Welcome to L-36.com
High Strength Soft ShackleRecient work by Brion Toss, Evans Starzinger, and myself has led to the development of a high strength soft shackle that Evens has tested to 230% of line strength. The secret to this added strength in primarily an increase in the strength of the knot, the weak point in conventional soft shackles. I should point out that Evans testing shows conventional soft shackles, with diamond knots, test at 170% of line strength, considerable above the "higher than line strength" number I have been using. While these two statements are consistant, the more percise number is considerably higher and higher than the testing I had done at NE Rope.
L-36.com Forums ReturnIn honor of the April Fools prank by Sailing Anarchy, I am putting the Forum back online. Please feel free to post.
There are two forums, one is a general topic and the other is dedicated to rope, splices, and soft shackles.
New and Improved Used Sails ListingsThe "Used Sails" tab has been improved. It includes a new vendor, Second Wind Sails, and is easier to use. If you have ever looked for used sails for your boat I think you will like what we have to offer.
Find used sails that fit your boat from multiple vendors, North, Minney's, Pineapple, Beacon, and now Second Wind Sails. All presented in terms that relate to your boat. Just enter the brand of your boat, pick the specific boat from the list, and you will get a list of sails that will fit your boat. You can limit the results shown by filtering on sail type and, in the case of jibs, jib size. If you don't specify a sail type, all types are displayed. Previously, nothing was displayed and that was confusing some people. We filter the vendor results eliminating sails that we know will not fit.
This is a 93 % jib.
The clew is about 0 feet above the tack.
The luff is 91% of the forestay entered or estimated
Click HERE to get Contact information
Analysis of a TackUsing GPS Tracking Data to Analyze Race Results
Small Things - Big WinsDo you ever wonder what the big difference is between the boats that consistently finish in the front of the fleet and the boats that don't? Sure, sometimes it is just one or two big things; maybe a brand new set of sails while your struggle along with sails 5 or 6 years old, or maybe you think they have some uncanny way of always being on the correct side of the next shift. But after years of racing in all kinds of fleets I can tell you without a doubt that 95% of the time it is nothing so simple but yet something that can be easily attained. The magic factor is really a combination of a whole lot of small things that add up to a big difference and a big winning percentage.
The First Bend
Knives on a BoatAre you still using an old worn out knife? When I found it time for a new knife, I was amazed how much knives have changed. I recently purchased about half a dozen new knives as I explored the field adding to the way too many knives I already had. I scored the Internet for recommendations. I read reviews on Amazon. I tried knives at the local WestMarine (none were acceptable). In the end there were 5 knives I liked and would recommend. There are also whole classes of knives I would stay away from. This article will take you through the thought process and hopefully help you find the perfect knife for your application.
Automatic GPX File Marker and Route GeneratorThe set of tools that will generate a GPX file for your GPS has been recently fixed and I thought it time to make people aware of this valuable tool again. With two map clicks you can get a list of all the marks in that area, select the ones you are interested in, edit their names, and download a GPX file to your computer. These are USCG generated locations from the many volumes for all US territories. The search through all the volumes is done automatically. In just a couple of minutes, you can do what might take an hour to do previously. Please enjoy these tools.
Boating Electrical ABCsMany sailors I know find their boat's electrical system daunting. The very same people who will tinker with practically every mechanical device on their vessel, will for some reason, shy away from the electrical side of things. Perhaps this view is shaped by those salty-dog authors who dismiss electrical systems as new fangled, and prefer stinky kerosene instead. Or perhaps, sailors have forgotten their high-school science, although it is hardly more complicated than Ohm's Law. Regardless, you have nothing to fear, as electrical systems are very straightforward and equally reliable when properly maintained.
StartLine Racing on AndroidHere is some user input on the new features of StartLine:
"First of all, we had a great day. I got two really big compliments. One on the start and one on a tack. We had a down stream upwind leg. I made an early call for the tack, based on Startline's calulation of the layline. When we came out of that tack we saw that the upwind mark was still 50 meters upwind, but the current pushed us up wind. We were the only boat that had not over sailed that mark. Great."
