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New Style Daggerboard PDF Print E-mail
Written by John Gill   
Friday, 11 June 2010 11:00

Hi Pete

Sorry I have not got back to you, I’ve have been away. Anyway I have put some thoughts together.

49er Daggerboard

With the cassette I made. I was able to make sure the board is lined up within the boat. Also there is no gasket, this makes the board very ridged in the boat, which you can feel on the helm.

The first time I used it was in a good force 3/4. The boat felt stiffer and seemed to accelerate better, over all it felt smoother. With no other boats racing of similar performance it was hard to judge if it was faster.

p3060530 p3060531

The ISO open at Essex Y. C.

We were only able to do the Sunday, which was a good force 4. We seemed to have good upwind speed, pointing high and going fast, you seem to get more lift from the board; you can pinch and go very high, or sail a more freely and go faster, I have had it planing upwind.

Downwind I do feel you get a better top end speed, as you are not dragging a thick board through the water. We did seem to make most of our gains downwind.

We finished second in both races, and at one point we lead the race but we were still unable to beat Mike Lillywhite who was using the new Rooster sails, which I must say look very good.

The 49er dagger board, info.

  • It is a little smaller in area.
  • Nearly half the thickness and tapers down to the tip.
  • It is half the weight, only 3kg
  • Made of carbon, very stiff.

We are a 24 stone crew with wings, using Hyde sails, plus a carbon rudder stock, which helps with stiffness of the rudder.

John Gill
Tinky Winky 1003

Last Updated on Friday, 11 June 2010 11:31
 

Comments  

 
#5 Pete Lindley 2010-08-21 09:50
Johns instructions on the cassette manufacture now in the ISO Tech Dept. Section: isoracing.org.uk/.../...
 
 
#4 Jean-Luc De Keyser 2010-08-03 06:35
HI John,

Great job. Seems quite interesting despite the fact that 49er dagger board are pretty expensive.Any tips to make the cassette?
 
 
#3 Pete Lindley 2010-06-21 12:04
I've long wanted the lighter daggerboard. People say "It doesn't matter on the weight as it is neutral in the water" This may be so, but I think (I am no tecky) that there is too much drag. Also I think it is a bit embarrassing having to get the keel out of the car for our little ISO.
 
 
+1 #2 john gill 2010-06-21 12:00
No they are different, as the 49er custom fit the boards to the boat, there should be a lot of spare boards around, I have a mark 2 board, which I paid £150. A cassette could be made for all boards, but if it was accepted, I would suggest we only use mark 1 and 2.
Overall effect on the boat is great. Upwind and down. You get more lift from the board so pointing is good. Downwind the board in is a lot thinner which gives you a better top speed, also as there is no gasket on the cassette, so the board is ridged in the boat, which helps with the overall feel.
 
 
+1 #1 Marco Monciardini 2010-06-18 15:10
I know there are 3 different generations of 49 daggerboard... do they all fit ?
 

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