R Speculation

Originally posted by yellowwelly Graeme had that for the first time in twenty years the other day... .... He was reading Clive's book at the time.

Have just expressed an interest with rs for a test sail. If things go to plan, they are thinking about taking the boat out in a road show to take to clubs.

Originally posted by jeffers Originally posted by JimC Originally posted by jeffers would not gybe a N12 in anything above a F4 without a t-foil rudder as the chances of a swim were around 80-90%... Must be a bit of a surprise for the last 50 years of N12 sailors to hear that... I am only going on what I have been told. I have never set foot in a 12 (as I am far too heavy to crew one and don't fancy all that faffing around at the back.

Paul. I suspect I know who you chatted to. Gybing some 12's was always tricky, the ones that tended to go bow down , such as a foolish or baggy. Having said that, we did not tend to back off the gybe till a good f5. The foils have made a big difference as you can trim the bow up and eliminate the nose dive, and the slight upwards slant on the wings give more roll stability as they try to resume level flight. We were giving in 29 knots in the burton cup last time round, well not every lap. It's interesting the 12 is the only class to have done this. See James Mays programme on model gliders for a laypersons explanation.

A foil will probably have an effect on any boat. But I would only expect to see them on a development boats, as it's cheaper to add stability by de tuning the hull or adding length.

They have other effects such as flattening the stern wave, lifting the stern to reduce displacement. This also means that you can have a much thinner waterline at the stern. The DCB has virtually no stern buoyancy, it sinks if you stall the foil if sat at the back. It planes more like a motor boat balanced on the rudder and a planing surface further forward. As Daniel said they are expensive. Almost as much as a decent second hand 12.

As for GRF. A 12 with a foil would have worked well for his diminutive size. And he could have even tried his experiments with more like minded encouraging people. Though we did ban tunnel hulls in the 70's. Though the boat would probably have scared him.

Andy

Edited by andymck - 14 Feb 14 at 11:26am

I don't think you should post that sort of thing Mr Blue Cow (or is that Ms Bercow?)

Jim. Think I'm safe. No court order in force. All the allegations are out in the public domane already.