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Harken’s integral hydraulic backstay adjuster provides the power to optimize sail shape quickly for racers and adjust mast tension for smoother furling for cruisers. The cylinder features a built-in, single-acting pump. Every unit includes a hardcoat-anodized aluminum cylinder and pump, valve, and stainless pump handle with two attachment options: 1) a roll pin, that when installed, locks the handle permanently, 2) the roll pin can be left off and the handle may be inserted when needed, but stored separately. Cylinders include a clevis pin on both ends. A fiberglass position indicator attached to the top clevis pin slides down the cylinder as it’s retracted for repeatable tension settings. Standard eye-jaw toggles fit all Harken cylinders and are recommended on all installations. The pressure-release knob turns clockwise to close and pump, counterclockwise to release. When closing the pump, the knob cannot be over-tightened by hand, preventing damage to the valve. Release speed depends on how far open the knob is turned. Pressure relief is factory set to prevent crew from over-tensioning the backstay. Harken integral backstay adjusters come in four sizes to fit boats 9 - 18 m (30 - 60') with stay diameters of 5 - 10 mm (7/32 - 3/8").
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Harken recommends attaching a…
Harken recommends attaching a toggle to the cylinder’s bottom clevis to accommodate stay movement. Standard eye-jaw toggles fit all Harken cylinders.
-6 Single-Acting Integral Backstay Cylinder — 25 mm Bore
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Introducing the Harken Single-Acting Integral Backstay Adjuster
Find out more about the new Harken single-acting integral backstay adjuster.
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Hydraulic Backstay Adjusters: Sailtec vs. Navtec
Following navtecs redesign of its entire line, the two brands are remarkably similar. choosing between the two is difficult..
When seven mechanical backstay adjusters were reviewed (in last falls August 15 issue), a promise was made to examine hydraulic models.
As it turns out, there apparently are but two makes-Navtec and Sailtec-available in the United States. Stearns and Merriman used to make them. No more. Overseas, Englands Seaway has dropped out of the European picture, leaving a couple of small German makers to compete with Navtecs big network of distributors.
Through some complicated sell-offs, mergers and acquisitions, Navtec wound up as Navtec Norseman Gibb or Navtec & Norseman Gibb, all under the umbrella of something called Vector Marine. The important part is that Navtec, through Norseman and Gibb, acquired a dealer and service network in England and France. It sounds like a budding monopoly on a global scale.
Except for Bob Brehm, up in Oshkosh, Wisconsin. Bob is keeping Navtec honest. In fact, in the last several years, it sometimes seems like Sailtec, the little five-man company hes owned for 10 years, has not only been keeping Navtec honest, its been keeping them up all night.
Navtec ruled for a long while.
But, competitively speaking, Bob Brehm found not one but two Achilles Heels.
By using the hydraulic cylinder as the case and by placing the return line and gauge on the outside, his Sailtec adjusters could be made less expensively and could have longer strokes-the latter very important because of the trend toward bendy rigs, some with split backstays that require considerable take-up.
The exposed return line is not pretty. I wish I had theirs, Brehm said, but that good-looking case is very costly.
A minor advantage of the exposed return line is that it permits easy conversion to a remote panel and pump, if later desired. (The same gear can be used to power a boom vang.)
Navtecs models, in three basic sizes, had strokes of 7″, 8″ and 8.5″. Sailtec offered roughly the same nominal sizes in both standard sizes (with strokes greater by 2″) and long versions (with strokes almost twice as great).
Sailtec also was shaving Navtecs prices. Looking at comparable models, a #12 Navtec, 24.8″ closed and 32.8″ open, discounts for $974.95. A Sailtec #12 Standard, 24″ closed and 34″ open, sells for $953.90.
The price difference for an individual buyer is not great; but its important to a cost-conscious boatbuilder. (For the keen racing sailor, the Sailtecs also are somewhat lighter in weight.)
Navtec Regroups When Navtec decided to respond to Sailtecs pressure, it didnt flinch. It re-designed its entire line, engineering from the ground up, testing continually.
Scheduled to have been introduced at the Annapolis show, the new models will be ready on January 1, 2000.
