Seldn estimates the main reef clew force to MSL (maximum in service load)=5.5kN, the reef tack load to MSL=3.5kN (10 Newton=1 Kg f). Fly Soft-Attach Blocks. Planning. Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 Remove & replace the frozen reef line sheave at the aft cap end. Experiment if you want. Safe working load 1150 pounds. Show All. Single Line Reefing. Slide: Knots used to tie onto another line which can be moved along the line as needed. When well set up, single-line reefing systems, which have a low-friction pulley system within the boom can be extremely neat. I am using a "dogbone" through the tack cringle with one of the Antal low-friction eyes as a block. Rigging hardware including all the fittings and instructions for reefing your mainsail back to the cockpit. Single line reefs down tack and clew points. Details. Second pull down reefing tack to desired position. Sea Shadow - #808 Columbia, MD . The boom extrusions are relatively deep in relation to their width, allowing a lighter extrusion with high resistance to vertical bending. YKK #5 Black Single Non-Locking Long Metal Zipper Pull (Coil Chain) #104359 YKK #4.5 Black Single Non-Locking Metal Zipper Pull (Coil) #104361 YKK #10 White Single Non-Locking Metal Zipper Pull (VISLON) #103188 Experiment if you want. Remove & replace the small worn front reefing line sheaves. Position the block so the line pulls down and forward at 45 when reefed. Carbo Racing Foil. 4 x 5mm counter sunk machine screws, penny washers (or backing pad) are not provided as deck thickness may vary : 2. This will be true for all three of your reef points. All other control lines aft When reef two has already been hardened down, the harken block provides the fixing point at the boom for reef three saving a journey to the mast. Grip: Slides which incorporate a loop for a grip. On one boat I did sails for that had single line reefing, we used blocks at the reefing rings to lower the friction enormously. 10.24 8.00. Been using a single line reef for the last 10 years on my E27. I mount a light block (Harken Carbo Airblock is my favorite) at the tack to reduce friction, and make sure the tack is set first. Re: Gaff/gunter rig main reefing systems. -4%. Siezed sheaves in Selden boom single line reefing kit on 36i. Unless this eventually leads to damage of the tack block (something I'll have to keep an eye on), it seems to distribute the tension of tack and clew much as I would do if I had separate lines. Wichard Inc handles the marketing and distribution for North America for Wichard and Profurl, well known brands in The system makes reefing your mainsail a quick and easy operation. Tweet. These simple yet strong blocks are low weight and operate well under a wide range of load conditions. The main is small enough to get away with it. I would like to discuss the single line reefing system as a separate subject. I am looking at blocks which have a safe working load of 1540 lbs and a breaking load of 3080 lbs. The Corsair 37 features a shallow draft with retractable daggerboard and rudder for shallow water exploration. These are a 2" block and can handle 1/4" to 1/2 " lines, our reefing lines are 3/8". Single Line Reefing. One attached to the reef tack and then to a car inside the boom and the other attached to the reef clew and run through the car, the boom and back to the cockpit. 27 Jun 2015 7:19AM. Knives & Line Cutters; Multitools; Rigging Knife Kits; Rope Splicing Kits; Marine Fastenings Copper Nails & Roves Barton Plain Block Single Swivel & Becket (Without Shackle) Size 0. The only change I made was to put a block at the luff for the first reef. Tas Lifting - Lifting Sales & Servicing. There is no information that I could find on seized sheaves. Slab reefing mainsail with lazy stack pack and Facnor furlers for genoa and staysail 2018. (See illustration below.) A system of guided blocks inside the boom ensures that the lines do not tangle. (Replace both sheaves as they are of similar original vintage) 2. Ring is 32mm (1 1/4") OD x 16mm (5/8") ID, plate is 65mm (5/8") high x 40mm (1 5/8") wide and is 3. Acts as fairlead for reef line and stop for sail when reefed with AutoReef (single line) reefing system. Can reef anytime. modern rigs sometimes use a single line "jiffy reefing" system with cheek blocks to tame the tack and clew at the same time (in theory). Single Line Reefing. This smart solution can be mounted with standard tools and allows running the reef line to the cockpit. Made