Wing-drive

Discussion in 'Sailboats' started by Kjell Dahlberg, Feb 27, 2005.

  1. Kjell Dahlberg
    Joined: Feb 2005
    Posts: 9
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Spain

    Kjell Dahlberg Junior Member

  2. Morgig
    Joined: Jul 2003
    Posts: 56
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Brighton, Sussex, UK

    Morgig Junior Member

    Looks the same as the Walker Wing sail to me, what’s the differences?
     
  3. Kjell Dahlberg
    Joined: Feb 2005
    Posts: 9
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Spain

    Kjell Dahlberg Junior Member

    Common design:
    WING DRIVE and Walker WING SAIL are mounted on a central shaft permitting the rig to swing360 deg. A Tail orients the wing /s to the wind. There are no attachments to the hull.
    Differences:
    WING DRIVE is designed to use on Catamarans with displacement hull.
    Walker WING SAIL was designed to be used on a fast running Trimaran.
    WING DRIVE is hand operated, controlled by the Crew, in the same way as a steering system.
    Walker WING SAIL is Computer controlled. Emergency hand operation is difficult.
    WING DRIVE has a self adjusted Spinnaker for easy down wind sailing.
    Walker WING SAIL has no Spinnaker.
    WING DRIVE has two wings with reduced height of the rig, reducing the capsizing risk.
    Walker WING SAIL has one wing. The Computer controls the capsizing risk.
    WING DRIVE has a Wedge Tail that holds the rig to an accurate wind angle.
    Walker WING SAIL has an Aerofoil Tail that holds the rig to an approximate wind angle.
     
  4. SailDesign
    Joined: Jan 2003
    Posts: 1,964
    Likes: 96, Points: 58, Legacy Rep: 650
    Location: Jamestown, RI, USA

    SailDesign Old Phart! Stay upwind..

    In the "differences" column, I'd take issue with some points:-

    While the Walker Wing Sail was developed for a trimaran (Planesail), it has been used successfully (key word) on catamarans, tris, foil-assisted monos, and - gasp! - at least one ship (big, heavy, cargo-carrying thing)
    Emergency hand control is easy to use - but a real witch-with-a-"B" to set up :)
    Spinnaker? Easy enough to set one up for a Walker, but the wings are more efficient.
    Most Walker wings were multiple element, it all depended on the use. The ship-board unit had 3 wings, IIRC.
    The Walker trim-tab system was just as effective as a "wedge" tail, probably more so. Please try to tell the difference between reality and a sales pitch.

    Steve
     
  5. Kjell Dahlberg
    Joined: Feb 2005
    Posts: 9
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Spain

    Kjell Dahlberg Junior Member

    The Walker Wingsail system was a great idea. But it didn’t work the way John Walker expected. He make tree different wing sail system. One wing,Zephyre 43.Twin wing Blue Nova and triple wings for M.V. Ashington. None of them are in production for the moment. I have been in factory in Plymouth and I have been sailing with the Zephyre 43. It was a fantastic experience. I like the modern wind propulsion. Referent to the differences between the “wedge-tail and a foil tail quit big. Only testing the two tails side to side is possible to appreciate the great difference how they control the angle of attack.
     
  6. Andy P
    Joined: Nov 2003
    Posts: 97
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Isle of Wight UK

    Andy P Junior Member

    The land yacht pic is a fake!

    the centre pic is a bit of a joke

    the proa pic is an 'artists impression ' !
     
  7. SailDesign
    Joined: Jan 2003
    Posts: 1,964
    Likes: 96, Points: 58, Legacy Rep: 650
    Location: Jamestown, RI, USA

    SailDesign Old Phart! Stay upwind..

    Am I biased?.....

    Still the best use for a Wingsail, in my opinion.
    But then I am a liiiitle bit biased. :)
     

    Attached Files:

  8. Kjell Dahlberg
    Joined: Feb 2005
    Posts: 9
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Spain

    Kjell Dahlberg Junior Member

    Steve.
    I am agreeing with you to use the wind propulsion system on fishing boats. I think you will see a very big change in the fuel bill. The problem with Walker Wingsail System is that it is too heavy, too complicated and too expensive. The WING-DRIVE is light, easier to use and not so expensive.
     
  9. ErikG
    Joined: Feb 2002
    Posts: 397
    Likes: 12, Points: 18, Legacy Rep: 344
    Location: Stockholm, Sweden

    ErikG Senior Member

    Careful now Kjell that ain't no fishingboat! ;) :D
     
  10. Kjell Dahlberg
    Joined: Feb 2005
    Posts: 9
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Spain

    Kjell Dahlberg Junior Member

    Sorry on Trawler Yachts and Fishing boats
     
  11. SailDesign
    Joined: Jan 2003
    Posts: 1,964
    Likes: 96, Points: 58, Legacy Rep: 650
    Location: Jamestown, RI, USA

    SailDesign Old Phart! Stay upwind..

    Be fair, Erik - the hull was based on a fishing boat (see Dim's "Old School" series) :)
     
  12. Skippy
    Joined: Nov 2004
    Posts: 568
    Likes: 1, Points: 0, Legacy Rep: 12
    Location: cornfields

    Skippy Senior Member

    Wow, how well does this thing work? Looks like the wedge winds up pointing farther up into the wind than the wings, so their backwash is hitting it side-on. Sounds like a lotta windage.
     
  13. Kjell Dahlberg
    Joined: Feb 2005
    Posts: 9
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Spain

    Kjell Dahlberg Junior Member

    Skippy,
    The Wing.Drive is the easy and safest way of using the wind as propulsion. No physical effort involved. No ropes, no winches no hard work on deck. The wedge tail looks after the set wing angle and with the wedge tail set to “Zero thrust” the Wing-Drive actuate as a wind vane. I have been sailing with my prototype for 2 years with very good result.
    Kjell
     
  14. kjell
    Joined: Aug 2005
    Posts: 271
    Likes: 5, Points: 0, Legacy Rep: 31
    Location: mallorca

    kjell Senior Member

    New Project with twin Wing-Drive on motorsailer. The Wing-Drive originally designed for Catamarans is now projecting to bee installed on a monohull.
     

  15. masrapido
    Joined: May 2005
    Posts: 263
    Likes: 35, Points: 28, Legacy Rep: 330
    Location: Chile

    masrapido Junior forever

    Kjel,

    I do not see how you pull the wings down. What if a sailor gets caught in a wing to strong to control and needs to reduce the sails? Is that possible with your wing? I like the wing idea but, for cruising purposes, the only viable wing sails are done by this guy: www.wingsails.com
     
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.