It got a bit wet and cold today so I took to another sail
and it is taking me a lot of effort to not go too the others but I'm afraid if I do I will get a kick in the butt from Landyacht so we shall just leave them in the corner
.
Making progress slowly with the other Chassis.
Ron
Hi Lads,
Just a quickie update on the sails. The old Neil Pryde is at the sail makers awaiting pick up. The Carbon Bug is progressing a little. I just may have to put it in a thread of it own, but it is looking good.
Ron
Right Ho! Back from the sail makers and pretty happy with the way it runs up the Mast.
Have a look at it but more importantly the way it is positioned on the entire frame.
Remarks please.
Ron
Ok! Lads,
This is a general Call to Arms..
Looking at what I already have the the RAF Dynamic will only be suitable in heavy winds for Occum's Razor and Light Winds for Schrodinger's Cat.. So where do I go from here? I ask..
Well seeing as I have 2 x 11mtr sails how does a cut down to 7mtr, approx', sound??
From a SEVERN 11mtr Sail I can get a Land Yacht Sail of approx' 4.5mtr Luff, Leach of
a little over 4.6mtr, sail head 1mtr and Foot of 2mtr.
Do I have any that may disagree with a sail of this size going on a Pac' Mag' ?
Once again any and all comments will be accepted happily.
Ron
can i suggest that you lay out a sail, and use some big sticksetc to mark where you reckon to cut. we can then suggest in,out .up down etc till a good profile is reached
Thanks Landyacht,
I have removed the Luff Pocket and removed what I reckon the Foot should be. The Pattern suggested by you guys has also been laid out on the sail. I guess I can take a pic' of that layout and post it, though it can't be shot from directly above. The pic' plus my previous description should give you something to mull and comment on.
Thanks again and regards,
Ron
Landyacht,
The things I do for you I took these at 10.30 tonight Blowing a Gale and showers.
Anyway have a look and tell me if they fit the Bill
Ron
that looks fine ron. keep in mind this is going to be a fairly flat sail, so you will want to reshape some battens to give it some fullness in the front 25% of the sail.
having such a big head on the sail will require a rather stiff mast to stop it flapping too. otherwise go for it.
Thanks Paul,
I intend to use a Gastra Ignition 5.5mtr Mast cut down to suit the Sale and Occum's Razor. Do you think that will be stiff enough? It was used in conjunction with that sail.
Dave, AUS02 is into Speed Sailing -----Big Time. Anyway I can always stuff another mast head inside to stiffen it more-------------------If needs must.
Ron
Landyacht,
Here is another Curly One for you to mull over.
The Luff Pocket; Should I Cut it Parallel or Shape the Sail to account for any taper in the Original
No I am not joking just thought I should have a bit of advice before I go putting anything together permanently.
Ron
I shall chuck another Curly One at you Paul and whoever would like to put there 10cents worth in as well.
I have cut the Curve to reshape my GASTRA, OOPH! That sounds Painful 
.
Question; Studying the Pattern Curve and the Original Leading Edge Curve, they appear to be very much the same +-20mm max deviation.
Now if I lay the Carbon Cross Hatched section in + the Original Luff Pocket Less around a Meter and again with a little manipulation of the Sail Foot I get pretty much the same shape required for the formula as Laid by Required Sail Shape. My point being with materials such as used in these sails will it hold up under the usage conditions of Land Yachting if I, standard reinforce the Luff Edge clear material in and then have the Pocket sewn in as well
I hope this is clear enough to be understood. The Luff Pocket no doubt will have to be manipulated a little as well to Keep the general integrity of the Shape.
Ron
PS. I think I should lay this one on Stephen Hawking as well[}:)] it could help solve the Universal Question.
Ok! So no takers on this one?
To Late to late she cried and waved her Wooden Leg.
I decided to Bight the bullet and go for it. What the total difference from the suggested curve is amounts to a ****teenth. If one places the Pattern, placing the top and bottom against the pattern top and bottom the curve is flattened under 20mm.
Given the stiffness of the mast being used this can't be a bad thing surely Doing this has allowed me to reuse the Reinforced Leading Edge section of the original sail Study earlier pic's (Waste Area). However the Question Still Remains, Should I reuse the old Luff Pocket or should I reshape it to a Parallel Pocket
Other than the last Question I am satisfied with the new shape but Damn! Is it ever going to be a large SAIL
Ron
Id go with a parallel pocket as Im not a sailmaker and have not yet done any experimental sails with big pockets successfully
Thanks Landyacht,
I will go with your suggestion, however in the other vein If the sail were reshaped to suit the original Gastra Pocket with all its reinforcement bits and possible aerodynamic shape would be good but I ain't going there, tooooo many $$$$$$$ involved I would imagine. It is just a thought.
Ron
PS the sail looks good at this stage.
Oh! Poop! Well I literally did as you suggested Paul, I cut the Luff Pocket to exactly parallel. It doesn't quite work that way. Starting at the top I measured the Half Width as it is folded in half and transferred this measurement down the pocket and cut as I went. Hm! Perhaps I should see how it looks wrapped about the Mast Base.. Oops! Cart before the horse. If I sew that lot together it will be a tight fit I think. Because of the design and method of trapping the Sail Head at the Mast Top The Luff Pocket is fairly narrow and I didn't take this into account and allow a little more room at the bottom of the pocket to accommodate the mast base. Oh Well! I will have to make a new Pocket I guess.
.
The Trials and Tribulations of a Land Yacht builder. One can not be a Master tradesman in all trades. I am a Jack of all trades and Master None
Ron