the whole system work like a charm. These are a 2" block and can handle 1/4" to 1/2 " lines, our reefing lines are 3/8". This project we are calling shuttle cars be gone because inside the Island Packet boom there are two shuttle car blocks with pulleys. Includes wire rope; single leg wire assemblies; wire strands; control pulleys; turnbuckle lock clips and other wire rope attachments and terminations. The blocks hang off the loops passing around the boom. Blue Magic has single line reefing and big electric winches to control a big mainsail. In general the consensus seems to be that single line reefing results in too much string in the cockpit and/or the boom is too short for this to work so the install will involve two separate reefing pennants. Small Boat Classic. Flattened SS ring is welded to diamond shaped SS plate. 1. All, Catalina (or maybe the delivering dealer) has rigged the single line reefing a number of different ways over the years. Fully zippered sleeve luff sail combined with a halyard for hoisting and an open reef section allows for single line reefing on the water in seconds for sailing in rough conditions. I drop the halyard to just beyond the reef marked on it with Sharpie, crank down on the single-line, and re-tension the halyard to the reef mark. Step 3 Installing Tack Block General Instructions Detailed Instructions A. Add to Cart Add to Wish List Add to Compare. Adding some tension to the D1s, D2s, D3s and enjoying the best fall day so far in #2021 #rigging #annapolis @passport_yachts #54footer #fall #sailboats and finally check out this #badass #custombosunschair made by our friends @yacht_canvas using #dyneemawebbing A Few Reefing Tips. Needless to say, the blocks in either of these systems need to be the low-friction, ball bearing type. Wire High-Strength. when reefing down, it is a big issue when shaking out a reef. So I have a single line running through both tack and clew. Posted by At the moment my system incorporates four movements if you dis-regard vang and topping lift. Mast Folded: Pros: Line routed through upper mast hinge block allows line to fold out and over, away from the hinge, with a straight drop down to the tack reef cringle. Seasure Inside Boom Single Line Reefing Block. Fly Soft-Attach Blocks. First the halyard is lowered to a pre-marked position, then the reefing line wound in. Lower the sail to a pre-determined mark on the halyard, tension the reefing line and trim the sail all from the cockpit. Figure 1 below shows a typical single line reefing system for the first reef in a main. Single Line Reefing: This method works very much like two line reefing, except that one line is run through both reef points (Figure 5) and then only that line is tightened to secure the reef. Systems B and C are very similar, they use a moving block attachment inside the boom and can only be used for reefs which are not higher than the boom is long. Small Boat Underdeck. You want the luff to be pulled straight down, maybe slightly favored forward since the reefing line and block won't be as fixed as the reef hook, but you don't want a wrinkle at the luff from going too far forward. Bight: A slack part or bend in a rope. Right is the line that goes down to a block at the vang, then up through the auto reefing fairlead, then up to the appropriate reefing cringle. Standing Rigging - 2013. Great for short handed sailing. Look at the lines at the top of this picture. The booms can be fitted for traditional slab reefing or Single Line Reef, or be used for furling masts. Cut the blocks off the main sail luff and installed two line reefing (see Harken) ; just like Jeff says its way better.It could be that different boats behave differently, don't know, but in my case of a fractional rig and dominant main the KEWL. Sheave Size 30mm x 11mm. Consider getting rid of the blocks (reef and 2 outhaul) inside the boom while at it. Premiumropes: expert in ropes and steelwire rigging, sailing hardware - large stock, expert advice and craftmanship. 2. Model Year: 2004 . Types: Single, Double, Boom Reefing Blocks, Bolt Down. Lines lead from front sail eyelets, forward slightly, to deadeyes on mast to ensure correct tension on foot and luff at tack. Blocks on single line reefing have nothing to do with the design concept on one line doing both. Once the tack block is touching the horn, any additional tension on on the single reefing line can only pull the clew in tighter. Barton Yachts Pulley Blocks Size 1, Rope up to 8mm. Simplifies the rigging and also will allow future line replacement to be done without having to drill out the end caps again.