Basics of Sailboat Racing
Velocity HeadersI don't think there is a subject so misunderstood than velocity headers. They can take an entire fleet and get them to all stop dead in the water where a boat that recognizes what it going on can sail right through them. I know because I have done it. We went from last to first to finish in a fleet where we were neither the biggest, fastest, or lightest boat and yet there they all were stopped as we went right by, sails luffing away.
Unassisted Mast Climbing -- a review of 6 methods
How to Fly a Spinnaker - Updated 8/30/2013This 8 page tutorial covers all the terms, positions, and tasks of flying a symmetric spinnaker using the end for end gybe technique.
I have had Papoose for 23 years and never used a spinnaker on her. Last two seasons we won the local beer can series using a free flying jib downwind sometimes along with our normal jib. But we always had to play catch up to the boats that used spinnakers. I decided to learn to fly a spinnaker so we could move to the next level.
I joined the crew of a very successful Tarten-10 for the winter series. I used a GoPro camera to document as much as I could. This training series of articles is the result.
Lazy Lightning (the T-10) uses end for end gybes which are said to be appropriate for boats up to 35 feet. It is much simpler to rig and execute than a dip pole gybe so is the preferred method for boats such as mine which fly smaller spinnakers.
This new tide page will show tide chart, table, and hourly tide or current. Search for a tide station by entering part of the name. Select from the list of possible stations. There is a list box that shows nearby stations if you want to switch locations. A map shows where the station is registered.
Using Bluetooth GPS Receivers with Android - UPDATED 7-13-2013
How to Point HigherNOTE: This is an article I wrote for our local yacht club newsletter. For background, so far this season I have come in first 6 times and second once. Last race we won by 4 minutes in a 6 mile race.
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 of sharing what I have learned in hopes of making other boats faster as well. In my case, there are two things that help Papoose win races. One is having lots of wind when racing against much lighter boats. The other is pointing ability. It is my hope that this article might help other people discover new pointing ability in their boats.
More Low Friction Rings
Fairlead Friction Uncovered
Unique Mainsheet System Analyzed
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 FairleadsI 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
Calibrating a Marine CompassEveryone understands that a marine compass needs to be calibrated. I am not an expert on compass calibration but got interested in the question when a club member asked me if I had an article on the subject on this web site. 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. Of course, because I only was presented with a how and a recommendation not to do it, I did not have the knowledge to judge if the procedure was going to be error prone if I did it without some of the fancy tools the professionals have. I kept thinking about it and doing a few experiments until I felt I understood what the goal of all these measurements was and how accurate they needed to be. Of course, I would be a fool if I didn't give the same advice, have an expert do the job for you. But after reading this you might at least understand what is going on and be able to judge for yourself if you think you know enough to calibrate your own compass.
7-Day Tide and Current ForecastImproved 2/27/2013 - Graph now goes midnight to midnight. Added title to each section.
Tables and graphs for selected tide or current station for the week ahead.
Table shows high and low times for tide, slack and peak for current. Also shows sun and moon events. Graph is as shown below. The final table shows the hourly values.
Low Friction Rings Mechanical Advantage
Make Your Own TelltailsBy: Ed Sinofsky
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.
I'm no longer a sailmaker, but over the years I have fine-tuned the design. As winter sets in, I always like to make a nice big batch just to keep myself occupied. I thought some of you might be interested to see how I do it.
2013 Racing Rules of Sailing -- When Boats Meet
GPX and CSV Waypoint Editor and File Converter
Buying New Sails?by Harry Pattison
Stray Current Can Drop your Mast
Rock Box Blue - First Look
Buying Used Sailsby William Posner
Phone or Tablet On Board?
Starting Line Apps
Starting on Time with GPS -- Getting to the line at the gun going fast
Weather Page UpdatesIt has been about a year since I reported on the L-36.com Marine Weather page. There have been many improvements to the page in that time that I want to share. The page has been well received and has hundreds of users. I thought it would be useful to point out some of the improvements for those of you who have not tried it recently.
Wind MapThis is an experimental page that will show the wind for nearby reporting stations. There are three sources of reports: Local and regional Airports, NOAA Buoy Data Center, and Local weather stations. The local version of this page uses all three. The wide area only the official stations which are from the first two. Please check out this site and give feedback. What do you like and what do you want to see added or changed?
