Wednesday, April21, 2021
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How to Point Higher

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NOTE: This is an article I wrote for our local yacht club newsletter.

I have been racing at SPYC for 5 years and that represents almost all my racing experience. I am thankful to the club for this experience and it has helped me a great deal to become a better racer. I am also grateful to other skippers who are far better racers than I will ever be for sharing many insights and tips on sailing. While I do not consider myself an expert racer, I would like to continue the tradition...

More Low Friction Rings

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In the first article of this series we gave results on using fairleads and showed how the added friction is not significant with low deflection angles. In this article we consider using low friction and other standard rings with high deflections and analyze how these can be used in systems to provide simple and inexpensive mechanical advantage. Again we used the digital scale shown on the right to make the measurements. This scale reads up to 220 pounds with 1/2 pound resolution.

Fairlead Friction Explained

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Have you ever wondered hom much, if anything, you are giving up by using fairleads instead of blocks? How much friction is there. How does this compare with a block? Does the style of the fairlead matter? This article attempts to answer these questions.

Jibsheet Fairlead

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Do you find that you get wraps on your jib winches or just want give a better lead angle to the winch? In the last race we did, a new crew member got a wrap so tight that the only way to release it was to cut the sheet with a knife. We strung the lazy sheet to the secondary winch and took the pressure off but that was not enough to free the wrap, that is when the knife came out. The winch manufacturer recommends between 3 and 8 degrees as the ideal sheeting angle.

Mainsheet System Analyzed

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It isn't often you see a completely new way to rig a mainsheet. I saw this posting on Sailing Anarchy and though I would share an analysis of what they are doing and why. Here is a picture of the boat

More on Rings as Twings, Inhaulers, and Twings

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I have several articles on using rings as inhaulers and twings. This can be taken to extremes and the jib car can be eliminated and just the twing and inhauler used. It not only can be, that is how the TP-52 fleet is rigged. Here are some pictures to show it. This is a picture I took a couple of years ago at the Big Boat Series in San Francisco of the TP-52 Mayham

Calibrate a Marine Compass

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Everyone understands that a marine compass needs to be calibrated. It is easy enough to find articles on how to calibrate a marine compass but I found them lacking in two areas. First, they did not explain what was really going on such that I could understand why things were being done. Second, they all recommended you don't actually do the calibration yourself but rather hire an expert.

Low Friction Ring Mechanical Advantage

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I recently saw a picture of a three stage cascaded block system using low friction ring instead of blocks. This article analyzes such a cascade and shows how to calculate its effective mechanical advantage. The techniques shown can easily be extended to other systems. I will discuss one such system that I use on my boat.

Make your own Telltails

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I admit it, this is sailing nerdiness at its extreme. When I was a teenager I was a sailmaker at Spencer sails in Huntington New York. That was almost 40 years ago! I used to make the telltales when I worked there. It was always fun bringing pockets full out to customer's boats and giving them away like bringing cake or wine to a visit.

GPX CSV Waypoint Editor and File Converter

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New tool to enter waypoint files in either gpx or csv format, add new lines, convert them to either gpx or scv format and download them back to your computer. This is useful for creating and editing waypoint files for StartLine the new racing application for Android form L-36.com

Buying New Sails

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New sails represent one of the biggest investments you make in your boat. So when getting ready to make that purchase what things should you consider to make sure you get the product that best fits your needs and to insure you spend your money wisely?

Bluetooth GPS Receivers

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In this article, I will explain why you might want an external GPS receiver, what the various Android drivers do, and why I picked Bluetooth GPS Provider as my preferred app. Finally, I will explain all of the Preferences in Bluetooth GPS Provider, something you will not find anywhere else.

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