Navtec very kindly loaned to Practical Sailor a prototype of its new line. It looks remarkably like a Sailtec, mostly because of the exposed return line, but we didnt say that to Beau LeBlanc, Navtecs very knowledgeable sales manager, when he dropped off the prototype.
Were not sure about the return line, he said, whether itll be stainless or Kevlar. And were still experimenting with the gauge housing. The gauge, by the way, will have an expanded face to make reading easier.
Maybe the biggest improvements are the increase in stroke and moving the gauge from the bottom to the top of the tube for easier reading. Of course, the prices will be lower than the old ones.
LeBlanc said Navtec also is looking at ways to put calibration marks on the rod as it exits the cylinder. It would be a quick look advantage to not have to read the gauge.
We havent figured that out yet, he said. Its not easy to put markings on the kind of polish thats required on a hydraulic rod.
Oshkosh Responds Checking back with Oshkosh about Navtecs new exterior return line produced from Bob Brehm this comment:
Im flattered.
Then he explained that although he has over the last five years or so made 17 running changes (as engineers call improvements to existing equipment), Sailtec now has under way a design sweep (which is what Navtec just finished doing).
To begin with, you know where the gauge is going, Brehm said.
Well be at Annapolis this fall when Navtec unwraps its new stuff, Brehm added.
And theyd better be at the Miami boat show next year.
The Bottom Line Navtec and Sailtec backstay adjusters both benefit from the principles of hydraulics, which greatly magnifies fluid pressures. The equipment also is almost foolproof; its designed to fail in the safe position.
Its relatively easy, as with both the Navtec and Sailtec equipment, to build in an adjustable pressure relief valve that prevents a careless user from overtensioning a boats rig or breaking something.
The aircraft aluminum cylinders-gun drilled, honed and polished-never wear out. Nor does the powerful piston and rod, usually made of stainless running in bronze bearings. The seals and valves rarely fail. All because everything that moves is bathed in fine hydraulic oil.
When something fails, its usually the pump. A complete re-build typically costs $300 to $400, about a quarter of the original cost.
Navtec and Sailtec peck away at each other, arguing about needle vs. ball valves, who has the beefier piston rod, whose takes the fewest strokes, which can stand a side-load, etc.
But they openly admire each others equipment.
For Practical Sailor, its not possible to pick one over the other. If its good looks, the old Navtec with the squarish case was the winner. And if you want one, youd better move now. Theyll be gone next year.
If its price, Sailtec has had the edge.
With Navtec lowering prices (not finalized yet) on its new models and Sailtec immersed in a design sweep, who knows what happens next?
One thing for sure: This is as good an example as one will ever find of the value to the consumer of a spirited, appreciative competition between two good companies-one large, one small-determined to out-do each other.
Contacts- Navtec Norseman Gibb, 351 New Whitfield St., Guilford, CT 06437-0388; 203/458-3163. Sailtec, 1712 Graber St., Oshkosh, WI 54901; 920/233-4242.
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Backstay adjuster
- Thread starter sailingsoon
- Start date Aug 19, 2021
- Forums for All Owners
- Ask All Sailors
sailingsoon
Hi again guys In order to have a better shape, ect on my main i would like to install one backstay adjuster. Now then, for my Bristol 24 I'm incline for a mechanical one. Options /price are the factor. Thx in advance for your advise which is always appropriate it. C
SBO Weather and Forecasting Forum Jim & John
Backstay adjuster - With wheel - For 5/6/7 wire - Dia pin 12 mm | Wichard Marine
Davidasailor26
The Bristol 24 looks like a masthead rig, correct? If so I wouldn’t expect to be able to shape the main very much with backstay tension. A fractional rig will bend, but masthead rigs don’t move nearly as much. A tensioner can still be used to help take some sag out of the head stay in heavier wind, but effect on the main is less.