No Shackle Toggle Halyard
UPDATE: New configuration shown!
|A 8:1 Vang system that is cheaper than using two fiddle blocks, lighter, and stronger. What is not to like? You just run the control line back to the cockpit where you put a cam cleat. You will likely need a turning block on deck but then you have the vang where you want it when it needs to be released quickly before you round up.
The second vang system shown is the 20:1 vang on Papoose. This is a unique system with some advantages that are discussed.
This page also has a link to 16 standard variations on vang systems.
Eventide Sails Again
|I am happy to report that the L-36 Eventide returned to the Bay on New Year's Day 2012. After our very well photographed adventures at the 2011 Master Mariners Race I faced a tough decision about whether to restore Eventide. Her hull had basically been sawed through from deck to just above the water line by the other boat's chain link bobstay, and her spruce mast and boom were shattered into multiple pieces beyond repair. Eventide had been so thoroughly restored by her previous owner "Chairman" Bob Griffith and given me so many good times that I decided that if I could find a used and affordable mast and boom that the hull was worth repairing.|
Creating the Easy to Use Waypoint and Route ProgramThis winter I am racing on a Tartan-10, not my L-36. We are racing the winter series out of South Beach Yacht Club and another one out of the Golden Gate Yacht Club. The skipper doesn't use a GPS and as I find them indispensable in sailing to a mark and in calling the layline, I brought my wrist version along. But first I needed to program in the waypoints and routes. What a pain. I used OpenCPN and plunked a waypoint down over the marks on the map. Entering the routes was the most difficult. That led me to build the waypoint and route editor. Then I thought, wouldn't it be great to just have a list of all the marks in the area and just check them off, rename them to match the names the race committee uses, import them into a program, copy and paste the race committee routes onto a page and press a button (after a little editing perhaps) and have a file you could download into your GPS? So I built just that.
Lazy Lightning racing toward the Bay Bridge
- Analysis of A Tack (using GPS)
- Small Things Big Wins
- Knives on a Boat
- Boating Electrical ABCs
- Basics of Sailboat Raceing
- Velocity Headers
- Unassisted Mast Climbing
- How to Fly a Spinnaker
- How to Point Higher
- More Low Friction Rings
- Fairlead Friction Explained
- Jibsheet Fairlead
- Mainsheet System Analyzed
- More on Rings as Twings, Inhaulers, and Twings
- Calibrate a Marine Compass
- Low Friction Ring Mechanical Advantage
- Make your own Telltails
- GPX CSV Waypoint Editor and File Converter
- Buying New Sails
- Bluetooth GPS Receivers
- Almost Lost My Rig
- Rock Box Blue -- First Look
- Buying Used Sails
- Phone or Tablet On Board
- Starting Apps
- No Shackle Halyard
- Vang Systems
- Evantide Sails Again
- Easy GPS Waypoints and Routes Creation
- Gross Fine Mainblock Reeving
- Finding Target Boat Speed to Windward
- Bonding Sinks Boat
- Calibrating your Knot Meter
- Printing your own NOAA Charts
- Repowering your Sailboat
- Amsteel to StaSet Splice
- Jib Twing
- Bonding your boat
- Lightning on a Sailboat
- Humidity Below Deck
- Low cost High Tech Halyard
- Mainsheet Systems
- Rig Tuning
- Loos gauge accuracy
- Foot Block Wedge
- Replacing Cockpit Drains
- The San Francisco Bar
- Tuning the rigging
- Boat of the Month (L-36)
- Chariman Bob's list of concerns about L-36s
- From Odin Braathen
- Swiftsure (1959-1970)
- L-36 Class History
- Remembering Bill Lapworth
- Remembering Chairman Bob
- What is the handicap of an L-36?
- Inspecting Wood Boats
- Cockpit Repair
- Repairing cabin top leak on Papoose
- Repairing a pulled up rail track
- Wood Boom Repair
- Wood Screws
- Pilot Holes
- Machine screws
- Screw Heads
- Screw Length
- Hex Bolts
- Wrench Size
- Knots, Splices, and Rope Work
- Diamond Knot.
- Block Systems
- Loos PT Gauges
- Breaking Strength
- Knot Break Strength vs Rope Break Strength
- Line Selection guide
- Jibsheet Load Calculator
- Twine Size
- Fraction equivalent
- Table of Daylight Savings Time
- Find the Latitude and Longitude
- Marine Zone
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.