Welcome to L-36.com
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
Used Sails Listing SiteYou might see a new tab on L-36.com. The "Used Sails" tab represents a new service for the sailing community. 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. All presented in terms that relate to your boat. Just enter the brand of your boat, pick the specific boat from the list, and the type of sail you are interested in. The next page will list sails that might fit the boat you have selected. Calculations are made, such as %LP and percent of maximum as appropriate so you can see easily which sails might be of interest. Below is a sample listing
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
Using Bluetooth GPS Receivers with Android
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
How to Fly a SpinnakerThis 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.
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
- 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
- How to Fly a Spinnaker
- 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.