jssailem said: I opted for the Wichard model View attachment 197354 Backstay adjuster - With wheel - For 5/6/7 wire - Dia pin 12 mm | Wichard Marine The article Backstay adjuster - With wheel - For 5/6/7 wire - Dia pin 12 mm is on the Wichard Marine website! Discover all our Ridoirs and all our product ranges. marine.wichard.com Works fine. Easy to adjust. Click to expand
Davidasailor26 said: The Bristol 24 looks like a masthead rig, correct? If so I wouldn’t expect to be able to shape the main very much with backstay tension. A fractional rig will bend, but masthead rigs don’t move nearly as much. A tensioner can still be used to help take some sag out of the head stay in heavier wind, but effect on the main is less. Click to expand
dlochner said: boats of this era have masts that resemble telephone poles. Because they don’t bend much the effect on mainsail trim is minimal. However it will addtension to forestay which can affect jib trim and roller furled function. Click to expand
Yes. My mast head rig tensioner adjusts the tension on the Forestay/Furler extrusion.
sailingsoon said: So, what would you recommend as a "tensioner"? Click to expand
sailingsoon said: Thats what im looking for create tension on tbe forestay and eliminate the sag Click to expand
Sailfanatic
Joe said: There are numerous examples of various systems via google. Ronstan and Harken are two manufacturers that offer pre made rigs, or you can simply build one yourself. The wheel system works fine, and is very precise, but it's time consuming to use... You crank it on by spinning the wheel, and go through the same process to release it. Hydraulic systems need to be pumped on.... the release, however, is as simple as just flicking the relief valve. You can spend big bucks on the beautiful machinery type adjusters.... or just use a block and tackle with a cam cleat.... 4:1 doubled with a dyneema cascade to 8:1. The example below is what I plan to convert to. Click to expand
Wichard or block and tackle adjusters are good for a single backstay, but what do you do with a a split that terminates at the masthead rather than a short split that merges into a single backstay.
DougM said: Wichard or block and tackle adjusters are good for a single backstay, but what do you do with a a split that terminates at the masthead rather than a short split that merges into a single backstay. Click to expand
Scott T-Bird
It's a worthwhile addition. If it's a split backstay, I prefer @Joe solution. It's a very good one. If it is a single backstay, the Wichard would be my choice. I used a Johnson split backstay car on my Starwind and did not really like it. There was too much friction and the car would not release until I manually pushed it up.
Sailfanatic said: A block and tackle system is the natural solution for a boat with a split backstay. But the OP has an older boat with a single backstay and it would be a major pain to attempt to install two new chain plates to try to go to a split, so a device like the Wichard can easily be installed inline by shortening the existing backstay. Seems the only way to do it. Click to expand
With my split backstay and a 48 foot mast, that triangular block system would end up near the top of the mast resulting in a large investment in extra line. Logic says that the obvious approach would be to convert to a single from a split a few feet above the deck. If I wanted to double up on hardware I could convert to running backstays… Oh well, I don’r race any more anyway, so best choice is find a happy medium, and forget the whole idea.
Let’s get you sailing soon. Photo of your deck stern chainplate and the terminal end of your back stay would be helpful.
jssailem said: Let’s get you sailing soon. Photo of your deck stern chainplate and the terminal end of your back stay would be helpful. Click to expand
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Sail Faster with SAILTEC
SAILTEC, Inc. has specialized in designing and building hydraulic tension and rig control for sailboats and custom marine hydraulics since 1983. Our cost effective and durable hydraulic solution, coupled with a serious dedication to customer service and product support has made SAILTEC the first production boat source for many top sailboat brands for over twenty years.
We manufacture hydraulic/pneumatic cylinders, hand pumps, and 12V & 24V electric pumps that operate to 5000 psi (350 bar) and can generate up to 100 ton of force. Our latest products include hydraulic control of hatches, transom doors, swim platforms, keel lifting, radar lifts and other specialized applications.
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The Unique Burial of a Child of Early Scythian Time at the Cemetery of Saryg-Bulun (Tuva)
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Pages: 379-406
In 1988, the Tuvan Archaeological Expedition (led by M. E. Kilunovskaya and V. A. Semenov) discovered a unique burial of the early Iron Age at Saryg-Bulun in Central Tuva. There are two burial mounds of the Aldy-Bel culture dated by 7th century BC. Within the barrows, which adjoined one another, forming a figure-of-eight, there were discovered 7 burials, from which a representative collection of artifacts was recovered. Burial 5 was the most unique, it was found in a coffin made of a larch trunk, with a tightly closed lid. Due to the preservative properties of larch and lack of air access, the coffin contained a well-preserved mummy of a child with an accompanying set of grave goods. The interred individual retained the skin on his face and had a leather headdress painted with red pigment and a coat, sewn from jerboa fur. The coat was belted with a leather belt with bronze ornaments and buckles. Besides that, a leather quiver with arrows with the shafts decorated with painted ornaments, fully preserved battle pick and a bow were buried in the coffin. Unexpectedly, the full-genomic analysis, showed that the individual was female. This fact opens a new aspect in the study of the social history of the Scythian society and perhaps brings us back to the myth of the Amazons, discussed by Herodotus. Of course, this discovery is unique in its preservation for the Scythian culture of Tuva and requires careful study and conservation.
