Additional grommets punched in sail head (yard edge)
New boom and yard fabricated;
1 1/2" PVC schedule 40 pipe with 1" x 1 1/2" cedar insert set in epoxy.
|1 1/2" cedar insert ripped from cedar deck board , edges eased.|
|Clear PVC cleaner/primer and glue, end caps and union.|
|Pipe sections glued, extra length at one end for epoxy pour.|
|Cedar insert to end of pipe at other end.|
|End cap glued in place.|
Flexural Modulus, psi @ 73°F 360,000 ASTM D790
Western Red Cedar #2 @ 19% moisture content
Modulus of elasticity psi 800,000
Coal Tar Epoxy
Tensile Strength ASTM D638 3,600 psi
Elongation at break ASTM D638 28%
Flexural Strength ASTM D790 4,000 psi
|Next sail, also full batten balanced lug|
|Ulla Gaff Rig with headsail on Bowsprit.|
I will conclude my balanced lug experiment this year and begin work on a gaff sail in 2016
|Chain Bobstay installed (plastic coated chain from an anchor) April 19. Underload the mast rakes back about 1.5 deg pulling the bobstay into tension. The bobstay will also act as a cushion for the too often occasions when I hit the dock.|
Friday April 17: Mast pivot drilled to 5/8" for copper pipe bushing (1/2" bolt fits in 5/8" OD pipe)
Surface prepared for bowsprit.
|Preliminary batten layout.|
Removed winch from former mast and will mount on cabin top near companionway for yard halyard. I will also need longer halyard, I currently haul and secure at base of mast.
|Halyard Winch cleaned, simple double ratchet operation.|
|Halyard winch assembled|
Come back later for a cleaned up page.Parrels added to battens.
Single line lazy jack moved to mid-boom
Topping lift to be added to boom end to block at mast base then to cockpit cleat.
50mm triple block for yard halyard added to mast top (was 40mm double block)
50mm double block for yard halyard added to yard (was 40mm single block)
Mainsheet moved to former backstay pushpit ring, double-double block.
Boom cockpit clearance adjusted for bimini and bimini installed
PVC wear pad on steel tabernacle to minimize wear on boom, to be secured better.
Tack vang tensioned to slope boom about 5 deg;
Initial design was junk rig with unstayed or stayed mast, but evolved through full battened Balanced Lug to Balanced Lug without battens then with full battens. The lug/junk sail is just a frugal wing sail, old is new again.
|Full batten balanced lug sail installed.|
Need to add topping lift and lazy jacks.
|Yard and boom lateral stiffener added, battens added.|
Using GoPro so some fish eye lense distortion.
|Battens ripped from cedar deck boards,one coat spar varnish|
|Next iteration will be bowsprit with jib on Alado roller furler and full batten balanced lug.|
|Balanced lug rig. Still some adjusting to lazy jacks and reefing, but ready for summer.|
|Steel tabernacle/compression post|
No more contemplating and procrastinating under the excuse of planing, it this now a must do before the spring.
The boat will be in Margate NJ for at least 2 months in summer 2014. As is the Bermuda rig at approximately 28'0" will fit under the Ocean City NJ bridge 35'0" clearance, but not the Longport NJ bridge at approximately 25'0" (20'0" during repair work due to be completed before the end of 2013).
Longport inlet which also serves Ocean City has an entrance channel depth at low tide of 16'0" but to get to Margate with Bermuda rig I must go under the Ocean City bridge to a narrow channel through the salt marsh almost to the mainland then down another narrow channel through salt marsh to Margate, about 8 nm.
With the balance lug as designed I will have 20'0" with 1st reef or 23'0" without reef, enough for the Longport bridge which will make Margate only 2 nm from the inlet.
The mast dutch tabernacle will also open up more options on the NJ Intercoastal Waterway and DelMarVa back-bays.
So haul-out this winter will include the rig change and interior upgrades for more comfort.
A Junk sail may be a future iteration?
|Dutch Tabernacle compression post|
|Mast tabernacle hatch infill rough with steel scrap from tabernacle.|
|Hatch infill/mast partner rough fit.|
April 11, 2014 mast removed,
winched down using halyard from top of old mast to top of
|KISS option with simple unstayed tabernacle|
and simple sail without battens.
Checked with my lumber supplier for quote and delivery. The mast 16ft above deck will be western red ceder for better dimensional stability, with boiled linseed oil finish.
February 2014 mast ordered.
The mast will sit in an 8ft, 4x4x3/8 steel tube tabernacle/compression post, secured at fore peak step bulkhead and hatch solid infill.
Back to work on this June 2013, two weeks of thunderstorms has cut into sailing time.
Tabernacle post was 3/8" steel square tube salvaged from a building I was working on, the contractor did the initial cutting and drilling holes. This week to lighten the tube I removed steel below the forward pivot and ground edges. More grinding and descaling then a bare metal primer.
The mast will swing within the 4x4 steel tube on a 1/2" galvanized steel bolt, and be secured laterally by tube side walls and fore/aft with high and low 1/2" galvanized steel bolts.
July 3, 2013
Grinding, cutting, sanding and wire brush rust and scale complete. Coal Tar Epoxy surface priming on the first almost dry day for three weeks.
4x4x3/8 steel tube
weight 8 x 18.84 lbs x 0.75 = 113.04 lbs
(1/4 of material removed in fabrication)
The tabernacle/compression post provides for ease of lowering the mast.
Other options that were explored; deck stepped tabernacle with stays. full bury fixed mast with and without stays.
A number of sail options were explored; fabrics, DIY, sail maker and non-traditional sources.
-Dacron with battens, a superior product would be a budget killer, not completely ruled out.
-DIY Tarp, the lowest cost option, maybe good for testing sail shape and patterns but a short in service life.
-Custom tarp, lower cost and probably superior craftsmanship than DIY but short service life.
-UV treated cotton/canvas "tarp" sail without battens, custom or DIY lower cost than Dacron, long service life, but heavier.
-UV treated synthetic "marine awning" material custom made with reinforced edges and reinforced grommets, higher cost than tarp options, but less than half the cost of Dacron, with a service life equal to or greater than Dacron. The main disadvantage over Dacron will be a potential for stretch and shape deformation.
February 2014 sail ordered.
|Simple sail without battens,|
170 sf = 19 yds @ 9 oz/yd = 170 oz = 11 lbs.
KISS sail 11 lbs (5 kg) original sail approx 10 lbs
Unstayed mast 46 lbs (21 kg) original 24ft aluminum mast approx 75 lbs
Yard 10 lbs (5 kg)
Boom 15 lbs (7 kg) original 10ft aluminum boom approx 25 lbs
Steel tabernacle 113 lbs (51 kg)
Total prelim 195 lbs (89 kg) Total original approx 110 lbs (50kg)
(assuming standing and running rigging no weight change)
Additional weight 85 lbs but lower including 56 lbs below deck
|Spinnaker for downwind running/reach|
|Jib blade on spinnaker halyard for close hauled|
|Boom, sheet end|
|Full Batten Balanced Lug Rig with unstayed tabernacle mast|
|Sail plan stayed mast with Dutch tabernacle|
Full batten lug (Junk) sail 190 sf.
|Original Bermuda Rig|
Main 111sqft (10sq meter) + Jib 74.4 sq ft (6.7 sq meter)=185 sq ft (16.7 sq meter)