Inmast furling mainsails are popular on many cruising boats, and the conveniences are hard to beat. The mast and boom form the supporting structure for most sails. Because these spars can be tuned to have up to 8 inches of prebend, making sure the furlers can rotate is critical. Theres an important distinction to be made between preventive maintenance and predictive maintenance. If you set it up your furling system right in the beginning it will provide years of uninterrupted use. Basically, the vertical shaft in the original line driver is replaced for a long.
If not handled properly while furling and unfurling, the sail. Quantums jeff thorpe and dave flynn get into the details about the available options. This, in turn, allows the load sharing and shape of the helix sail structure to fly unencumbered by the stiffness, weight, and diameter of a conventional cable. S spars routine maintenance for in mast furling system although your u. Facnor mainsail furler cruising anarchy sailing anarchy. The multitude of different systems requires detailed knowledge to achieve a perfect fit, and the unique way in which the sail is carried in the mast demands specialized shaping that is optimized to each extrusion type. May 27, 2016 in mast furling mainsails are popular on many cruising boats, and the conveniences are hard to beat. This mast section is larger than normally required and. Southern spars has a full time team of experienced designers, dedicated to designing booms of all varieties, with integrated rigcalc software at their fingertips. Try and unpack the mast and the boom before the transport leaves. The jib sail is clamped in place to the pvc tubing with hose clamps. Inmast furling mainsails are popular on many cruising boats, and the.
S spars routine maintenance for inmast furling system although your u. If you are going to install a system on a conventional boat, the boom furling has many advantages over the mast furling. After 4 years using the system in scottish waters i have. Rig pro mast maintenance programme southern spars pdf. This instruction manual has been compiled to give you information on the inmast reefing system. This mast section is larger than normally required and may require fewer spreaders due to the extra stiffness. After all of the conveniences that technology has afforded us sailors, there is still one luxury that has. S spars mainsail furling system needs minimum maintenance there is a need to implement a schedule of preventative service.
The mainsail was built with a wire luff, and until the wire parted, the system worked fine. Furling masts check the operation of the swivel sailing slouching check. I have a sparcraft furling mast as shown in the attached photograph. All bearings should be greased with grease part no. In mast furling although a very convenient furling system it does has its pitfalls. Whilst the mast is down, what maintenance canshould be done on the in mast furling gear. The jib sail is clamped in place to the pvc tubing with. Ive done a lot of sailing on a hunter 38 with in mast furling, and it took quite a bit of force to furl and unfurl the sail. Converting a manually operated furling mast to electric drive is quite easy. Roller furling booms are typically found on high end and larger boats and many use the leisure furl from forespar. The yard rigger and i pulled the forestay pin and walked the whole furling unit drum, foil with rod inside up to the mast where he lashed it to the mast at about gooseneck height.
Calculation of inertia minimum necessary for the proper maintenance of the. There was a particular part of the hood sea furl systems that made this viable. The mainsail because it furls like a jib cannot support battens, hence the mainsail needs to be cut with leach hollow like a jibgenoa. Ftmaintenance cmms provides a full range of features for documenting, managing, and tracking maintenance activities from a simple, allinone platform. Roller furling maintenance ocean navigator mayjune 2014. Roller furling booms are typically found on high end and larger boats and many use. As these systems tend to vary in construction and design, it is best to.
The maintenance of a furling mast is the same as for a standard mast, but some of the mechanical parts require a yearly verification. This instruction manual has been compiled to give you information on the furling mast reefing. The selden furling mast roller mechanism design is based on furlex foresail roller ree. Selden mast inmast furling mast is a mainsail reefing and furling system. In mast furling mainsails are a popular feature on new cruisers for convenience. Instalation of a main sail on a furling jeanneau 53 yacht mast by. There were a couple of older makes of furling not reefing head stays, one by hyde and another by stearns but they were not designed for using the headsail reefed. Maintenance free,it has an ownership lifetime guarantee. My previous hunter had z spar, and the selden engineering is way better. Furling masts check the operation of the swivel sailing slouching check the operation of the module sailing slouching grease the bearings change the furling line when it is worn.
