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  1. Replies
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    I cut panels with a Japanese hand saw. They cut...

    I cut panels with a Japanese hand saw. They cut an accurate 0.5 mm kerf, it's easy to cut a fair curve, so I cut right on the line, no planing or sanding required. Quicker than the jigsaw followed...
  2. We had a beat to windward in light conditions,...

    We had a beat to windward in light conditions, around a small headland to a beach for a picnic. Return a couple of tacks to get out of the bay then a run back to our starting point.

    Map here: ...
  3. Pictures here: Lake Wakatipu, Kelvin Heights...

    Pictures here:


    Lake Wakatipu, Kelvin Heights area:


    https://dl.dropboxusercontent.com/u/10731244/PC170033.JPG

    All those below are from a day trip from 12 Mile Delta to Bobs Cove and...
  4. Family Sailing / Goat and Sooty Tern sailing together

    Hi All, have been away from this forum quite a while. Built a Goat about 5 years ago. Just posted some pictures of sailing on Lake Wakatipu (Queenstown New Zealand) on the WBF.

    Might copy some...
  5. Thread: GIS Yawl

    by IanHowick
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    115,432

    There have basically been two approaches to the...

    There have basically been two approaches to the yawl rig modifications. Clint's as detailed above, which involves putting an extra mast position foreward of bulkhead one and putting the mizzen...
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    Hi Allan, I'll try and dig out links to...

    Hi Allan, I'll try and dig out links to threads/posts where I detailed how I boxed in the middle seat. Posts must be 4 years old or so, but are hopefully still accessible. My middle seat is more...
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    I'm not sure you'd run out of displacement as Mik...

    I'm not sure you'd run out of displacement as Mik said. You're talking solo camp cruising right? Mik's Texas 200 experience includes supplies and camping gear plus a Texan as well, if you are...
  8. Thread: Racing Goats

    by IanHowick
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    2,458

    Brilliant! I take it you race solo. By...

    Brilliant!

    I take it you race solo. By choice/necessity/because it's faster? Are you ahead of the pack in some conditions and not others? (wind/water state/going to windward or downwind).
    ...
  9. Thread: Cool stuff

    by IanHowick
    Replies
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    31,238

    Hi Woodeneye, meant to post to this, but have...

    Hi Woodeneye, meant to post to this, but have been quite busy.

    Boat related things to make on a 3D printer:

    Swivels for a competition style oar set-up:


    As designed:...
  10. Thread: Cool stuff

    by IanHowick
    Replies
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    31,238

    Which end would be the bow, Bruce? I'm...

    Which end would be the bow, Bruce?


    I'm curious as to the lessons coming out of the current crop of AC72 cats, and whether that will trickle down to other boats. The Moths and the foiling set-up...
  11. Thread: Cool stuff

    by IanHowick
    Replies
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    31,238

    Damn, I should have made my Goat's centreboard...

    Damn, I should have made my Goat's centreboard slot wide enough to take a laser centreboard! Is that wing on the bottom of the centreboard just attached to a normal laser centreboard or is the whole...
  12. Thread: Cool stuff

    by IanHowick
    Replies
    172
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    31,238

    Hi Woodeneye and Mik Do you see this current...

    Hi Woodeneye and Mik

    Do you see this current foiling technology on the AC72s moving down to smaller boats?

    The Moths have been foiling for quite a while now with the variable pitch horizontal...
  13. So what is it Bruce? A device to keep at home...

    So what is it Bruce?

    A device to keep at home to train you hiking out muscles?

    Or a wing to attach to the Goat for hiking out?

    I'm curious...

    Ian
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    I think what you say above is pretty much...

    I think what you say above is pretty much correct, though I get a little lost by the bit I've highlighted in blue. Traveller position is all about getting the twist right.



    I think you...
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    That might be getting a bit big for a balanced...

    That might be getting a bit big for a balanced lug rig? I can see why you're thinking balanced lug for the proa as it's CE is closer to the mast so you don't have to compensate so much when the sail...
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    I think it's better to cut the notch in the top...

