A discussion about basic pros and cons for swinging centreboards. And dagger centreboards. Centre Board means the board is in the centre. Which is different from a Lee board which is too the side.
Racing shows that what you know is what you know. It doesn’t matter if the boat is less than perfect. So where is it best to put in the effort to improve results. Boat setup, knowing how to adjust for different wind conditions, practicing skills until they become automatic, sailing as much as possible … and teaching others.
[Translate] This is a reprint of an article from the OzGoose website with a preamble by me and some reorganisation to make it more useful to owners of other boats. As you may now we are one of the main developers of the knowledgebase for lug rigs, setup, rigging, control and performance. See the list […]
[Translate] Several of the PD Racers were building NACA foils. The discussion was that several were feeling that they couldn’t make them to a greater accuracy than 1/16th of an inch. A CNC machine would take the fun out!!! 🙂 The efficiency of NACA sections rely on getting very close to the required shape. Working […]
There are lots of tips for building and designing boats on the net.“Rules of thumb” are often quoted to help with the calculation of how much sail or how much keel or centreboard area or how big a mast is allowed to be and many other areas. Can a boat be stretched or shrunk or lengthened?But how correct are they? Are they the best guide?
Joe sent me a question about why his self designed sailing rig for my Electric Quick Canoe design works better if he moves the leeboard forward of the theoretical point for a balanced helm.He has stumbled upon a nice observation of a design element called “lead” (I lead you … not the metal Lead).I explain
The OzRacer RV sailboat is meant to be a very simple boat that can be homebuilt.Most build it to get on the water quickly, but Mark Milam has done an amazing job of overseeing a project combining his work with that of a boatbuilder friend.Wonderful woods, some great detail design and the very best fitting of a windsurfer rig to a dinghy that I have ever seen.
[Translate] A sharp eyed customer notified me that I hadn’t included a method to right the OzRacer RV. The nice thing about the OZ series is that all the boats come up with very little water inside when righted from capsize. Also the wooden mast doesn’t allow the boat to turn completely upside down making […]
[Translate] It is a bit hard finding information on my forum as the list is not very ordered, so I have attempted to fix this.There is a general building section then each boat is in alphabetical order.To see all the images you may need to become a member, however, they are a good bunch and […]
One of the most important things as a designer or sailor is to keep an open mind, but also to be able to analyze things in light of real experience and prior knowledge.This article, after a bit of a spiel, goes on to give some great resources that “opened my eyes” at different times in my life.They focus on areas of structural design, sailing, sail aerodynamics and touch on a bit more.
Fibreglassing 3 – bigger areas – centreboards, rudders, leeboards, keels and larger hull areas requires a different method. Normally glass is draped dry over a clean dry surface and epoxy is applied to the outside and pushed in through the weave.
When is it worth fixing an old racing dinghy and when is it best to ditch it?
[Translate] A quick jump to the end for those wanting to know the outcome. George’s club yardstick is 1117. That’s the same as an Enterprise or slightly slower than an OK. George is an experienced larger yacht racer and you can see his learning curve in this article. I’m sure there is more to come […]
Gyula, who built the first European OzRacer in 2008 wants to modify it for an outboard motor.This modification will work for most OzRacers, Oz Goose, PDGoose and PDRacers.
[Translate] Why Epoxy is Good for Boatbuilding – Prevents Rot, Gapfilling, Good Adhesion A 30 year review of using epoxy for boatbuilding. How radically everything changed in the 1970s Glues – Epoxy vs Resorcinol – short answer Glassing – Epoxy Resin vs Polyester Resin – short answer Preventing Rot Pt 1 – The Good, the […]
In general I don’t like most sailing books and most sailing lessons.I think that a learner doesn’t need to learn many new words. Also because they don’t explain the correct principles in the beginning their explanations become really complicated.If you understand how to use a sail to get power – when it is at maximum power and when it isn’t it all becomes very logical.
[Translate] The world speed record for PDRacers is currently 6.5mph. During the recent South Australian Wooden Boat Festival (pic of three of our five PDRS on the beach right) there was so much wind that many events were cancelled, but Michael Storer had a crack at the speed record for PDRacers. Actually we briefly thought […]
Reprint of an article I wrote a few years ago for Watercraft magazine in the UK.The article points out why I think most of the discussion about boat design being a “compromise” is rubbish and taking that point of view means that the design is sure to be compromised.What happens if we don’t accept the compromise?