In mast furling is a very popular method of main sail handling as its found on many of the major production boats. There is a point however, where the sheer size of the. Although similar to jib furling systems, in mast and boom mainsail furlers have some of their own unique problems. I have sailed many yachts with mail sail in mast furling systems, and i have never been so unsatisfied with these kind of sails as with all other types i sailed with. This is why vertical inmast furls currently are the. Behindthemast requires a gap which lowers the aerodynamical efficiency of the sail so much that the sail area has to be increased. Also if the halyard is too tight the sail will furl ok but will not unfurl without someone pulling the leech out of the mast by hand. In sailboat mast design, wood, aluminium and carbon fibre are the materials used, aluminium being the normal choice. What sort of maintenace the furling screw and the ball bearings at the bottom of the screw need besides flashing with fresh water and lubricating the ball bearings. Coordinated by paul stubbs, this team works closely together to design. The ins and outs of inmast furling mainsails modern sailing. It is the evolution of the wellknown patented rollgen system. It is characterized by higher performances in terms of loads and.
A clutch allows the motor to be disconnected for manual operation, if ever. Inmast furling mainsails are a popular feature on new cruisers for convenience. On a large sail this sort of system can introduce quite a lot of friction, especially if theres any wind in the sail, so an inmast furling system would probably have been easier to use. Preventive maintenance software gives you the ability to schedule maintenance, send alerts to. Like jib furlers the biggest enemy will be salt and corrosion.
Our more than 20,000 customers worldwide have relied on us to help. The standard sailboat mast section is elliptical, with an integral luff groove at its trailing edge. S spars routine maintenance for inmast furling system. Get the inside scoop on the the best options and for systems and sails. When greasing bearings and gears, do not overgrease.
Vertical battens can reduce leech curl and allow for a small increase. The crucial concept of compact f is the fixing of the housing sections to the mast sailtrack without the need to drill holes in the mast. The project specific design of a boom plays a vital role in the performance and usability of a yachts sail, spar and rigging package. Mar 05, 2007 whilst the mast is down, what maintenance canshould be done on the in mast furling gear. The sparcraft manual furling masts exclusively use wormdrive systems. Doyle sails proudly boasts a team of 15 designers based out of new zealand, australia, united states of america, italy and others.
The pockets are also builtin sources of chafe, and will require maintenance over time. Mast furling mainsail to function correctly, mast furling mainsails must work efficiently within the mast cavity and opening. Potential problem with selden in mast furling sailboat. Sailboat mast design, construction and maintenance inspection. New furling system for gennakers sails with freeflying luff. As these systems tend to vary in construction and design, it is best to follow manufacturers instructions for maintenance. The first stage of a study is the design calculation of inertia, breaking load of the rigging. At this time the halyard swivel and the endless screw will be checked. Manual for furling mast type rb mk iirc mk ii selden. The pvc tubing is then slid over the aluminum conduit which is in turn. In mast furling consists of a roller furler unit fitted inside a mast section that has a slot in the aft end for the mainsail to roll in and out of. Boats in this category are the trintella, morris, hylas, friendship etc. The helix luff cord allows for topdown furling at a fraction of the size, weight, and stiffness of past luff cables.
The unique design of the halyard swivel bearing distributes the load over the whole ballrace to give. Whatever your sailing program cruising, racing, off shore, the size of your boat, the profurl systems will. Coordinated by paul stubbs, this team works closely together to design, develop and remain consistent in the doyle sails approach globally. Back in 1978, dad and i build a wood mast with in mast furling on our 41 foot tri.
The boat we are hopefully about to purchase has a lot of cool stuff on it. Topdown furling is back the helix luff cord changes everything. It is characterized by higher performances in terms of loads and smoothness, and reduced weight by roughly 60%. Maintenance of the in mast furling mast periodic maintenance maintenance should be undertaken at least once a year. One thing new to me is a behind the mast furling system for the main. In mast furling mainsails are popular on many cruising boats, and the conveniences are hard to beat. How to step the mast with tubeontube furling system original. Sparcraft offers a complete range of furling masts, manual version or motor assisted electrical and hydraulic systems. There is a point however, where the sheer size of the mainsail makes a mast or boom furling system a preferred option, and in a future issue, we will take a fresh look at how mast and boomfurling systems. Track ros, inventory, labor hours, history, reminders, scheduling. Quantums jeff thorpe and dave flynn get into the details about the available options and what you need to know. Ftmaintenance is available as a software as a service saas subscription, cloudbased purchase, or onpremise solution. Feature rich, easy to use cmms software ftmaintenance cmms. This system is the only way to guarantee a perfect furling operation without jamming, and can be handle by one person twohand control.