-- Jyri J. Virkki - Santa Cruz, CA-- There is a Harken double block that looks like it may be a suitable replacement, and Rig-Rite sells the original. Once the tack block is touching the horn, any additional tension on on the single reefing line can only pull the clew in tighter. INSTALLATION. Flip-Flop Small Boat. DESCRIPTION. The use of carbon fibre needle roller bearings means that they run well even under high loads whilst freewheeling under light loads for fast line take-up. Just wondering if those would be strong enough for the single line reefing lines at the sail? We are considering either Single Line reefing within the boom fitted with a shuttle block or fitting the Easy Reef system to the mast. Perform modifications at your own risk; Ref: S409-60. 32.34. Changing the reef line blocks 1. (H) Block for tack and clew reefing lines to take them aft. I don't find much difference, because all you have to do is to chuck the cunningham eye into the #1 reefing eye before you dump the #2 tack line. Part #9605. 27 ft. Published date: August 7, 2004 Boat Type: Boat Type; here are my lines led aft: single line reefing. 0 Reviews. Barton Spare slider for Slab reefing kit for craft up to 8.5m. The blocks are now gone and patches are now where there once were blocks. Lines lead from front sail eyelets, forward slightly, to deadeyes on mast to ensure correct tension on foot and luff at tack. The second concerns sail shape. Single line system (per reef 2 reefs shown). Snap shackles. Sheave Size 30mm x 11mm. Small Boat Underdeck. Shaking out from a number 2 to 1 is quicker and easier when the #1 is already set. Reflex Furling. And a few tips that work for us as you put in a reef: Lower the main progressively, simultaneously taking in the slack in the other reefs as you go. 29-XX range (42mm diameter sheaves) FREE FREIGHT - Topargee H2F-FM Digital Water Tank Gauge 12V - Flush Mount - Displays Litres Left in Your Water Tank - Nothing Fitted to Your Tank - In Line Flow Meter (H2F-FM) Online Price: $115.00 $140.00 (Including 10% GST Tax) FREE FREIGHT Topargee H2F Digital Water Tank Gauge - New Larger Display with Backlighting and Auto Off - Recess Mount.. Also stops the line chafe that often occurs. We sail a Beneteau 321 which has standard reefing for the main sail. It is certainly possible however you will need to consider how to run the reefing lines. It would make more sense, although it would require considerably longer reefing lines. Perhaps bluewater sailors should consider fitting the cockpit-controlled, single-line reefing system to reefs 2 and 3 and keep the first reef as manual. Answer: We really dont like single line reefing systems because of the level of complication and the amount of friction that all the blocks add. Remove the after-market Harken single line reefing system mounted on the outside of the boom. Pull out the forward reefing lines aft Micro. Through-Deck. Given that, the procedure is: 1- Ease the main so it is completely luffing. 150 ft. The forward cabin has a centre line double berth with custom mattress and wooden slated base for good ventilation and hanging lockers and shelves on either side. Marine Store | All Products | Dinghy Fittings | Dinghy Blocks | Seasure Single Line Reefing Block 09-60 28mm. Single braided line made from super fibres such as Dyneema or Stirotex - use when both ends are free Rope: DX Core , DX Core 99 , S Core , P Core Double braid rope made from super fibres such as Dyneema or Stirotex - simple method Small Boat Classic. Two line slab reefing. Brierley Marine - Chandlery. For a three part (three line segments) outhaul, youll need: Harken 083 single block with a becket or equivalent; Ronstan small V-Cleat Fairlead or equivalent; 4 x 1/4 New England Ropes Sta Set or equivalent. England. Eye bolts; Eye nuts; Go back. I agree that reefing was marginally more smooth but not worth the wear and tear on the sail. MKIV Jib Reefing & Furling. Single line system (per reef 2 reefs shown). Protexit Exit Blocks. Question: Would you contemplate a single-line reefing system on a 667sqft sail? This is OK until Mother nature gets angry and you have to deal with what she hands out to you out there. Carbo Air Blocks. The system makes reefing your mainsail a quick and easy operation. Posts: 998. Show All. Maximum Mainsail Area. View all Dinghy Blocks. Part #10193. Jeanneau Guru. Lazy