    I think it's better to cut the notch in the top rear corner of the centerboard case rather than in the topmost frame of BH3 so you don't weaken that bulkhead in any case. Can't remember what the...
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    I think it could be done with some of the...

    I think it could be done with some of the internal structure in 4 mm ply provided you were careful and put extra battens across those panels on the inside to compensate for the lower stiffness of the...
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    I did bulkhead 1 and 2 from 6 mm ply, but...

    I did bulkhead 1 and 2 from 6 mm ply, but bulkheads 3 (the middle one Joost refers to) and 4 are from 4 mm ply. I haven't had any problems, everything feels very solid, although my bulkhead 3 has no...
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    Finally a picture of the yawl on the water:...

    Finally a picture of the yawl on the water:
    https://www.woodworkforums.com/attachments/f169/249967d1358292745-gis-yawl-conversion-variation-yawl.jpg
    A nice gentle breeze day, I could get out under...
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    Hi, thanks for the info on that boat with the...

    Hi, thanks for the info on that boat with the heavy centerboard. It looks like a daggerboard (it slides up and down rather than pivoting back?) It's something I've thought about, but I'm not sure...
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    I'm not convinced. I think a heavy centerboard...

    I'm not convinced. I think a heavy centerboard (i.e. remaining in place and pivoting up into a slot) could be an option in boats this size, but if you make a daggerboard heavy enough to help with...
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    Some things I want to try next: A really small...

    Some things I want to try next:

    A really small lugsail - perhaps yard and boom only 1.5 m long, area 3 square metres or so, reefable down to 2 square metres. I could then then run with 2 square...
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    Yes, I'll play with a few ideas. More ropes...

    Yes, I'll play with a few ideas. More ropes floating around in the cockpit would be a pain, but it seems to me the biggest danger that it would be hard to recover from out there would be getting...
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    It works, but the oar lock set-up isn't complete....

    It works, but the oar lock set-up isn't complete. Yes, they do drop down into the spaces between the gunwales. I'll post more on them when I've got them sorted properly, plan is to 3D print some...
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    My comments in blue, Mik's in black: I...

    My comments in blue, Mik's in black:




    I am very impressed with how hard it is to invert the GIS with the sealed buoyant masts and yard. My previous capsize was with a crew, post capsize he...
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    More on my mizzen setup: 247523 247518 ...

    More on my mizzen setup:

    247523

    247518

    My mizzen mast is fiberglass, wound on a tapered mandrel with a sleeve in the middle so it comes apart into two short pieces and weighs just on 2 kg. ...
  27. Replies
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    My Yawl conversion: When I started building, I...

    My Yawl conversion:

    When I started building, I didn't plan on doing the yawl version, but was convinced by Mik's comments after he completed the Texas 500 with John Goodman.

    I'd already done...
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    GIS Yawl Conversion/variation

    I finally finished my yawl conversion a couple of weeks ago. (OK, it's still work in progress, but I've had a couple of chances to try it out) I've been reluctant to post too much till I've had a...
  29. You're mixing up stiffness and strength in the...

    You're mixing up stiffness and strength in the above post. Basically, elastic modulus is the same in compression and tension, even though strength of wood is quite a bit higher in tension than...
  30. Replies
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    I agree with Mik here. If we compare a...

    I agree with Mik here. If we compare a 'standard' marconi (sloop or cat) set-up with non rotating mast, sail in mast track, there will always be quite a separation bubble in the front third of the...
  31. Thread: GIS Yawl

    by IanHowick
    Replies
    512
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    115,432

    A thought on a quick and possibly cheap way to...

    A thought on a quick and possibly cheap way to add a mizzen to a GIS if you can get a free or nearly free laser mast and sail:

    The top section of a laser mast is 3.6 - just right for a mizzen.
    ...
  32. Replies
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    Here is an idea for stepping a laser mast behind...

    Here is an idea for stepping a laser mast behind bulkhead 2. Lash the three sided box in behind the bulkhead, perhaps with a locator pin or two to keep it from slipping around. It would let you...
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    Trying to get back to laser rig options... If...

    Trying to get back to laser rig options...