Keywords: Tuva, Early Iron Age, early Scythian period, Aldy-Bel culture, barrow, burial in the coffin, mummy, full genome sequencing, aDNA
Information about authors: Marina Kilunovskaya (Saint Petersburg, Russian Federation). Candidate of Historical Sciences. Institute for the History of Material Culture of the Russian Academy of Sciences. Dvortsovaya Emb., 18, Saint Petersburg, 191186, Russian Federation E-mail: [email protected] Vladimir Semenov (Saint Petersburg, Russian Federation). Candidate of Historical Sciences. Institute for the History of Material Culture of the Russian Academy of Sciences. Dvortsovaya Emb., 18, Saint Petersburg, 191186, Russian Federation E-mail: [email protected] Varvara Busova (Moscow, Russian Federation). (Saint Petersburg, Russian Federation). Institute for the History of Material Culture of the Russian Academy of Sciences. Dvortsovaya Emb., 18, Saint Petersburg, 191186, Russian Federation E-mail: [email protected] Kharis Mustafin (Moscow, Russian Federation). Candidate of Technical Sciences. Moscow Institute of Physics and Technology. Institutsky Lane, 9, Dolgoprudny, 141701, Moscow Oblast, Russian Federation E-mail: [email protected] Irina Alborova (Moscow, Russian Federation). Candidate of Biological Sciences. Moscow Institute of Physics and Technology. Institutsky Lane, 9, Dolgoprudny, 141701, Moscow Oblast, Russian Federation E-mail: [email protected] Alina Matzvai (Moscow, Russian Federation). Moscow Institute of Physics and Technology. Institutsky Lane, 9, Dolgoprudny, 141701, Moscow Oblast, Russian Federation E-mail: [email protected]
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Savvino-storozhevsky monastery and museum.
Zvenigorod's most famous sight is the Savvino-Storozhevsky Monastery, which was founded in 1398 by the monk Savva from the Troitse-Sergieva Lavra, at the invitation and with the support of Prince Yury Dmitrievich of Zvenigorod. Savva was later canonised as St Sabbas (Savva) of Storozhev. The monastery late flourished under the reign of Tsar Alexis, who chose the monastery as his family church and often went on pilgrimage there and made lots of donations to it. Most of the monastery’s buildings date from this time. The monastery is heavily fortified with thick walls and six towers, the most impressive of which is the Krasny Tower which also serves as the eastern entrance. The monastery was closed in 1918 and only reopened in 1995. In 1998 Patriarch Alexius II took part in a service to return the relics of St Sabbas to the monastery. Today the monastery has the status of a stauropegic monastery, which is second in status to a lavra. In addition to being a working monastery, it also holds the Zvenigorod Historical, Architectural and Art Museum.
Belfry and Neighbouring Churches
Located near the main entrance is the monastery's belfry which is perhaps the calling card of the monastery due to its uniqueness. It was built in the 1650s and the St Sergius of Radonezh’s Church was opened on the middle tier in the mid-17th century, although it was originally dedicated to the Trinity. The belfry's 35-tonne Great Bladgovestny Bell fell in 1941 and was only restored and returned in 2003. Attached to the belfry is a large refectory and the Transfiguration Church, both of which were built on the orders of Tsar Alexis in the 1650s.
To the left of the belfry is another, smaller, refectory which is attached to the Trinity Gate-Church, which was also constructed in the 1650s on the orders of Tsar Alexis who made it his own family church. The church is elaborately decorated with colourful trims and underneath the archway is a beautiful 19th century fresco.
