Showing posts with label Sails and Rigging. Show all posts
Showing posts with label Sails and Rigging. Show all posts

Tuesday, February 10, 2015

When the #1 Genoa is up, we have been annoyed by having to steer off course, take a look for traffic and then return to our course. This picture shows how the view ahead is partially blocked by the sail.

We have had the #1 Genoa re-cut to raise the clew 3 feet. The local Doyle Sails shop did this for a very reasonable cost. We had the clew raised to improve our forward visibility while sailing close hauled.  The lower section of the sail that was removed should not have a large effect on performance because that section was partially distorted by the life lines and was mostly, fluttering in the breeze.



We will provide an up date after we fly the sail in the spring.








As promised, here is the up date:

We did have some good weather to check out the #1 Genoa with lower panel re-cut to raise the clew about three feet. As you can see in the new, eye level, photo, visibility forward has been greatly improved. we did not notice any large degradation in performance from the approximately 8% reduction on sail area. The noticeable improvement in sail shape may have compensated.







Friday, October 20, 2006

Standing Rigging (Oct 2006)

All standing rigging was replaced by a local rigger (Mike's Marine). This included: forestay, backstay, upper and lower shrouds. All turnbuckles were also re-chrome plated by a local shop.


Friday, November 18, 2005


Mast Support for Winter Storage (Nov 2005)

We did not neglect to make improvements in the winter storage systems. This support, for the aft end of the mast, is light weight, easy to install and does not take up any space in the cockpit. See left hand photo, below. It does not require the use of any tool for installation or removal. The attachments to the stern rail consist of four hand rail clamps. The right hand photo is a close up of one of the clamps.


















These are called SeaStow rail clamps and are available from Amazon and Defender. There are four clamps. Two on the upper rail beam. Two on the lower beam. The upper rail attachment beam is attached to the support with bolts, washers and wing nuts. There is play in the bolt holes to accommodate misalignment. The bolt end threads are distorted to prevent the wing nuts from being removed.

Lesson Learned

We always attempt to design things so that there are no loose parts involved and do not require the use of tools for assembly or removal. This item is a good example of that philosophy. Pieces and tools all have a habit of allying in the water!


Wednesday, April 22, 1998

Lazy Jack System (April 1998)

We first bought a Schaefer lazy jack system which has many component parts and requires attachments on the mast and boom. A schematic of the system is on the left, below. The right sketch shows the special pull back hook that is used to stow the lines inside of the sail cover.





















  1. Port and starboard, braided lines are attached to pad eyes about two thirds of the way up the mast.  These have elk hide, leather sheathed blocks at the lower end. 
  2. This system uses a single, 1/4 inch diameter control line, about 60 feet in length. One end of the control line is spliced to a small pad eye that is attached to the forward quarter of the boom on the starboard side. This line is fed through the upper starboard block, then back to a pad eye near the rear of the boom, then around under the boom to another pad eye on the port side. The line continues up and through the port block the down through a the eye of a cleat mounted on the port side of the boom. 
When hoisting or dropping the main sail, the control line is cleated so that there is tension in the lines and the sail is controlled within the lazy jacks. When sailing, the control line is set so that the lines are loose and do not interfere with the shape of the sail. 
When its time to install the sail cover, the control line is released and all the standing parts are led back to and through the two-sided hook on the end of the boom. The free end of the control line is adjusted to tension the lines and then cleated.
This all sounds easy and handy in theory. However, there are many friction points in the system. Because of all this friction, usage and stowage of the lazy jacks became a two person operation.
Four months after installation (August 1998), we abandoned parts of the system and substituted four lengths of bungee cord for the lower parts between the upper blocks and the boom. We maintained two sections of line, about eight feet long, that runs through the upper blocks, the fore and aft bungee cords are attached to this bridle line. The lower ends of the bungee spliced through the eyes of carabiners for attachment to the pad eyes on the boom.
There are three positions for the four bungee cords:




Stowed: The carabiners are attached to the eye of a short length of one quarter inch line that is attached to the end of the boom. The eye is tied so that it encircles the topping lift. The bungees are stretched somewhat to control their motion and being constrained by the topping lift, their motion is limited. They are out from under the sail cover and no sail cover alterations were required.






