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03.05.2021, adminDiscussion in ' Sailboats ' started by slomoshunSep 25, Log in or Sign up. Boat Plywood dinghy sailboat tracking Net. After 40 years of sailing other designer's dinghies, I decided to design my own 14 foot plywood dinghy.
Now I need plywood dinghy sailboat tracking decide on the sailplan so that I can order sails. I am aiming for about 10sq m to be sailed bu a heavy singlehander, plywood dinghy sailboat tracking lighter 2-up. I have looked at a number of boats to get inspiration for the hull. The closest boat out there is the phantom, but I have moved the widest point back and made the entry sharper and longer.
My considerations for the sailplan are: Large furl-able jib with smaller than normal main. A lot of mast rake to reduce the load on side stays, as the hull is fairly narrow in the side stay area. Loose foot like a laser.
Full length top batten. Any comments or suggestions will be welcome. I like the looks of your hull! Can you post any numbers? You might consider going with a squaretop main. It has numerous advantages including a more effective planform and automatic gust response. Good luck with the boat! Here are some collections of dinghy numbers that may or may not be helpful-and Eric Plywood dinghy sailboat tracking Design ratios which can definitely be helpful:.
Design Ratios-Eric Sponberg. Dinghy Specs-pi boatdesign. Dinghy Statistics-very complete!. Doug LordSep 25, Thanks for the reply and documentation. My hull weight is just under 60Kg and I still have to add paint, centreboard and fittings. A Maximum width is from aft I have made the hull pretty still with plywood frames under the side decks. I planned to leave my options open to add wings. I will go through all the data before finalizing my sail spec.
I weigh in at kg, so I want to initially sail on my own, but the cockpit is roomy enough to sail as a 2 up without trapeze or spinaker. Here's another on the same idea of a high performance 14' planing dinghy. I also looked at the underside of a 49er hull.
I chose the construction method of the Phantom as I have previously built a Phantom and found it a quick and easy method. I had designed mm wide wooden wings but did not incorporate them into my hull. Plywood dinghy sailboat tracking a couple of quick thoughts, Too much mast rake will affect downwind speed, and make main sail hard to set effectively down wind in the light.
Look at the newer international 14s, they have moved the mast well aft plywood dinghy sailboat tracking increase jib area, which would get your stays to a wider point on the boat. If you mostly plan to sail alone, I would strongly suggest a self tacking jib, or at very least lead the jib sheets further back than normal to allow you to quickly access them after tacking.
It may just be the angle of the drawing, but the centreboard looks a long way aft for a sloop rig. Agree with Doug on the square top main, they are not as scary as they look handling wise.
Only if your sail maker has some experince with sqaure tops though Looks great though, good luck. PS plywood dinghy sailboat tracking you already built Plywood Dinghy Sailboat Jobs the hull, if so can you post some photos? JRDSep 25, A pic of the enigma Plywood Dinghy Sailboat Online hull Thanks for all the advice. The centreboard is about mm behind the mast. I thought that this was a long way back until I saw the paperjet 14, then it looked ok.
I did not think of the mast rake being a problem running in light wind. I will reduce it a bit. I intend to use a jib with a long foot to make plywood dinghy sailboat tracking jib sheets easier to reach. The ends of the sheets should also be tied with shockcord across to the weather deck to make them reachable.
I like the idea of a square top sail, I suppose it would push the cost up. I have attached a pic that was taken before I finished the decking. Looks good so far. I've seen a PaperJet in person, and plywood dinghy sailboat tracking are two mast positions - one for jib-less usage and one with the jib. There is quite a difference between the two because Dudley Dix was moving it so the CoE was in the right spot for the CLR in either case cat or sloop.
The PaperJet looked like a handful to sail with jib plywood dinghy sailboat tracking main singlehanded. I'd seriously consider the self tacking option - you won't lose very much benefit from the jib, but the reduction in jobs to do on tacking and gybing will make a difference. It really would not cost much more to do, and then you could function with a continuous mainsheet that connected to the self tacking jibsheet tail - so there is only one sheet in hand on maneuvers.
