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2250RE: [macgregor19sailboats] Question re: fully retracting centerboard, easily??

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  • dan sullivan
    Jun 10, 2014
    • 0 Attachment
      It's been a few years but I ordered "Spectra" Downhaul line for windsurfing sails on ebay. 

      It looks like this is the latest...1365 lb 3.8 mm line.


      I had 3 stock CB cable failures ( failed swag crimp) and I was ALL DONE installing the @#$%^&  nut and bolt on the center board from down below or opening the ballast tank and resealing everything.

      I just looped like 6 feet of the spectra line around the CB bolt ( cable was broken so I didn't have to remove the bolt ) and tied it in the middle of the line with a genoa sheet knot, then ran both ends around the CB pulley up thru the hull and tied both ends off to the centerboard raising block. I think I used the old cable to snake it through. I was WAY easier than installing a new cable....
       
      Congrats on breaking 20! Rudders up made a huge difference with me.

      I found that 3 blade props go a little bit faster ( few more rpm ) than the 4 blade. Just less mass to spin.
      What prop pitch are you running?  probably an 8?

      Yeah the transom wedge is VITAL for top speed. Can't level out without it. I wish Macgregor designed a better transom angle and a motor well that didn't restrict you to a center tiller motor or remote steering to work with rudders up...



      To: macgregor19sailboats@yahoogroups.com
      From: macgregor19sailboats@yahoogroups.com
      Date: Tue, 10 Jun 2014 13:42:16 -0700
      Subject: Re: [macgregor19sailboats] Question re: fully retracting centerboard, easily??

       


      That Spectra looks interesting.  I see it on Amazon for about $20 for the 50 pound test.  Do you remember what strength you used and how hard it was to thread it through the hull?

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      As far as the rudders, they are completely up and out now, as per this updated album:

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      As far as the prop, it's a 4 blade on the Merc.  Once I install a tachometer, I'll have a better idea if it's optimal. But it matches what Merc recommends per boat length & weight for towing/ running (i.e., we like tubing/ skiing). The extra 10 degrees of wedge have helped, as per these photos.  But I'm still falling short of 23 mph by 2-3 mph, at this time.



      Regards,
      Bruce/ North Star/ Dundee Creek


      From: "dan sullivan sailhard@... [macgregor19sailboats]" <macgregor19sailboats@yahoogroups.com>
      To: "macgregor19sailboats@yahoogroups.com" <macgregor19sailboats@yahoogroups.com>
      Sent: Tuesday, June 10, 2014 10:44 AM
      Subject: RE: [macgregor19sailboats] Question re: fully retracting centerboard, easily??

       
      What pitch prop? Were your rudders up? My CB used to droop down too, but I replaced the troublesome swagged cable with 2 lines of spectra and now it comes all the way up. The spectra has lasted 3 seasons so far. :)
       
      I'm VERY happy with my new 3 blade 9 pitch Honda prop and BF40. I can get 22 mph top speed ballast empty with 2 adults/ 2 kids. and no "singing" at low speeds like with my Michigan prop.
       

       

      To: macgregor19sailboats@yahoogroups.com
      From: macgregor19sailboats@yahoogroups.com
      Date: Tue, 10 Jun 2014 06:59:28 -0700
      Subject: [macgregor19sailboats] Question re: fully retracting centerboard, easily??

       
      Dear fellow Mac 19 friends,

      Our boat is finally able to achieve 20+ mph with our new Merc 40.  Our key issue was that the centerboard was hanging about 3" low when casually "retracted." 

      With intentional lifting of the board while on trailer, and locking it in from the inside,  it was fully retracted & the boat broke 20 mph finally.

      The centerboard lifting design suffers from the friction of the CB cable grinding over that metal bar inside.  Has anyone developed an easy way to be confident that the board is fully up, when motoring, or is this just not an issue for others?

      Thank you!
      Bruce / North Star / Dundee Creek, Chesapeake Bay



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