Nativity of Virgin Mary Cathedral
The Nativity of Virgin Mary Cathedral is the oldest building in the monastery and among the oldest buildings in the Moscow Region. It was built between 1404 and 1405 during the lifetime of St Sabbas and using the funds of Prince Yury of Zvenigorod. The white-stone cathedral is a standard four-pillar design with a single golden dome. After the death of St Sabbas he was interred in the cathedral and a new altar dedicated to him was added.
Under the reign of Tsar Alexis the cathedral was decorated with frescoes by Stepan Ryazanets, some of which remain today. Tsar Alexis also presented the cathedral with a five-tier iconostasis, the top row of icons have been preserved.
Tsaritsa's Chambers
The Nativity of Virgin Mary Cathedral is located between the Tsaritsa's Chambers of the left and the Palace of Tsar Alexis on the right. The Tsaritsa's Chambers were built in the mid-17th century for the wife of Tsar Alexey - Tsaritsa Maria Ilinichna Miloskavskaya. The design of the building is influenced by the ancient Russian architectural style. Is prettier than the Tsar's chambers opposite, being red in colour with elaborately decorated window frames and entrance.
At present the Tsaritsa's Chambers houses the Zvenigorod Historical, Architectural and Art Museum. Among its displays is an accurate recreation of the interior of a noble lady's chambers including furniture, decorations and a decorated tiled oven, and an exhibition on the history of Zvenigorod and the monastery.
Palace of Tsar Alexis
The Palace of Tsar Alexis was built in the 1650s and is now one of the best surviving examples of non-religious architecture of that era. It was built especially for Tsar Alexis who often visited the monastery on religious pilgrimages. Its most striking feature is its pretty row of nine chimney spouts which resemble towers.
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SAILTEC was one of the first companies to combine a hydraulic cylinder with a small hydraulic pump commonly known as an Integral.
For almost 30 years SAILTEC has manufactured and improved the Integral. This proven Integral hydraulic adjuster now features a low profile hydraulic pressure gauge mounted at top of cylinder tube. The top mount location allows easier gauge reading and low profile provides secure and snag-free operation.
SAILTEC has also modified the design of the pump lever and handle on the integral adjuster. This new design provides a more compact dimension to the integral assembly and enhances product appearance with 316 stainless steel handle and new textured all-weather handgrip (Kung Foo Grip).
Sailtec Remote Gauge.
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Whether you're a racer or a cruiser, an adjustable backstay will improve your sailing experience, enhance performance, and get you where you're going faster and in more control. Resources. Hydraulic Adjusters. Sailtec, 920-233-4242. Harken Custom Hydraulics, 262-691-3320.
Backstay Adjuster Systems. Backstay adjusters allow racers and cruisers to adjust and control mast rake and headstay tension. Adjusting the backstay shapes the main to optimize upwind and downwind performance. On racer/cruisers, tightening the backstay increases headstay tension for upwind sailing, while loosening the backstay offwind reduces ...
Adjustable backstay designs fall into two types: direct and indirect. With a direct adjustable backstay, the adjuster (typically a tackle system) is integrated into the backstay. The adjuster directly controls the length of the backstay and bears the full load of the backstay. This is the type of system that I'll describe how to make in this ...
Harken's integral hydraulic backstay adjuster provides the power to optimize sail shape quickly for racers and adjust mast tension for smoother furling for cruisers. The cylinder features a built-in, single-acting pump. Every unit includes a hardcoat-anodized aluminum cylinder and pump, valve, and stainless pump handle with two attachment options: 1) a roll pin, that when installed, locks ...
The R.D.M. adjusters come in two sizes-for 3/8″ and 1/2″ pins. They list for $310 to $514. Spinlock The little Spinlock backstay adjuster in our collection is from a small British firm known for its hiking sticks and line-handling hardware (including a new and very unusual rope clutch that we will be examining in a few weeks).
Steps and considerations for adding a backstay adjuster (tensioner) to a Precision 18 sailboat with a fractional rig. Backstay adjusters allow bending of the...
Description. Make quick backstay adjustments using the power of hydraulics. Harken Hydraulic Backstay Adjusters give sailors the power to tension the backstay and optimize sail shape quickly. An integrated, double-action pump delivers oil on push and pull strokes of the lever and is twice as fast as single action pumps; backstay adjustments are ...