Hoisting and Sailing  The four carabiners are moved to pad eyes that are located forward on each side of the boom, a few inches aft of the gooseneck. The bungees are still tensioned, somewhat, so that their behavior is well controlled and they do not interfere with or affect the sail shape.











Sail Dropping: The four carabiners are moved to pad eyes that are located in the original positions on the boom. This “soft” lazy jack system then replicates the original. This operation is performed by first moving the two port carabiners and then the starboard ones. When the sail is to be dropped, we head upwind, release the halyard and the sail drops in neat folds to the top of the boom. The sails ties are attached and we are in control.





Each movement of the bungees is easily accomplished by one person, in a few seconds. In our opinion, this is one of the most convenient and quick lazy jack system extant.





Although they do not show themselves in the above pictures. There are small plastic balls attached to the upper bridle line near the block. These balls limit the travel and prevent the bungee sections from moving out of reach.




The bungees do last for quite some time. They were replaced, for the first time, in 2004. This new bungee cord has a black sheath which resists ultraviolet radiation. The upper bridle lines were replaced in 2007. The elk hide leather sheaths and bungee cords were replaced in 2014.

{Lessons learned:
1.Sometimes new equipment is too complicated and takes more effort to use than it saves.
2. With enough thought, a simple system will be found that performs better and uses less effort.



Saturday, April 18, 1992

Chutescoop (April 1992)

This hardware was purchased after we had a number of challenging take downs with our asymmetrical spinnaker. The Chutescoop was easy to install and fit well. With it installed, the spinnaker is hoisted while it is in the scoop.















The mast does not have a crane for a standard spinnaker halyard swivel block. So we installed a swivel block on the forward face of the mast, about 12 inches from the top of the mast. The halyard is lead through this block and the spinnaker head is hoisted to this block. This provides clearance for the spinnaker to pass aft of the forestay, when jibing. This block also functions prevent chafing of the halyard in the masthead sheave exit by limiting lateral movement of the halyard.


The sail tack is shackled to small block, sheaved for wire, that runs up the forestay. The height of this tack-block is controlled by a line that runs down to the deck, through a lower block, then back to a fair lead and jam cleat that is attached to the outside of the cockpit coaming. With this line, we have an easy means of adjusting the height of the tack.

Two sheets are tied to the spinnaker clew. They are lead, port and starboard, back to turning blocks at the aft corners if the cockpit. The active sheet is led forward, from the turning block to the active cockpit winch.
When all of the lines are set, the chutescoop control line is pulled which raises lower hoop of the chute. The chutescoop then compresses as it is raised to the top of the sail. The spinnaker opens, the lines are adjusted and we are on our way.
Jibing involves blanketing the sail with the main sail, easing the active sheet and pulling the spinnaker through the slot with the former lazy sheet. the main sail is sheeted during the process and eased after the boat has completed the jibe. The new active sheet is then adjusted and we are under way on the opposite tack.
For takedown, the spinnaker is, again, blanketed by the main, the sheet is eased and the control line for the lower hoop of the scoop is pulled. This pulls the chutescoop down around the spinnaker, forcing it into the Chutescoop. The halyard is the eased and the Chutescoop/spinnaker is collected on deck. The Chutescoop/spinnaker is picked up at the mid point and stuffed into the sail bag. The sheets, Chutescoop-control line and tack-control lines are then coiled and stored in the bag.

{Lessons learned: 
1.Learn from your mistakes. Spinnaker take downs require planning and careful execution.
2. Keep your eyes and mind open to new and better technologies when they appear.}