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Updated June 2025 Mainly technical & theoretical aspects of Radio Sailing I'm interested in radio-controlled racing yachts. I campaign a fine wooden hulled
Ravenna in the UK 6M class, shortly to be joined by an equally fine Romanza,
both Bantock designs. I have acquired a 36R Raptor and sail it
approximately annually. For some while I sailed in the International
One Metre (IOM) class, most recently with a Pikanto,
and hope to return 'real soon now'. Previously I campaigned an Italiko
IOM, and before that an Ikon,
highlights being various mid-fleet placings at European and World championships.
In other classes, I have sailed a Marblehead Quark, a 10R Puzzle, and
vane-sailed an A Class and a 36R. For some years I also campaigned a Sword
A Class, my highlight was 9th place in the
World Champs at Gosport in 2005. My "Bakers Dozen" A Class, built by Graham Bantock in Kevlar to Roger Stollery's
design from 1983 and the RA National Champion of that year, has gone to a good
home in Norway, courtesy of
Øyvin This site is aimed at technical and theoretical aspects of RC yacht racing. In particular, it has a number of spreadsheets to download. Although aimed at the IOM, they should be useful for any non-rotating fractional Bermuda sloop rig. With a side hustle on experimental data analysis Tutorials and conceptual explanations of the statistical data analysis of experiments mostly using analysis of variance (anova) techniques. I've been consulting in this field for, oh, over 50 years, and have found that researchers in the relatively new fields of computer applications are unsure of the application of classical methods. These pages are intended for educational purposes.
Site news & other interestJune 2025: Research Ethics June 2025: The analysis of covariance — Ancova — introduced in the Analysis of covariance page, elaborated in Covariance part 2, and its justification considered in Covariance part 3. June 2025: Multivariate Anova in the Data Analysis section, dealing with the anova for two or more measures considered together. Multivariate Visual Error Oval to visualise the significance of the multivariate difference between two group centroids. Multivariate Anova part 2 explores different data sets with different characteristics. Multivariate Anova Part 3 for an explanation of an unusual use of regression to explore a significant multivariate test. Multivariate Anova part 4 for some details of interest, here the assumption of homogeneity of the covariance matrix. June 2025: Restructure of the site to bring the Data Analysis pages up to the top level. May 2025: 3D-printed boom band -- STL files for 10 mm Ø and 12 mm Ø booms. May 2025: Marblehead sail measurement gauge -- STL files for 3D printing, to measure Marblehead leech / roach profile and various other dimensions. May 2025: Starting line with onshore wind illustrates one possibility for setting a reaching start line to take the fleet out to a first mark which then permits a fair beat to the windward mark. April 2025: Rules of Order for online virtual asynchronous international business meetings, assemblies, and committee work developed while chair of IOMICA and IRSA. April 2025: A page titled "Protesting For Dummies", being a careful explanation of what actually happens in a protest hearing. March 2025: Some pages in Other Topics illustrating the construction and use of a flotation tank and dry measurement jig for 6M boats with 3D printed equipment where possible, starting with 6M tank and jig construction, establishing 6M Waterline endings in the tank, 6M boat in dry jig preliminary measurements, Stern station measurements, and Bow and girth station measurements. March 2025: Some sailing events seem to have increasingly bad-tempered bickering over incidents on the water. I thought a short 2-minute welcome from the Chair of the Protest Committee might help to lower the temperature. Site contentThe radio sailing content is classified into the three major headings of Design, Build, and Race. Anything not fitting that scheme goes into Other Topics, including Links and Reports. The data analysis content is listed under Data Analysis. Scans of some International Radio Controlled Model Yacht Championship programmes and results are in Gosport 1975 (plus an article on Radio sailing history by Norman Hatfield), Durban 1978, Ottawa 1980, Dunkerque 1982, Ullnasjon 1983, Gothenburg 1987, and Berlin 1988. Articles originally published in the American Model Yachting Association's (AMYA) excellent "Model Yachting" magazine are now reproduced on the site by permission of the Editor.
Stiffness (AMYA MY
#173) (Fall 2013) * Article reports data from wind tunnel, towing tank, or other experimental setting Commercial stuffI previously manufactured an adjustable spreader.
2025-06-16 Some site statistics: approx 260 pages, 2200 images, 60 spreadsheets... ...free from those nice folks at NewsNow |
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©2025 Lester Gilbert |
