Harry Proa Bucket list

Discussion in 'Multihulls' started by Kentaro, Apr 28, 2016.

  1. Kentaro
    Joined: Mar 2016
    Posts: 3
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: France

    Kentaro New Member

    Hello everybody,

    I like to go out of the box and seach for "new" things.

    I just found this, the Bucket list, from Harry Proa, in New Zealand (perhaps this is not new, but at least, this is new for me...).

    https://www.youtube.com/watch?v=ttXu3pRTzs8


    I find it very interesting, and would like to built something similar for a smaller 16' boat.

    Appart form the collapsible concept, I think that there are ideas which might raise some discussion...

    - the shape of the hulls is very simple, with an almost square section, which can be easily built lightweight with multiply.

    - this is a real shunting proa, we always stay on the same place, on the secondary hull.

    - the mast is positionned symetrically, just on the middle of the main hull.

    - there are 2 ruders, positionned along the main hull.

    This concept seems to work well, as Harry Proa makes large daysailers based on it.

    I really wonder why no amateur has tried to make such boat for smaller sizes.
     
  2. Tom.151
    Joined: Jul 2009
    Posts: 185
    Likes: 2, Points: 18, Legacy Rep: 38
    Location: New England, USA

    Tom.151 Senior Member

    Best to contact Rob Denny through the Harry Proa site.

    He's designed and built plenty of similar smaller proas - he might be able to provide plans for you from one of his earlier works.

    He's always been more than helpful.
     
  3. Doug Lord
    Joined: May 2009
    Posts: 14,291
    Likes: 124, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

  4. Kentaro
    Joined: Mar 2016
    Posts: 3
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: France

    Kentaro New Member

  5. Gus7119
    Joined: Dec 2015
    Posts: 110
    Likes: 1, Points: 0, Legacy Rep: 18
    Location: Sydney

    Gus7119 Senior Member

    Yep Rob Denney is your man he has a 60 ft cruising cat almost the same and is really happy to chat boats you'd be silly not to approach him at least he's got some fantastic designs email him

    harryproa@gmail.com

    And have a look at his site
     
  6. Corley
    Joined: Oct 2009
    Posts: 3,577
    Likes: 84, Points: 48, Legacy Rep: 826
    Location: Melbourne, Australia

    Corley epoxy coated

  7. Doug Lord
    Joined: May 2009
    Posts: 14,291
    Likes: 124, Points: 73, Legacy Rep: 1362
    Location: Cocoa Beach, Florida

    Doug Lord Flight Ready

    Thanks, Corley. Congratulations, Rob!
     
  8. rob denney
    Joined: Feb 2005
    Posts: 635
    Likes: 40, Points: 28, Legacy Rep: 436
    Location: Australia

    rob denney Senior Member

    Tom, Gus, Doug,
    Thanks for the kind words.

    Kentaro,
    An updated version of the boat in the video could be built of ply, but would be lighter, less work and much cleaner if it was built using Intelligent Infusion http://harryproa.com/?p=1845

    I have not received an email from you. Please send it to harryproa@gmail.com

    The Bucket List launch went smoothly, although moving a 12m/40' x 7.5m/25' boat which draws 80mm/3" in 30 knots of breeze with a 6 hp o/board on an alloy dinghy was a bit challenging.
    We should have the top section of the sail (6.5m/20' luff) in a couple of days and may be sailing by the weekend. Once we know the top section works, we will add the rest of the sail and see how the telescoping mast works.
    A video of the launch will be on the Bucket List build blog http://harryproa.com/?cat=2 and harryproa Facebook page later today, as will reports and video of progress as it happens.
     
  9. Corley
    Joined: Oct 2009
    Posts: 3,577
    Likes: 84, Points: 48, Legacy Rep: 826
    Location: Melbourne, Australia

    Corley epoxy coated

  10. Barra
    Joined: Feb 2014
    Posts: 93
    Likes: 4, Points: 8, Legacy Rep: 32
    Location: Perth

    Barra Junior Member

    Excellent.

    Now the question is not" how fast it will go". but "how long will it last before bits start flying off it".

    Ocean Racer??:eek::eek:
     
  11. luckystrike
    Joined: Feb 2010
    Posts: 215
    Likes: 12, Points: 18, Legacy Rep: 92
    Location: Germany

    luckystrike Power Kraut

    bucket list

    Capsizing when sleeping must be a funny thing when you climb out of the windward hull and look 7,5m down to the mast and sail lying in the water.

    I imagine how it feels jumping from the 5 metre diving platform in our local swimming bath (and adding 2 additional metres) ....whou!

    Rob, do you plan to carry a climbing harness or a parachute on board to get down to the leeward hull?

    Michel
     
  12. Barra
    Joined: Feb 2014
    Posts: 93
    Likes: 4, Points: 8, Legacy Rep: 32
    Location: Perth

    Barra Junior Member

    Yes it will be interesting to see how it all pans out.

    The crew righting bit should be fun with a telescopic mast full of water and the crew dangling in mid air from their tethers.:confused:
     
  13. Tiny Turnip
    Joined: Mar 2008
    Posts: 487
    Likes: 49, Points: 28, Legacy Rep: 743
    Location: Huddersfield, UK

    Tiny Turnip Senior Member

    From the Harryproa website: 'Bucket List has a fuse on the main sheet cleat which releases at 30 degrees of pitch or heel. If it does capsize, the buoyant mast stops it going past 90° from where the buoyant boom will right it without the crew getting wet.'
     
  14. rob denney
    Joined: Feb 2005
    Posts: 635
    Likes: 40, Points: 28, Legacy Rep: 436
    Location: Australia

    rob denney Senior Member

    Not long, I suspect, but that is half the fun of designing and building something unique and near the limits. It is also a result of having the first examples of a developing building method for the hulls, beams and masts.

    How fast do you think it will go? http://harryproa.com/?p=1837

    Not as it is, but once the bugs are out, why do you think it won't be?

    Michel,
    Better to wake up 7.5m in the air than on the ceiling in knee deep water on an inverted cat or tri. There will be a rope ladder down the tramp when we get it to the capsize stage. Before that, we will have installed and tested the anticapsize fuse, so the ladder should not be required except to prove it is rightable.

    Barra,
    I am more interested in trying new ideas than I am in starting a racing multihull charter company so the boat as built turned out differently to the one in the video. If anyone is interested in the charter idea (4 boats in a container at $50k each), the original concept still stands, although as the concept is now 3 years old, there are a number of small things we would change to make it easier to sail and assemble, faster and cheaper.

    The telescoping rig probably won't right the boat, although the sealed top section should keep it horizontal which will make righting easier than if it was upside down. Canting the mast will then be enough to right it. Be fun to find out, but there are a number of other things to play with first.

    Tiny Turnip:
    The boom righting requires crew input to winch the boom below the water. Part of this is done from the leeward hull.
     

  15. jorgepease
    Joined: Feb 2012
    Posts: 1,405
    Likes: 24, Points: 38, Legacy Rep: 75
    Location: Florida

    jorgepease Senior Member

    Nice Job - Congrats! Can't wait to see it in action!!
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.