Wind vane

  • 26 Apr 2015 13:36
    Reply # 3316918 on 1549444
    Deleted user

    Hey Oscar and Paul,

    Any news to report about your Hebridean self-steering kits?


  • 20 Feb 2015 03:31
    Reply # 3230307 on 3229148
    Gary King wrote:

    After a few months of fiddling with the vane and trim tab, enlarging the vane from OGT2 to OGT1 size, then eventually tossing the trim tab (it wasn't offset from the rudder which I think it needs to be). I was surprised the vane started steering properly with direct to the tiller - just needed to get the tiller distance right ....

    Great to hear that you got such a simple and inexpensive system to work.  Well, with patience and in reasonable winds.  But if you were really strapped for cash, you could probably find patience and be prepared to steer in very light conditions. 


    Much more to the point for most people is the fact that if your expensive Monitor, Aries or whatever gets wrecked in an accident miles from any place with Fed-Ex, you could build yourself something that would work well enough for you to carry on cruising indefinitely.  Indeed, it would be cheap insurance to have the necessary bits and pieces on board, ready to assemble.
  • 20 Feb 2015 03:26
    Reply # 3230304 on 3228560
    Arne Kverneland wrote:

    From this I conclude that the rudder on Easy Go indeed had a balanced rudder, as seen on some of these Benford dories.

     
    Indeed she did, Arne: I was mixing her up with one of the other dories :-[.  The rudder in question is shown in My Photo Album, 'Useful Pics'.  The rudder is far from the perfection striven for by Paul and others, which makes you (well, me) think!
  • 19 Feb 2015 00:00
    Reply # 3229148 on 1549444
    Deleted user

    After a few months of fiddling with the vane and trim tab, enlarging the vane from OGT2 to OGT1 size, then eventually tossing the trim tab (it wasn't offset from the rudder which I think it needs to be). I was surprised the vane started steering properly with direct to the tiller - just needed to get the tiller distance right, I think 45cm right angles from the rudder axis and requires trimming of the sails to reduce helm to work well. I sometimes use a thin bungy cord on the tiller to counteract any weather helm too, which works. It's worked well on beam, broad reach and downwind goose winged. Upwind, the boat sails itself with tiller lashed. So lots of fiddling around and you will get it working.

    I've been slack lately since getting a Raymarine tiller pilot and neglecting the vane (TP is better in light winds), but now we are into rougher seas we should get back to it, as the TP has ripped the mounting points off deck and the tiller 4 times already. So the story is, TP for light winds and motoring, vane for everything else.

    The rudder on our Badger is large with only 5% balance, it's not a particularly light steerer.

    Last modified: 19 Feb 2015 00:02 | Deleted user
  • 18 Feb 2015 12:06
    Reply # 3228576 on 1549444
    Deleted user

    Interesting article!

    On the first page Bob says "our Benford Badger 34 ft. junk schooner has an extremely large and well-balanced rudder."

  • 18 Feb 2015 11:24
    Reply # 3228560 on 1549444
    Anonymous member (Administrator)

    Annie, you certainly are right when hinting that I had something to learn in those days. However, as I recall it, it was not strong winds that gave problems. Malena’s rudder, totally unbalanced and sitting behind a skeg, simply needs some tiller forces to control it, higher than on the much bigger Johanna, with her horn-balanced rudder.

    Now I re-read Bob Grove’s article about his “Reggy, the Regulator” in Magazine 51. The last paragraph opens with...

     Without a balanced rudder this same vane could be used to control a trim tab on the rear of the rudder or become the driving force for a servo pendulum gear”...

    From this I conclude that the rudder on Easy Go indeed had a balanced rudder, as seen on some of these Benford dories. Even Reggy, twice as strong as my Otto, would not be man enough to control a 5-ton boat with an unbalanced rudder. As you well know, quartering seas are just as eager to push a boat off course as the sail(s) are, so fitting a 2-stick rig would only solve half of the problem.

    Cheers, Arne

     

  • 18 Feb 2015 01:14
    Reply # 3228364 on 3226510
    Arne Kverneland wrote:

    I made a Belcher type, direct drive windwane for my 1.4ton Malena, many years ago. It was an OGT MkII design (...named ‘Otto’...), about half as strong as the bigger OGT MkI. While Otto controlled the course of Malena quite well as long as she had a Bermuda rig, the introduction of a JR gave too much weather helm when broad-reaching and running.

    Arne, maybe you suffered so much weather helm in those early days, because you hadn't yet learnt that you should reef early!

    Frankly I doubt if even the strong OGT Mk I will be powerful enough to control a junk-rigged Contessa 26 with direct drive. I hope to install Otto on my similar Marieholm IF, Ingeborg (just for fun)

    One worked very well on the 34ft Easy Go, whose rudder was no better than a Contessa's.  But of course she did have a schooner rig and maybe Bob balanced her carefully.
  • 17 Feb 2015 02:21
    Reply # 3227456 on 3227259
    Oscar Fröberg wrote:

    Paul, small world! I just bought the Hebridean kit and addressed my interests  in developing a method of adjusting the course remotely and John replied saying there was a guy attempting to do it already and while he was skeptical  about it he promised to keep me informed about the potential progress. I assume it was you he was talking about and I hope you do succeed! :) Shoot me an email if you want to exchange ideas, I'd love to see what you've come up with so far. rr


    Oscar, I've emailed you and yes, I'm likely the "other guy" :-) Everyone else, as soon as I have something to show (in about a weeks time) I'll post here.
    Last modified: 17 Feb 2015 02:23 | Anonymous member
  • 16 Feb 2015 20:53
    Reply # 3227259 on 1549444

    Paul, small world! I just bought the Hebridean kit and addressed my interests  in developing a method of adjusting the course remotely and John replied saying there was a guy attempting to do it already and while he was skeptical  about it he promised to keep me informed about the potential progress. I assume it was you he was talking about and I hope you do succeed! :) Shoot me an email if you want to exchange ideas, I'd love to see what you've come up with so far. 

  • 16 Feb 2015 20:07
    Reply # 3227225 on 1549444
    Anonymous member (Administrator)

    Karlis,

    Don’t let the rake of the folkboat’s rudder fill you with concern  -  it is no big deal for such a little craft. I have sailed quite a bit in the Marieholm IF (not mine), and I have raced a lot in a real, clinker-built Nordic Folkboat, so I can assure you that these are seriously good, nimble, and above all, weatherly sailboats. The rake of the rudder can do little harm as long as rudder angles are low  -  which they are most of the time. Moreover, with its ample keel area, narrow beam, low freeboard and really high ballast ratio (well over 50%), the FB simply cannot fail, in particular not when upgraded with a big cambered-panel junkrig.

    Arne

     

       " ...there is nothing - absolutely nothing - half so much worth doing as simply messing about in junk-rigged boats" 
                                                               - the Chinese Water Rat

                                                              Site contents © the Junk Rig Association and/or individual authors

Powered by Wild Apricot Membership Software