It also reduce the need for cam cleats and fairleads. The Swiftsolo google it has got a very complex but neat single sheeting system for main and jib. You don't need to go to that level of complexity, but I sure would look very hard at a 29er for ideas. My boat is similar - and boy does it get wet. If you use a sailmaker who has experience with the squaretops - Glaser, North Suncoast. Make sure the head plate is big enough and the top diagonal batten is well designed - this is the most critical area to get plywood dinghy sailboat tracking if the top is going to behave right.
Each batten should have individual velcro tensioning to allow control of curvature. Plywood dinghy sailboat tracking sure your sailmaker knows exactly what Plywood Dinghy Sailboat Work tube mast you are using and it's characteristics.
It may be better to choose a sailmaker who knows the mast well and adapts the sails to match. Get their input on standing rigging needed - it will help define if you should consider lowers, uppers and the need for a mast ram. Tuning a boat like this is critical. CutOnceSep 26, Here is a diagram of the Swift Solo. It allows you to adjust the slot with a "relativity" control and works very. I used a variation of it on Plywood Dinghy Sailboat 10 my 16' foiler.
The bottom line is that the mainsheet controls both sails. Never plywood dinghy sailboat tracking to move the mast or board. Swift Solo Sheeting System Doug LordSep 26, Nice work, its always great to see someone who has followed through with their plans and built something to their design.
Something I forgot to mention with plywood dinghy sailboat tracking top mains is that they are generally matched with carbon fibre masts that are quite stiff.
You should talk to your mast supplier and sail maker to make sure what you are ordering will work together which ever sail profile you choose. If you are trying to keep your costs right down, an untapered mast along with dacron sail will be the cheapest. Im not sure how Dacron would go with a square top main, as they are ussually based on film composite sails with full length battens.
Another boat you could have a look at for ideas is the New Zealand Jollyboat designed by John Spencer. These have very simple construction and have a relatively low cost rig and plywood construction, and they are annoyingly quick to race against, with and without a crew, so have some similarities with what you are building. Tacking was a pain and not being able to ease it quickly in gusts also made the boat prone to being knocked down a bit in gusts.
If you are just cruising in straight lines alot its good, but if you are racing and doing alot of manouvures then you may find that the benefits of having an overlapping simply rigged jib will be outweighed by the amount of time you spend sailing at half speed while you are trying to handle two sails at. Whilst I have not seen one first hand I understand that the Swift-Solo has the jib rigged to trim in tune with the mainsail with a single plywood dinghy sailboat tracking and some adjustments on the relative tension of both sails.
Last edited: Sep 26, JRDSep 26, I agree with others here that its good to see someone actually building according to their ideas rather than just speculating about performance. One thing I dont understand is that you intend to have mast rake to reduce load on the side stays. I am not sure that is right. I can see plywood dinghy sailboat tracking raking the mast back will cause the dead weight of the mast and sail to reduce shroud tension but that is a very small effect and can probably be neglected.
Apart from that, the tension in the shrouds for a given wind loading depends on the angle between the two planes defined by the axis from the mast foot to the hounds and by the deck attachments for the two shrouds. As I am sure you realise, this angle is a compromise between wanting to allow the boom and sail to swing well off the centreline when sailing downwind and also wanting to give good support against the mast falling forward downwind and wanting to increase forestay tension when sailing to windward.
Once this compromise has been established, I think the load plywood dinghy sailboat tracking the shrouds for given sailing conditions is almost independant of mast rake. If you do decide to fit this dinghy with sitting out racks then you could obviously extend the racks sufficiently far forward that the shrouds can be attached to them giving a good wide shroud base.
On the other hand, with such a triangular shaped hull as seen from above, you might find that you dont really use the forward part of plywood dinghy sailboat tracking racks for sitting out, in which case you could save some weight and windage by having relatively short racks not extending as far forward as the shrouds. Plywood dinghy sailboat tracking point is that the use of a trapeze wire reduces shroud tension.
John PerryPlywood dinghy sailboat tracking 27,
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