Woodshop Project Help On boat design?
I am doing a project in woodshop to make the fastest sail boat that will travel; down and 8ft long canal; I am given limited materials, a 6in by four in block of wood thats about 3/4in thick a dowel rod 90square inches of any sail material (please3 make suggesttions for material) and a few other smaller peices of wood i was wondering if any one had any good tips suggestions or idea for me thanks
Related posts:
- What’s a good woodshop project that can be finished in less than 4 weeks?
- any ideas for a woodshop project?
- I need a woodshop project for class an di dont know what to do?!?!?
- Wooden Boat Plans-254 Quality Wooden Boat Building Plans
- 10′ X 12′ Saltbox Style Storage Shed Project Plans – Design #71012
The fastest a sailing boat can travel is when it is on a “reach”. This means it has the wind direction is from 1 side. For a “square” reach, the sails are at somewhere near 45 deg. to the direction of travel, with the wind at 90 deg.
But with a good wind, and resistance to “heeling over”, the sails can be pulled closer in than that. They are “close hauled”.
To obtain anti- rolling stability, I would suggest a catamaran design. This then makes use of the upwind hull to counter side wind pressure, and can avoid having a fin, although a fixed fin would help to prevent the hull being blown downwind (across your “canal”).
The trick is to have reasonable buoyancy, and minimum immersion in the water, and streamlining to minimise drag.
Regardless of sail design, if you can work out the centre of pressure of the sail, and the centre of lateral resistance of the hull, and place the SP over the CLR, the force of the sail will not tend to make the boat either turn towards or away from the wind direction. The fin must be taken into account when determining CLR. Possibly the easiest way to find CLR would be to build the model, then apply finger pressure at 90deg. at various points along the centreline of the model, until you find the point where the model does not rotate when pushed.
The CP of the sail should be as near as reasonable directly over the CLR. Still, a small rudder at the rear should provide some trim adjustment, but if you find too much rudder offset is necessary, adjusting the CP is recommended, to avoid the rudder drag being excessive.
Mylar is a material used for drafting drawings. It is light and tough and smooth, and can make excellent sails. I don’t think you will get to be too fancy with sail design, so probably a simple triangular sail might be best. But, it will require a boom, and if your dowel is limited in length, that could be a problem.
Getting the boat to perform best, will mean testing. It must run straight, it must not topple, and the sail will need to be close- hauled almost to the toppling point. Then you should have maximum speed.
This extra motion delivers a seriously smooth finish in a lot less time.
Oscillation technology is quite new in drum sanders. Jet / Performax makes an incredible single drum sander, Steel Town only manufactures a twin drum while Delta only makes a single, Powermatic makes a great twin drum sander.
The sketch is just a plan to organise all of the tools that you’ll be using in your wood shop.