This sounds an interesting and probably feasible project - I wish the best for it. I am not an open water swimmer but I can easily imagine that...
As I mentioned above, Ian Farrier wrote about a mechanism with extra pivots and links to keep the float vertical as the boat folds and seeing the...
I do sympathise - last time I was looking I found it hard to find good aerodynamic data for fabric sails. I ended up with some approximate data...
We have been putting together some equipment for hull drag measurement by towing. There is a bit about this in the meeting report at the link...
Yes, when I built my sailing dinghy which was first launched in 1978 I made the Elvstrom type bailer myself from stainless steel sheet using basic...
Our plywood sailing dinghy was first launched in 1978 and is still sound and in use today. It has probably had more than average use for a...
I recall that some years back Ian Farrier in one of his writings on the internet said that he had considered a mechanism like this that includes...
My own attempt to meet a similar objective is described here:...
A follow on from my post above. When I see graphs of measured sailing boat performance I do wonder about the reliability/accuracy of true wind...
Interesting plot - thanks Doug A few comments: I find the way the data is presented is confusing. The graph is labeled BS vs TWS but since the...
There is a copy of the AC75 class rule here: AC75 Class Rule - Amateur Yacht Research Society...
Intriguing diagram Doug, I would be interested to hear more about how the data was obtained. When you say boat speeds and headings, is that...
I have just looked again at the video from Artemis Technologies and I now realise that their claim could be interpreted in different ways. The...
Seems optimistic - see this link: Press release: AC50 catamaran will do 20mph SOG against a 10mph tide in zero wind? - Amateur Yacht Research...
Wet Feet - I wondered if you meant to say 'finding the smallest face and cutting square', at least for the hull skin panels. If you use the...
Hi Mike - even with 3D router control you wont get 'flat fits' between parts - you would have small steps on the edges of parts. Perhaps that...
Since you say you are working with plywood I wondered why are you are considering 3D routing? If the panels of a chined hull are cut with 2D...
Have you come accross the Michlett software covered at this thread here: Michlet 9.33 Released...
Sure Doug, I dare say you are right, but the OP says he already has a pair of C foils kicking around and he also says that he is not intending to...
Hi Graham I have no experience of sailing the kind of hydrofoil catamaran you are talking about, my practical experience of sailing hydrofoils was...
