Thanks: 0
Likes: 0
Needs Pictures: 0
Picture(s) thanks: 0
Results 16 to 19 of 19
-
6th June 2010, 07:08 AM #16SENIOR MEMBER
- Join Date
- May 2008
- Location
- UK
- Posts
- 848
Exactly Ian.
Yes, the spars, 50% carbon/50% glass, do bend in that way. Quite soft at first, then stiffen up quickly. Windsurfing masts work in the same way, loads of downhaul pulled on with feet against the mast foot to pre-load the spar.
Staying is important. Unstayed the mast head can only bend off under pressure of the yard, and create a convex bend. Holding the head steady allows the concave bend.
As far as I am aware this set up is unique??? Some one will now post a drawing from the 1800 where it was used!
My boom also bends a a lot, same 50/50 carbon glass, and single point sheeting. Flattens the sail loads upwind. Sailmaker is aghast!
What fun.
Brian
-
6th June 2010 07:08 AM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
25th July 2010, 02:44 AM #17
Halfway there...
While cruising MIK's various threads (Interesting boat links) I stumbled across a video that shows a racing class that tacks their spar/sail around the mast.
Not the balanced lug rig that was being discussed here - more of a lateen / no boom rig - but definitely promising to me - I'm halfway there!
The video is here (wild sailing indeed)...
[ame="http://video.google.com/videoplay?docid=-7796071923054969577"]BARQUILLOS DE VELA LATINA CANARIA en Fuerteventura[/ame]
Very interesting to see them tacking the boat in as little 5 or 6 seconds with the sail drawing full - some much more practiced than others!
Now to figure reefing those buggers...
-
25th July 2010, 03:38 PM #18
Don't you love the starts?! Hilarious.
Yep, that's why these are called dipping lugs.
-
27th July 2010, 11:55 AM #19
Howdy Bruce,
It is great footage.
You can see the close relationship of different rigs here and how the names are quite arbitrary.. These are definitely historically and practically lateen rigs, however with the little standing luff (necessary so they can tack the yard quickly without it hitting the deck) they are closely related to the dipping lug as you noticed
There is a similar relationship between the squaresail and the balance lug ... which in some ways is a squaresail slid back so more is behind the mast. That's where it comes from historically.
And the arguements and confustification from uncertainty about what is a gunter lug and what is a gaff rig is hard to tell sometimes. This can get nasty when pedants (like me) try to be very careful about what we call a yard and what we call a gaff.
All the rigs that were born from the squaresail call the top spar a yard.
The best indicator as to which sail type is the history of the boat type. Here the boats are Arabic/Mediterranean types, so clearly are a Lateen.
MIK
Similar Threads
-
Balanced lug rigging question
By ausie in forum Michael Storer Wooden Boat PlansReplies: 16Last Post: 9th May 2010, 05:32 PM -
Tacking and job assembly for beginners
By Grahame Collins in forum WELDINGReplies: 2Last Post: 24th February 2008, 03:55 PM -
well balanced hammers
By mic-d in forum HAND TOOLS - UNPOWEREDReplies: 2Last Post: 25th October 2007, 09:32 PM -
A Tacking Terror
By masoth in forum WOODWORK - GENERALReplies: 7Last Post: 26th March 2006, 04:48 PM