Jacks. Contents of your Single Line Reefing Kit : 1 x Reefing slide on 25mm 'T' track with end fittings (No.1) 2 x Eye Straps (No.2) 1 x Tang Block (No.3) 1 x Bullseye (No.4) 1 x Mast Base block (No.5) Rivets and machine screws. The friction is essentially gone. 4. Allan S. Field . The final configuration from Summer Snow differs from this configuration in a couple of way that may seem picky at first blush, but are actually important changes to reduce stress on the mast,sail, boom and lines. I finally decided to take a serious look at it and discovered that the Selden system actually has two lines. To cut the friction, I lashed blocks to the sail reef points. Ease reefing the mains'l on your Catalina 25. We are considering either Single Line reefing within the boom fitted with a shuttle block or fitting the Easy Reef system to the mast. World leader in manufacturing safety related products for outdoor sports and industrial applications Wichard Inc is the North American subsidiary of the French owned Wichard Group. Left is the line that goes back to the cockpit. Unless this eventually leads to damage of the tack block (something I'll have to keep an eye on), it seems to distribute the tension of tack and clew much as I would do if I had separate lines. 30.95. The Z spar system uses floating back to back blocks. The Kiit comprises: 1 x Reefing slide on 25mm T track with end fittings (No.1) 2 x Eye Straps (No.2) 1 x Tang Block (No.3) 1 x Bullseye (No.4) Single-line reefing is a variation on the slab reef in that the clew and tack are pulled in with a single line. Then secure three cheek blocks on the starboard side of the boom. Saw this on a Beneteau 323. Single line reefing is only possible for 2 reefs with the third a standard reef. System A uses two blocks in the sail and can be used for reefs higher than the boom is long. Share. Illustrated system is based on Series 40 All Purpose blocks, is suitable for mid range keel boats to 10m (33ft). Don't have to reef early and have never had to winch. Single Line Reefing. Location. The complete system is supplied as a ready-to-mount unit. Barton (pulley) Blocks Size 1, Rope up to 8mm. Protexit Exit Blocks. Apr 17, 2013 10:02:18 GMT. Maximum Boat Length. the end cap (and later re-rivet) to get at the blocks inside. I personally prefer single-line for speed and convenience. When the reef tack is down, attach the shackle or put the ring on the bullhorn. Seasure Single Line Reefing Block 09-60 28mm. Single line reefing kits let you shorten the mainsail in three easy steps: ease the halyard to a predetermined mark, tension the reef line, and trim the sail. Reefing eye straps; Go back. Harken Vang-Master. When the reef is close to its correct position pull the halyard through the clutch until the reef mark is visible on the winch side. it's a lot of line and can add a lot of friction especially when raising sail, and particularly when lines are run through hollow booms. 4. The kit includes an aluminium track, a traveller, blocks, fairleads, shackles and screws. Small Boat Furling. Secure a stainless steel eye-strap to the port side of the boom near the clew of the mainsail. Dynema running rigging throughout. Position the reefing tack block so its aft of All you do is ease off the halyard to premarked reefing points and then haul in on the reefing line. Mainsail Reefing Systems - Dual and Single Line Jiffy Reefing. Tools : Pencil Pliers That said, you can also try going with a ring on the leech with little gain in friction. First release main halyard tension. The only additional equipment needed, apart from the rope, is two balance Sailspar I think would be able to quote for a black anodized boom, I think they also use the Z Spar boom sections. We sail a Beneteau 321 which has standard reefing for the main sail. fearmhuir said: I have Selden single line reefing. Often used in climbing. The block is attached to the reef cringle by wrapping webbing to the block and running it through the reef cringe to a ring on the other side of the sail. Single Line Reef is made practical and reliable by Seldn. To reef, take an alpine butterfly in the reefing line towards the tack, haul tack down snug, take a bight in the part of the line towards the clew, pass bight through alpine butterfly, haul snug and secure with a few half hitches. Agree with Jeff. Although we use this block primarily for reefing, it may be used anywhere a sturdy Delrin ball bearing cheek block is required. 