some...
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    Page 24 of the plans. "Make a Stem" provides the...

    Page 24 of the plans. "Make a Stem" provides the necessary dimensions and a drawing.

    I stared at that for several days before it dawned on me that Fig. 7 has it all. Keep staring, it'll come...
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    What kind of glue are you looking for? What...

    What kind of glue are you looking for?

    What kind of glue is added to epoxy?
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    The zip-lock baggie method works okay if you mix...

    The zip-lock baggie method works okay if you mix the resin/hardener in a container before putting it in the baggie. Yeah, there is an extra step but the method has its moments.
  36. Mik advocated 4mm ply back when we started...

    Mik advocated 4mm ply back when we started messing around with box booms. I didn't have any 4mm ply then - and I wasn't going to go buy a sheet just to experiment - but I did have enough 6mm ply on...
  37. Oh, okay... guess I should ask for specifics...

    Oh, okay... guess I should ask for specifics before offering generalized suggestions. :)

    Looking forward to your progress. I'll try to document what I'm doing with my spars, too.
  38. Uh, the cedar was 12mm, not 10mm, just pointing...

    Uh, the cedar was 12mm, not 10mm, just pointing that out to make sure you don't get too crazy planing you DF.

    Have you measured the moisture content of that DF with a moisture meter? I'm no...
  39. Photo of the original box boom (aft end closest)...

    Photo of the original box boom (aft end closest) :

    http://farm9.staticflickr.com/8386/8542878150_65a798eee2.jpg
    DSCF4665 by bob.wessel, on Flickr

    Photos of second box boom:

    Note the knots....
  40. Dave, There wasn't much taper in my original...

    Dave,

    There wasn't much taper in my original box boom. I'll see if I can find a photo or two showing what I did.

    Paulie,

    The original boom used cedar fence boards - which was pretty...
  41. I'm about to begin building the spars for my...

    I'm about to begin building the spars for my Pathfinder build so your thread will be good for me, too!

    My GIS sail is set loose-footed with mid-boom sheeting.

    My original box boom was 6mm...
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    Just a thought: What kind of wood are those...

    Just a thought: What kind of wood are those center staves? A Japanese pull saw and a block plane would make quick work of trimming one of them.
  43. Plantation grown radiata is fine. It mills,...

    Plantation grown radiata is fine. It mills, glues and fastens well.
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    Is there a reason not to use hardwood on the...

    Is there a reason not to use hardwood on the leading edge, you know, the way Mik designed it?
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    Congratulations, Dave! Army Brat (aka something...

    Congratulations, Dave! Army Brat (aka something else) looks great.

    I'll have to plan an East Coast trip to see all those Goats in the NE.
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    No, there wasn't much opportunity to change out...

    No, there wasn't much opportunity to change out booms to see how each affects sail control and trim. Maybe next time.

    Mik's presentation about lug sails was very entertaining and informative. ...
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    1,900 miles later and I'm back to central...

    1,900 miles later and I'm back to central Michigan after a great extended weekend at SailOK. The weather was cold, wet and windy - bad enough that no one sailed on Friday or Saturday. Thursday was...
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    Cedar is a soft wood and, yes, it dents easily. ...

    Cedar is a soft wood and, yes, it dents easily. But it is light and it is strong.

    I used Western Red Cedar on the frames, dagger-board case framing, dagger-board staves (with hardwood leading...
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    Posted by keyhavenpotterer (post #103) in a WBF...

    Posted by keyhavenpotterer (post #103) in a WBF thread discussing, in part, lug sails, masts and turbulence:



    Link to the thread: A fishing, cruising, racing birdwing SCAMP - Page 3

    Not sure...
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    Good luck with the experimentation and problem...

    Good luck with the experimentation and problem solving.

    I thought the "bad" or "dirty" tack had the boom/sail to windward of the mast. I mean, the wording isn't really all that critical - it...
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