When seven mechanical backstay adjusters were reviewed (in last falls August 15 issue), a promise was made to examine hydraulic models. ... And theyd better be at the Miami boat show next year. The Bottom Line Navtec and Sailtec backstay adjusters both benefit from the principles of hydraulics, which greatly magnifies fluid pressures. The ...
Harken reliability you expect for less than you might expect.It's one of the best things about sailors: we hate to give up on our equipment. But if you're li...
4710.00 lb. 2130.00 kg. DESCRIPTION. Harken's integral hydraulic backstay adjuster provides the power to optimize sail shape quickly for racers and adjust mast tension for smoother furling for cruisers. The cylinder features a built-in, single-acting pump. Every unit includes a hardcoat-anodized aluminum cylinder and pump, valve, and stainless ...
Backstay & Babystay Rigging. A backstay is a part of the standing rigging that runs from the mast to back of the boat, counteracting the forestay and headsail. It is an important sail trim control and has a direct effect on the shape of the mainsail and the headsail. Backstays are generally adjusted by block and tackle, hydraulic adjusters, or ...
Shop a full range of Sailtec Hydraulic Integral Backstay Adjusters (One-Design) at MAURIPRO Sailing Store. Complete tech support and free shipping on orders over $99. ... Sailtec Hydraulic Integral Backstay Adjusters (One-Design) Integral Backstay Adjuster -08 (For J-105) $2,000.00 (List Price: $2,335.00) 14% OFF This Week! You save $335.
Beneteau 323 Manistee, MI. Aug 21, 2021. #17. With my split backstay and a 48 foot mast, that triangular block system would end up near the top of the mast resulting in a large investment in extra line. Logic says that the obvious approach would be to convert to a single from a split a few feet above the deck.
SAILTEC, Inc. has specialized in designing and building hydraulic tension and rig control for sailboats and custom marine hydraulics since 1983. Our cost effective and durable hydraulic solution, coupled with a serious dedication to customer service and product support has made SAILTEC the first production boat source for many top sailboat ...
Shop Wichard sailboat Backstay Adjuster at MAURIPRO Sailing Store. Complete selection and technical information on all. Free shipping on orders over $99.
Welcome to the 628DirtRooster website where you can find video links to Randy McCaffrey's (AKA DirtRooster) YouTube videos, community support and other resources for the Hobby Beekeepers and the official 628DirtRooster online store where you can find 628DirtRooster hats and shirts, local Mississippi honey and whole lot more!
Split Backstay Adjuster 3.3 out of 5 Customer Rating Model # P004565974. $13.99 - $99.99 Model # P004565974. Buy More, Save More thru 5/13 with code SAVEMORE ... Higher ratios may require manual release with aid of boat hook, etc. Specifications www.P65Warnings.ca.gov. West Advisor: Advice & How-To Articles Suggested Cruising Gear ...
Burial 5 was the most unique, it was found in a coffin made of a larch trunk, with a tightly closed lid. Due to the preservative properties of larch and lack of air access, the coffin contained a well-preserved mummy of a child with an accompanying set of grave goods. The interred individual retained the skin on his face and had a leather ...
Zvenigorod's most famous sight is the Savvino-Storozhevsky Monastery, which was founded in 1398 by the monk Savva from the Troitse-Sergieva Lavra, at the invitation and with the support of Prince Yury Dmitrievich of Zvenigorod. Savva was later canonised as St Sabbas (Savva) of Storozhev. The monastery late flourished under the reign of Tsar ...
Sailtec Hydraulic Integral Backstay Adjusters (Non Locking) As boats get bigger and headstays longer, both easy adjustment and accurate backstay tension become increasingly important. The solution to this is hydraulics. A hydraulically controlled backstay permits quick adjustment of headstay sag and mast bend, which can make boats sail faster ...
Dmitriy V. Mikheev, Karina A. Telyants, Elena N. Klochkova, Olga V. Ledneva; Affiliations Dmitriy V. Mikheev
Note: The J105 & J109 backstay adjusters do NOT come with the tension gauge per the J-Class association. However, this is not a class rule and the gauge may be added with specific notes to do so. Sailtec Remote Gauge.