2001-2022 Sailrite.com Sailrite Enterprises Inc. 2390 E. 100 S. Columbia City, IN 46725, USA The leech reefing line pulls down, as well as aft to tension the foot. If you are going to add single line reefing for both the 1st and 2nd reefs, you'll need the double stacked block pictured below for the forward reef block instead of a single forward. that line is the "single" line you pull to put in the reef. The kit includes all required hardware, blocks, line, and mounting screws for your first set of reef points. Product details. The line then goes back to a block at the bottom of the mast and off to the cockpit. My biggest problem is that one cannot establish luff tension, thereby reducing the load on the luff sliders, before placing a load on the reef clew line. To reef, you start with the boat sailing on a point that allows you can dump all the wind from the main by easing the sheet. 3. rene460. Remove the outboard boom end-fittning (Phillips or Torx screws). Hi all, I'm interested in peoples opinion of various single line reefing systems. Flip-Flop Small Boat. You want the luff to be pulled straight down, maybe slightly favored forward since the reefing line and block won't be as fixed as the reef hook, but you don't want a wrinkle at the luff from going too far forward. GP Catamaran Ceramic Mainsheet Systems. Just wondering if those would be strong enough for the single line reefing lines at the sail? Just lower the sail to a pre-determined mark on the halyard, tension the reefing line and trim the sail all from the cockpit. Barton Yachts Pulley Blocks Size 1, Rope up to 8mm. The leech reefing line pulls down, as well as aft to tension the foot. REEFING. The Pfeiffer Marine reefing system is suitable for boats up to 34 feet. Single deadeyes (or bull's eyes) are used to guide and control a line and, particularly in older vessels, to change its direction. Single line reefing system for sailing yachts up to 30 foot. Basically it's using two lines that can each double as a cunningham or a reefing line. Single Line Reefing kits let you shorten the mainsail in three easy steps; ease the halyard to a predetermined mark, tension the reef line, and trim the sail. Lazy Jacks contain mainsails while reefing and dousing. This had the effect of putting more tension on the luff simply because of the additional friction at the leech. It is now working twice as hard, pulling down the outboard and the inboard portions of the sail, and even with large blocks to aid the line, it still meets a lot of resistance. (See illustration below.) While it works quite well when it is needed, i.e. If youre concerned about an over-crowded boom, Seldn suggests upgrading to a new internal single line-reefing boom. Single loop blocks - Plain bearings; Single loop blocks - Ball Bearings; Single loop blocks - High load bearings Offshore Rescue - Safety knife Line cutter. 690. The second concerns sail shape. The reefing line from reef three at the luff of the mainsail passes down to a small harken block with a fixed becket which is fixed to the reefing cringle for reef two. Contents of your Single Line Reefing Kit; Tools Required for fitting; Positioning the Reefing Slide on The Track (No 1) Mounting Track Through-Deck. Note the blocks at the tack and clew reefing cringles to reduce friction and that the lead from the boom to the clew is well forward on the boom. Wire High-Strength. Single Line Reefing shortens the mainsail in three easy steps: ease the halyard to a predetermined mark, tension the reefing line, and retrim the sail. The reef lines run from the tack down through a fair lead on either side of the boom, then down to the offending block, where they are run back up to the boom and aft through the boom to their corresponding clew rigging (I assume to blocks within the boom) from which they are run back to the forward boom sheave and down to a swivel block at the mast step, It boats an intelligently designed deck layout with halyards, topping lift, reefing and outhaul controlled at the mast. The boom extrusions are relatively deep in relation to their width, allowing a lighter extrusion with high resistance to vertical bending. Bought my boat with a single line reefing setup and often needed to venture to the mast to untangle the reefing line. In my view this is by far the best system, especially when shorthanded. All you need to add is a rope for the reefing; you can view the full Kingfisher Ropes collection here. REEFING. The reef cleat can be mounted on the mast or the line may be led aft to the cockpit with the addition of the related items listed below. 