Jeanneau sailboat, power boats, yachts, trimarans and bali catamarans. From the first sail of your boat you will need to start your routine maintenance schedule to keep your furling mast in top working order. Unlike other in mast furling systems, the cars hard clew. What sort of maintenace the furling screw and the ball bearings at the bottom of the screw need besides flashing. The furling tube needs to have proper tension to furl properly. The truth about inmast furling mainsails articles quantum sails. Selden furling mast allow for convenient setting and reefing of the mainsail. At the heart of this in mast furling system is a patented device that evenly distributes the loads on all the stainlesssteel bearings in the upper and lower furling units. The z spars link to in mast furling help describes some of the pitfalls and how to overcome them.
For the slightest damage take a photo and report it to the driver and your dealer. Maintenance software provides a smoother path to preventive maintenance and an end to maintenance chaos. Back in 1978, dad and i build a wood mast with inmast furling on our 41 foot tri. Too much fun blowing past those roachless boatabagos and as tempting as a furling boom is it just looks like lots more maintenance. Sparcraft in mast furling screw maintenance ybw forum. Theres no need to succumb to an overly flat, roachless, inmast furling mainsail, or a furling boom as heavy as an extra crew member. Repair order software for your type of business, auto, diesel, marine, motorcycle, rv and more. North america and caribbean bamar furling and reefing. When speedwell of rhu was built, in 1988, a slab reefing sail would probably have had a set of plastic sliders in the masts luff groove. Rollerfurling mainsails top 5 problems and how to avoid. Jan 23, 2008 theres no need to succumb to an overly flat, roachless, inmast furling mainsail, or a furling boom as heavy as an extra crew member. The in mast systems probably have a lot more drag than behind the mast systems, so i cant really compare the two.
Although more popular than ever, a furling mainsail is still not 100% standard equipment on todays boats. If the tension is too high, it will damage the bearings. I have never had in mast furling so am totally new to it. At the heart of this inmast furling system is a patented device that evenly distributes the loads on all the stainlesssteel bearings in the upper and lower furling units. The partialbatten mainsail a mc 6500 carbontechnora blend sail with partial epoxy battens. Automatically generate work orders, track work order completion, and access work orders from anywhere with easytouse ftmaintenance cmms software. In mast furling mains the good, bad and ugly cruising.
North sails and future fibres coengineered the helix luff cord, the latest advancement in load sharing technology. Ftmaintenance computerized maintenance management software cmms is a single maintenance software platform for managing work orders, equipment, mro inventory, and preventive maintenance. If you are really interested in the comparison, pm me and i will give you my 2 cents. North america and caribbean bamar furling and reefing sail. Regardless, if you wanted an in mast furling spar you went to ted. Preventive maintenance software gives you the ability to schedule maintenance, send alerts to technicians when a job is due, and increase access to resources that make planned tasks quicker and more effective. The great reliability of the system comes from the furling mechanism itself which is a unique line drive positioned just above the gooseneck facnor patent. Depending on how bad your back is, a furling main may be of minimal help. The sparcraft in mast furler is one example of in mast furlers, see image.
Once your mast is exposed to the elements, air born particles will start collecting on the ball bearing races in your furling drum and boom car. Oct 12, 2012 i have sailed many yachts with mail sail in mast furling systems, and i have never been so unsatisfied with these kind of sails as with all other types i sailed with. How to step the mast with tubeontube furling system. Profurl offers a wide range of manual furling systems. Dec 25, 2016 in mast furling consists of a roller furler unit fitted inside a mast section that has a slot in the aft end for the mainsail to roll in and out of.
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