    If you could get two laser rigs for free/next to free, I can see a "Laser Rig Yawl" working. The laser topmast is 3.6 m long, so just right for a...
  34. Replies
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    What both David and Woodeneye need is a bigger...

    What both David and Woodeneye need is a bigger higher aspect lug rig. Import one of the full carbon lug rigs designed for Nigel Iren's Romily:

    http://www.nauticaltrek.com/images/8/7418.jpg
    ...
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    I must keep an eye out for a second hand or...

    I must keep an eye out for a second hand or borrowable laser rig. It would be interesting to try it with the yawl mizzen.

    As the laser mast is in two pieces, it could make a good, compact, fit...
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    Hi callsign, as you reef more deeply, which way...

    Hi callsign, as you reef more deeply, which way do you move your halyard attachment point - towards the throat or towards the peak?

    I've gone to second reef without moving my halyard attachment on...
  37. Replies
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    Maybe worth looking at where the halyard loop on...

    Maybe worth looking at where the halyard loop on the yard is attached. Moving it a bit towards the peak might tension the upper leech more and stop it flapping. Worth a try, but the important thing...
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    Luff luffing when the leech telltails are...

    Luff luffing when the leech telltails are streaming but conversely the leech telltails sucking onto the lee side when the sail is sheeted in enough to stop the luff luffing?

    To me this is an...
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    Yes the curve of the chine edge of the side panel...

    Yes the curve of the chine edge of the side panel reverses towards the stern. There's no reversal of the actual curve/camber of either panel, it's a consequence of the straight run back of the...
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    The problem in an open boat though, is that if...

    The problem in an open boat though, is that if you lean it up wave, and the wave breaks, it'll all come on board. That's better though than tripping on the down wave side and rolling the boat.
    ...
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    My take on this is it's due to the way the water...

    My take on this is it's due to the way the water circulates in the wave. The water at the top of the wave (where the stern is when you're running down wind) is dropping down the wave.. The water at...
  42. That would have been a great comedic photo essay/...

    That would have been a great comedic photo essay/ video if there'd been someone there to take it!

    Interesting to see your and callsigns accounts of capsizes and bailing. I had the chance to...
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    Thanks for the write up Christophe! A long...

    Thanks for the write up Christophe!

    A long time ago, you tried some extra ballast (sandbags?) for solo sailing. Would having the boat ballasted with a couple of sandbags or a couple of plastic...
  44. Bruce, you've got me all confused now. Can you...

    Bruce, you've got me all confused now. Can you tell me what you mean by boom angle and sheeting angle. Are these the same thing, and are you measuring them from the centreline of the boat? What do...
  45. Hi Mik, from the mast back to the traveller...

    Hi Mik, from the mast back to the traveller position woodeneye (and I) use is 3.2 m. 10 degrees either side of the centreline is 55 cm either side of the centreline at this distance, which is almost...
  46. What I really want to see alongside that hiking...

    What I really want to see alongside that hiking frame is a topmast and a bowsprit so you can fly one of those big asymetric gennakers off one of thise skiffs as well:o.

    Make sure you've got...
  47. Thread: GIS Yawl

    by IanHowick
    Replies
    512
    Views
    115,432

    It's going back a bit, but when I first saw this...

    It's going back a bit, but when I first saw this I didn't have a chance to look at the video. It looks like you have a crease from clew to throat at about 17 seconds. I think the solution is to...
  48. There's an 8ft OZ Racer and a 12 foot PD Goose,...

    There's an 8ft OZ Racer and a 12 foot PD Goose, but I haven't heard of something halfway in between these two.

    Puddle Duck Racer PD Racer plan

    Ian
  49. Replies
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    I was struck by what seems to be a big difference...

    I was struck by what seems to be a big difference in the twist control on similar courses between the two top pictures of Clint and Callsign222's rigs and then mine below them:
    ...
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    The alu section you mention above is about 15...

    The alu section you mention above is about 15 kN^2, similar to the 63.5 mm OD/ 1.6 mm wall carbon section from that UK manufacturer. Does that 70 mm OD 1.65 mm wall alu tube stand up unstayed, or is...
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