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ScarecrowR31

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Posts posted by ScarecrowR31

    Draft of Raven 31?

    in MarineTalk

    Posted

    Ravens problem wasnt height of rig but it being a true 3/4 rig. Combine this with a furler and a little small up front. However does make it a great family boat. Forard berth and heads are huge, great locker that fits EVERYTHING and a scoop thats big enough to store a 2.5m inflatable sideways. Off the wind in any real wind, rocky steady with speeds 8-10knots consistent. Upwind a bit low and slow. If you point up too high goes sideways so trim for not quiet eased and point a little low..VMG then OK  My 5 cents worth

    Draft of Raven 31?

    in MarineTalk

    Posted

    Hi ECS, Loved the Raven. Stern is outstanding as love sailing, fishing Diving etc. Always felt  safe, even took her round the North Island via the Three Kings. Only change would be a bigger rig as she is a big volume boat and sticky in the light.

    Mast head/Fractional pros and cons

    in MarineTalk

    Posted

    Hi LBD . I think the debate has many parts. Fractional easier to de-power meaning short crewed advantages ( and can still be masthead).  But with code 0s and gennaker  development masthead gives light air capacity with increased luff length. Of course  designers get around this with higher aspect rigs. This adds running backstays etc. Personally I like a high aspect fractional and found running backstays and topmast backstay not that much of a hassle.

    ANTIFOUL

    in TechTalk

    Posted

    After having used copper coat on my last boat for 12 years (its been on since the 90s) and having done a full redcoat I can say the product  can work but depends on location. Application is easy BUT you need real organisation, 2 people minimum and little wind and not two hot. If applied two thick will sag (I know from attempting a single handed touch up). As the instructions say at least 4 thin coats tack on tack. The Sandspit boat was applied very thick and the results reflected this. On a 31ft boat should take a full day to apply. Would I put it on again?-If you are time rich then yes but does require up keep

    Fatality - Northland

    in MarineTalk

    Posted

    So would a compression of air inside, followed by rapid release blow out the windows ie Hydraulic action. Not sure of the physics of why decompression is so explosive but know it is an important process in shaping coastal geomorphology

     

    "Hydraulic action refers to the action of water, generally from powerful waves, rushing into cracks in the rockface. This process traps a layer of air at the bottom of the crack, compressing it and weakening the rock. When the wave retreats, the trapped air is suddenly released with explosive force. The explosive release of highly pressurized air cracks away fragments at the rockface and widens the crack, so that more air is trapped on the next wave. This progressive system of positive feedback can damage cliffs and cause rapid weathering."

    Fatality - Northland

    in MarineTalk

    Posted

    Hi Bp Great clip. Pretty sure though as as waves start to "feel bottom" the orbit slows an they become eliptical and slow down. This changes the wave length,waves closer together and the waves eventually become translatory and break. These eleptical orbits can be felt snorkelling in a swell. you are moved backwards and forwards rather than in a circular orbit. When diving a more an circular orbit.

    Wright 11

    in MarineTalk

    Posted

    The Wright 11 was a final development of his keelboat designs (Quest range) with a high volume. wide stern, moderate waterline with scoop and a rig looking to be more multi than mono. ie mast well forward and relatively small headsail. Boat I have sailed on had a Kahn(?)rudder as rudder designs were possibly not one of Alans strengths. The Wright 10 in club racing is pretty similar in performance to the 11. Possibly a little lighter in glass

    Teak deck options

    in TechTalk

    Posted

    Did all this on a 28footer. When removing teak a short pry bar was great and then an electric plane. Fisished then with orbital sander. Didnt need to touch ply apart from a small section. Glassed over and glued/dowelled toe rails on top. took 1 week flat out from out to in.Coved around cabin top after glassing so totally watertight. Still looked mint 5 years later when I sold that boat.

    North Cape stopover

    in MarineTalk

    Posted

    We joined Waikawa Yacht Club for the trip south. This gives excess to all the moorings and an excellent chart/map/cruising guide. Club closed when we were there but showers and other facilities excellent. We went down in early to mid december when there nearly always seems to be a good weather window.

    Restoration and Windows

    in TechTalk

    Posted

    Hi Replaced windows October 2018 Used VHB tape and Dow silicone. No screws and reasonably long windows all done on a marina in i day (Raven 31). Trip round the North Island over summer and no leaks whatsoever. Was warned against going too thick in the acrylic as the thermal mass and tendancy of material to pull away (tries to stay straight) can apparently cause an issue..

    Window sealant

    in TechTalk

    Posted

    Yep use 795 and VHB. Avoid screw/fastenings if possible (Thermal expansion). Discussion may need a little more focus on how attached ie external,rebate,frame and if perspex or lexan.

    East or West Coast? Auckland to Wellington...

    in MarineTalk

    Posted

    Thanks Sabre

    4 crew which meant 2 on watch if needed. Across the BOP we needed 2 at one stage with 25-30 knots on the quarter but only for about 6 hours. Waves sounded like trains. 6 days up (including Three Kings) and down, then 5 on the way up home but spent about 6 hours anchored at Hicks Bay for a sleep. Motored lots to keep in weather window so carried 200l of fuel. Easy rip with a gennaker run across Cook Strait.

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