Through-Deck. The best solution would be a dismantle, service and reassemble, but this would be a big job. Bought my boat with a single line reefing setup and often needed to venture to the mast to untangle the reefing line. A system of guided blocks inside the boom ensures that the lines do not tangle. Undo, or cut off, the knots holding the shackles on the forward reefing lines. These two pictures are of Garry Hoyt's single-line reefing system. Planning. 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. 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. I agree that reefing was marginally more smooth but not worth the wear and tear on the sail. Perform modifications at your own risk; Show All. Just lower the sail to a pre-determined mark on the halyard, tension the reefing line and trim the sail all from the cockpit. When well set up, single-line reefing systems, which have a low-friction pulley system within the boom can be extremely neat. Second pull down reefing tack to desired position. There is a Harken double block that looks like it may be a suitable replacement, and Rig-Rite sells the original. I am using a "dogbone" through the tack cringle with one of the Antal low-friction eyes as a block. (H) Block for tack and clew reefing lines to take them aft. 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. I am looking at blocks which have a safe working load of 1540 lbs and a breaking load of 3080 lbs. The boom extrusions are relatively deep in relation to their width, allowing a lighter extrusion with high resistance to vertical bending. 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. A Few Reefing Tips. Barton (pulley) Blocks Size 1, Rope up to 8mm. 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. If I got it right the purpose of those systems is to first pull in the tack and then the clew. This project we are calling shuttle cars be gone because inside the Island Packet boom there are two shuttle car blocks with pulleys. 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 kit includes all required hardware, blocks, line, and mounting screws for your first set of reef points. Been using a single line reef for the last 10 years on my E27. when reefing down, it is a big issue when shaking out a reef. 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. Maximum Boat Length. Barton Yachts Pulley Blocks Size 1, Rope up to 8mm. 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. 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) A. 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. The Pfeiffer Marine reefing system is suitable for boats up to 34 feet. 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. Lazy Jacks. 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. Sailspar I think would be able to quote for a black anodized boom, I think they also use the Z Spar boom sections. 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). the end cap (and later re-rivet) to get at the blocks inside. Great for short handed sailing. 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). MKIV Jib Reefing & Furling. Index. Dynema running rigging throughout. Carbo Racing Foil. Lines lead from front sail eyelets, forward slightly, to deadeyes on mast to ensure correct tension on foot and luff at tack. Model Year: 2004 . I ended up switching to a more standard single line reefing: Going to that meant putting the two cheek blocks external on my boom. 1. When blocks came into common use 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. 2. I would like to discuss the single line reefing system as a separate subject. 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.. The booms can be fitted for traditional slab reefing or Single Line Reef, or be used for furling masts. Mainsail Reefing Systems - Dual and Single Line Jiffy Reefing. At the moment my system incorporates four movements if you dis-regard vang and topping lift. The system makes reefing your mainsail a quick and easy operation. The boom extrusions are relatively deep in relation to their width, allowing a lighter extrusion with high resistance to vertical bending. 690. Single loop blocks - Plain bearings; Single loop blocks - Ball Bearings; Single loop blocks - High load bearings Offshore Rescue - Safety knife Line cutter. Figure 1 below shows a typical single line reefing system for the first reef in a main. Often used in climbing. 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 that line is the "single" line you pull to put in the reef. 27 Jun 2015 7:19AM. 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 Then secure three cheek blocks on the starboard side of the boom. SO30i 2009. Location. Single Line Reefing. Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 Eye bolts; Eye nuts; Go back. Harken Vang-Master. Show All. All, Catalina (or maybe the delivering dealer) has rigged the single line reefing a number of different ways over the years. The blocks are now gone and patches are now where there once were blocks. Has anybody had experience of the Easy Tweet. Through-Deck. Snap shackles. 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. 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 Remove the after-market Harken single line reefing system mounted on the outside of the boom. Single line system (per reef 2 reefs shown). Just wondering if those would be strong enough for the single line reefing lines at the sail? 150 ft. The leech reefing line pulls down, as well as aft to tension the foot. Harken Vang-Master. Mount the reefing tack block to the mast on the same side as the track is mounted to the boom. Made the whole system work like a charm. Brierley Marine - Chandlery. 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 2001-2022 Sailrite.com Sailrite Enterprises Inc. 2390 E. 100 S. Columbia City, IN 46725, USA 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-- Left is the line that goes back to the cockpit. Illustrated system is based on Series 40 All Purpose blocks, is suitable for mid range keel boats to 10m (33ft). Sea Shadow - #808 Columbia, MD . The main is small enough to get away with it. GP Catamaran Ceramic Mainsheet Systems. England. Lazy Jacks contain mainsails while reefing and dousing. Third pull reefing clew into proper position. lines led aft / single line reefing . Marine Store | All Products | Dinghy Fittings | Dinghy Blocks | Seasure Single Line Reefing Block 09-60 28mm. rene460. Single line reefs down tack and clew points. So I have a single line running through both tack and clew. This will be true for all three of your reef points. 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 Experiment if you want. Reflex Furling. Designed for in boom reefing systems, featuring soft rubber type bodies to prevent damage and reduce noise within the boom. Published date: August 7, 2004 Boat Type: Boat Type; here are my lines led aft: single line reefing. Rehoist the halyard for proper tension. The only change I made was to put a block at the luff for the first reef. Once the tack block is touching the horn, any additional tension on on the single reefing line can only pull the clew in tighter. Choose the same side as the track is mounted to the boom. Details. To cut the friction, I lashed blocks to the sail reef points. 10.24 8.00. All you need to add is a rope for the reefing; you can view the full Kingfisher Ropes collection here. Re: Gaff/gunter rig main reefing systems. System A uses two blocks in the sail and can be used for reefs higher than the boom is long. 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. Look at the lines at the top of this picture. 3. Pull out the forward reefing lines aft Micro. The blocks hang off the loops passing around the boom. 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. Step 3 Installing Tack Block General Instructions Detailed Instructions A. Hunter 36 Part #10193. The second concerns sail shape. Two line slab reefing. 32.34. Contents of your Single Line Reefing Kit; Tools Required for fitting; Positioning the Reefing Slide on The Track (No 1) Mounting Track Shaking out from a number 2 to 1 is quicker and easier when the #1 is already set. 4. 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. 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. Small Boat Classic. We are considering either Single Line reefing within the boom fitted with a shuttle block or fitting the Easy Reef system to the mast. GP Catamaran Ceramic Mainsheet Systems. 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. All other control lines aft Small Boat Furling. Flattened SS ring is welded to diamond shaped SS plate. That said, you can also try going with a ring on the leech with little gain in friction. Carbo Air Blocks. Tools : Pencil Pliers 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. Fly Soft-Attach Blocks. Compounding the friction is the diameter of the line related to the blocks. View all Dinghy Blocks. Barton Yachts Pulley Blocks Size 1, Rope up to 8mm. Carbo Racing Foil. 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. 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. 3. This had the effect of putting more tension on the luff simply because of the additional friction at the leech. Micro. Reefing eye straps; Go back. Consider getting rid of the blocks (reef and 2 outhaul) inside the boom while at it. The Z spar system uses floating back to back blocks. 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. Ease reefing the mains'l on your Catalina 25.