posted on March 12, 2014 14:43
Members of Clontarf Yacht Club are building an IDRA14. Below is the most recent update from the club.
Planking has commenced! The starboard garboard was laid on Tuesday 7th January 2014. Steamed in a simple plywood box; held in place with sticks and clamps; glued with the mighty SP106. We are entering on a lengthy repetitive process. We have 24 planks to lay. Each will be shaped, steamed, sanded, rebated and sealed. Each will be tried for fit and adjusted. The Sitka spruce is beautiful wood to work with. The boards have tram-track grain and a honey brown colour. They are easy to sand but offer a greater challenge when rebating. Steaming has taken about 20 minutes before the plank is supple enough to get the twist needed to make the bend to the stem. When clamped lightly in place for 24 hours, it keeps the shape.
Although we are gluing the boat with SP106 epoxy resin we are also keeping to the traditional boat building method of riveting. Copper nails and rivets were sourced from Toplicht in Germany (www.toplicht.de) who incidentally has a wonderful range for anyone fitting out, renovating or building a boat.
The mast and boom are ready for delivery from Superspars and should be with us in the coming month. Thanks to Alan Henry for providing the spec to Superspars.
We are speaking with a number of sail-makers at the moment to decide on which company will dress 14/166 and will be back with news on this soon.
Ruairi Grimes is busy with the conversion of the drawings over to CAD using Solidworks. On a recent visit he showed us his drawing of a Mermaid. It was amazing to see the boat onscreen and be able to inspect any construction element in 3D detail. The software further allows the development of individual planks i.e., in-situ planks to be flattened showing their true shape. There may be an opportunity in the future to check a number of these full-size developments against our own templates.
Ruairi is undertaking a number of design innovations for 14/166, namely:
1. Bulkhead. We will be installing a bulkhead forward of the mast step where the centreboard casing ends. This is to prevent the forward rush of water in under the deck in the situation of a capsize and of course make it easier to displace the water to the back of the boat preventing the submarine effect. The bulkhead will be fitted with inspection hatches and as suggested by Alan Henry, perhaps a place to keep a beer cool and your sambos dry for between races!
2. Chain plates and Triangulation. A system of force-triangulation to strengthen the boat. This will incorporate the chain plates and mast-step using cables to take the load exerted by the shrouds and halyards when underway. The chain plate knees are also being redesigned making them longer to absorb more of the pressure; these will be laminated similar to the stem and transom knees.
3. Underfloor buoyancy. We are working on a way to fit buoyancy under the floorboards or a method of displacing the water from the bottom of the boat. Any thoughts on this topic please let us know.
We would like to thank Ruairi for the amazing work he is doing and we know the finished product will benefit generations to come.
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If you’re looking for us over the next month, we’ll be planking and riveting....