2- With one turn of the main halyard around the winch, raise lever on the rope clutch securing the halyard. SO30i 2009. One thing when changing the boom is to check the gooseneck will work, this can be another extra cost! SJ23 Tech Tip F05, (Updated 2019-07-28) B. Schimmel. I ended up switching to a more standard single line reefing: Going to that meant putting the two cheek blocks external on my boom. Single Line Reefing - I am looking to fit single line reefing (first reef position only), as i do a lot of single handed sailing - does any one have a Choose the same side as the track is mounted to the boom. Brierley Hose & Handling - Hose Supplies. For the 3 luff reefing points I used Barton swivel eye ball bearing size 4 pulleys, as the pulleys wheels are covered on both sides. Harken Vang-Master. More modern systems would use a block for this purpose but in traditional rigs with many lines to deal with, designed when blocks were relatively expensive to make, a deadeye provided an acceptable compromise. Is there a block that can be sewn onto the sail to take the place of the rings? (** Barton 4/5 single block, ball bearing sheave, reverse shackle with becket) As friction is a problem on single line reefing systems, I have added blocks at all turning points. Rehoist the halyard for proper tension. Friction is the enemy on any mainsail reefing system and if you want the most efficient single-line reefing system youll have to put your hand in your pocket and spend money on high-load blocks and sheaves with bearings. If youre concerned about an over-crowded boom, Seldn suggests upgrading to a new internal single line-reefing boom. Undo, or cut off, the knots holding the shackles on the forward reefing lines. Compounding the friction is the diameter of the line related to the blocks. The cordage makers recommended ratio between the line diameter and the sheave diameter is 8:1. A. Description. Carbo Racing Foil. MKIV Jib Reefing & Furling. Useful information. Price From. lines led aft / single line reefing . Reflex Furling. Hunter 36 Sails with reef points do not need modifying. Has anybody had experience of the Easy Mount the reefing tack block to the mast on the same side as the track is mounted to the boom. Designed for in boom reefing systems, featuring soft rubber type bodies to prevent damage and reduce noise within the boom. Types: Single, Double, Boom Reefing Blocks, Bolt Down. Index. Barton (pulley) Blocks Size 1, Rope up to 8mm. Price From. GP Catamaran Ceramic Mainsheet Systems. Most sailors will stay in protected water during lousy weather claiming they don't have decent reefing on the mainsail. I am looking at blocks which have a safe working load of 1540 lbs and a breaking load of 3080 lbs. Free shipping to more than 20 countries. Single line reefs down tack and clew points. Pros: Reefed Sail: Line from Tack Reef Cringle routing down to the lower mast hinge block allows a steeper angle when reefing which will help keep the luff tighter. Has anybody had experience of the Easy There is no need to struggle while "planting the flag" as with other dinghies and you can easily drop the sail while on shore without dropping the mast. Using good blocks on the luff and leach reef points instead of the cringles or even low friction rings helps tremendously with single line reefing friction. 0%. Micro. The best solution would be a dismantle, service and reassemble, but this would be a big job. If I got it right the purpose of those systems is to first pull in the tack and then the clew. The luff and the leech are reefed at the same time. triple spin lock block main halyard led aft mast base / blocks note sheet holders Published by: MMMike. Splice on messenger lines. One near the clew corner; one four or five inches aft of the gooseneck; and the third near the gooseneck. Illustrated system is based on Series 40 All Purpose blocks, is suitable for mid range keel boats to 10m (33ft). When blocks came into common use Small Boat Furling. Stoppers: Knots tied at the end of a line to prevent the line from running through devices such as cleats or pulleys. Sails with reef points do not need modifying. Wichinox: stainless steel hardware maintenance. These shuttle cars are there to provide a purchasing power to the reefing system. Snap hooks. Seldn estimates the main reef clew force to MSL (maximum in service load)=5.5kN, the reef tack load to MSL=3.5kN (10 Newton=1 Kg f).