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Daggerboard position? #232911
05/28/11 09:27 PM
05/28/11 09:27 PM
Joined: May 2006
Posts: 1,383
Kingston SE South Australia
JeffS Offline OP
veteran
JeffS  Offline OP
veteran

Joined: May 2006
Posts: 1,383
Kingston SE South Australia
G'day I need to finish of some new hulls for a Mozzie and am wondering if there is a set position where the trunk has to be on the hulls or if there is an optimum position for it to be sailed by one 70kg teenager or 130kg with crew? If we were to play around with square top sails for our club sailing would that change the position of the trunks? Are the boards straight down or slightly cantered?
regards Jeff


Jeff Southall
Current boats
Nacra 5.8 1703 Animal Scanning Services
Nacra 5.8 1667 Ram Raider
Nacra 18 Square
Arrow 1576
-- Have You Seen This? --
Re: Daggerboard position? [Re: JeffS] #232917
05/29/11 02:09 AM
05/29/11 02:09 AM

T
thricebitten
Unregistered
thricebitten
Unregistered
T



Hi Jeff,

these days everybody seems to put them at the maximum distance aft, there is a measurement on this.

Also most are put in with maximum angle aft as well, this is also in the Measurement Rules. I put mine in straight, to try and get more lift. But I don't think it makes a lot of difference for an old boat, probably better to angle them back to avoid weather helm for a less experienced sailor.

Wouldn't bother with the Square Top, the one we experimented with we couldn't get to go any faster than standard sail confused . Also square top just makes the bows easier to bury. After all Mossie is fast enough as is wink .

Last edited by thricebitten; 05/29/11 02:14 AM.
Re: Daggerboard position? [Re: ] #232919
05/29/11 05:52 AM
05/29/11 05:52 AM
Joined: May 2006
Posts: 1,383
Kingston SE South Australia
JeffS Offline OP
veteran
JeffS  Offline OP
veteran

Joined: May 2006
Posts: 1,383
Kingston SE South Australia
Thanks Gary that helps a lot. I'll go with the rules. The square top is just a thought to try to get more of the juniors on a mozzy at club level. We had two F16 Blades at our race and we have 4 more juniors that want them but no one will pay for them, so just thinking outside the square.


Jeff Southall
Current boats
Nacra 5.8 1703 Animal Scanning Services
Nacra 5.8 1667 Ram Raider
Nacra 18 Square
Arrow 1576
Re: Daggerboard position? [Re: JeffS] #233220
06/04/11 07:06 AM
06/04/11 07:06 AM
Joined: Oct 2010
Posts: 92
South Oz
Phillip Offline
journeyman
Phillip  Offline
journeyman

Joined: Oct 2010
Posts: 92
South Oz
Jeff, Aft edge of centre board case opening is max 3353mm measured from the bow along the centre line of the hull. If the hulls are beamed take care tape measure is straight. Max rake (aft) of centre board is 10degrees. I measure this using a straight edge on top of the two beams, centreboard raised up above the straight edge, measure the angle between the straight edge and the forward edge of the centreboard (usually a straight edge also). I also check the centreboard cannot be swung forward/aft within its case during sailing thus increasing this rake angle.
Phillip Pearce

Last edited by Phillip; 06/04/11 07:07 AM.

Tortured ply is clearly beautiful.
Mozzie Aldebaran VI
1827
Re: Daggerboard position? [Re: Phillip] #233222
06/04/11 08:42 AM
06/04/11 08:42 AM
Joined: May 2006
Posts: 1,383
Kingston SE South Australia
JeffS Offline OP
veteran
JeffS  Offline OP
veteran

Joined: May 2006
Posts: 1,383
Kingston SE South Australia
Thanks Phillip I've gone with nearly maximum aft


Jeff Southall
Current boats
Nacra 5.8 1703 Animal Scanning Services
Nacra 5.8 1667 Ram Raider
Nacra 18 Square
Arrow 1576
Re: Daggerboard position? [Re: JeffS] #233311
06/07/11 08:48 PM
06/07/11 08:48 PM
Joined: Dec 2009
Posts: 11
Geelong, VIC
M
MD moz 1277 Offline
stranger
MD moz 1277  Offline
stranger
M

Joined: Dec 2009
Posts: 11
Geelong, VIC
? Kite as a way to get juniors in a mozzie. affordable performance.

Re: Daggerboard position? [Re: MD moz 1277] #233351
06/08/11 05:08 PM
06/08/11 05:08 PM
Joined: May 2006
Posts: 1,383
Kingston SE South Australia
JeffS Offline OP
veteran
JeffS  Offline OP
veteran

Joined: May 2006
Posts: 1,383
Kingston SE South Australia
The juniors have already asked, if I get a chance to set a kite up before I take it to the Lake Eyre Yacht Club regatta in July, I'll have a go with her then, first I have to find an old spin the right size


Jeff Southall
Current boats
Nacra 5.8 1703 Animal Scanning Services
Nacra 5.8 1667 Ram Raider
Nacra 18 Square
Arrow 1576
Re: Daggerboard position? [Re: JeffS] #233352
06/08/11 06:14 PM
06/08/11 06:14 PM
Joined: Jun 2006
Posts: 224
Lake Bonney, SA
dkd Offline
enthusiast
dkd  Offline
enthusiast

Joined: Jun 2006
Posts: 224
Lake Bonney, SA

Jeff,
I may know where there is a kite to class size. If your interested let me know.

David
Salpicon de Resplandor, 1744

Re: Daggerboard position? [Re: dkd] #233357
06/08/11 10:23 PM
06/08/11 10:23 PM
Joined: May 2006
Posts: 1,383
Kingston SE South Australia
JeffS Offline OP
veteran
JeffS  Offline OP
veteran

Joined: May 2006
Posts: 1,383
Kingston SE South Australia
I've sent a pm Dave


Jeff Southall
Current boats
Nacra 5.8 1703 Animal Scanning Services
Nacra 5.8 1667 Ram Raider
Nacra 18 Square
Arrow 1576
Re: Daggerboard position? [Re: JeffS] #233522
06/14/11 08:28 PM
06/14/11 08:28 PM
Joined: Jun 2006
Posts: 224
Lake Bonney, SA
dkd Offline
enthusiast
dkd  Offline
enthusiast

Joined: Jun 2006
Posts: 224
Lake Bonney, SA

Jeff,

have replied, sorry about delay but I am at sea (work) so internet is not always available.

David
Salpicon de Resplandor, 1744
and other boats.

Re: Daggerboard position? [Re: dkd] #233543
06/15/11 09:00 AM
06/15/11 09:00 AM
Joined: May 2006
Posts: 1,383
Kingston SE South Australia
JeffS Offline OP
veteran
JeffS  Offline OP
veteran

Joined: May 2006
Posts: 1,383
Kingston SE South Australia
Thanks DKD I now have a spin just need to get it all together and organise a snuffer etc


Jeff Southall
Current boats
Nacra 5.8 1703 Animal Scanning Services
Nacra 5.8 1667 Ram Raider
Nacra 18 Square
Arrow 1576

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