Ever wondered about tank testing of the Flying Fifteen and computer simulation of the same??
Well, click here and take a look!
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When Brett was here last, over a pint we go to talking about Flying Fifteen hull shapes. For us Club Sailors this can be quite an education…. 🙂
Brett was saying that on flat water (like Datchet), really the difference between the Mk IX and Mk X Ovington’s is going to be minimal. That’s certainly our experience here and indeed the Mk IXs go like a bomb in our waters.
So what is Brett up to with hull shape? His moulds seem somehow to now be at Composite Craft and have had some tweaking to bring about Charles’ latest boat. Brett says that the basic change is to make it a bit flatter at the back, because it is very hard to reach a Fifteen in breeze, under three sails, so that it is dead upright. It’s good to know that even stars like Charles and Brett have that problem…. Remember that 3860 is a Brett-Boat and in the hands on Mark and Tony it is a pretty quick boat as it is. Charles has told me that the computer simulations of his latest hull indicate that it should be 8 minutes quicker than a Mk X over a 100 minute race. Interesting – not borne out in experience this year I don’t think, but Dave Rickards, who sails with Charles quite a bit, tells us that the boat actually does feel like it has a good speed edge to it.
However, it maybe plays to our own little bias in our boat, that at Datchet our Mk IX seemed a little imperceptible bit quicker in a breeze. When we had the Mk IX we wondered if it was keel position giving it the edge, but now Brett’s remarks about his hull shape have us wondering….