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technology

WebTruss™ Technology: Designed with the all mountain user in mind, the WebTruss™ provides unmatched strength and ¬†enables set up in adverse conditions, including high winds.

Advantages of the WebTruss™:

  • Strength: Titanium Dioxide Coating is where it needs to be, Whenever a shelter is subject to long term UV exposure, we have coated the fabric with Titanium Dioxide. Made of 70D double sided silicon coated elastomer with a nylon 66 fabric, the WebTruss™ has higher tear and abrasion strengths than comparable Denier fabrics. At the entrance of each pole sleeve on the WebTruss™ is a built in adjustable tensioner that allows the user to gain the appropriate stiffness during set up. Once tensioned, it significantly increases the strength of the WebTruss™.
  • Low Wind Profile: With a significantly smaller wind profile, the WebTruss™ can be pitched at altitude in extreme conditions when time is of the essence.
  • Ease of Pitch: All tent poles are the same length. This makes pitching the tent easier and faster. All WebTruss™ sleeves are continuous which makes it easy for one person to pitch the tent. All sleeve openings have a reflective strip that makes pitching the WebTruss™ at night much easier than traditional tents.

The WebTruss™ is featured on the following SlingFin tents:

  • OneUp
  • HardShell
  • Kahiltna Dome

All plastic clips used on our tents are designed by SlingFin and custom made for us.
The Reverse Gate CobraClip™ is used at all pole intersections on the BFD and LFD.
The RidgeClip™ is a smaller general-purpose clip that is used to attach tent bodies to our Web Trusses on the Last Resort, High & Mighty and One Up.

Clip Details:

Reverse Gate Cobra Clip
Made of Acetyl which is the best choice of plastic for cold environments.
Stainless steel wire gate.
Reverse opening for ease of use and better leverage for locking the gate in the closed position. The term reverse gate is used to describe the direction the gate opens. On the Cobra Clip the gate opens outward away from the clip. This creates a larger opening which makes it easier to hook the clip around the tent poles.
Positive tension locking system so the gate will not open under tension.
Ergonomically designed for ease of use. This sounds like marketing BS but try using a Cobra Clip with gloves on and judge for yourself.


Ridge Clip
Made of Acetyl which is the best choice of plastic material for cold environments.
Stainless steel wire gate.
The gate opens inward like a carabiner.

ET70 Details:
Base Fabric. 70D nylon 66, made in the US. Nylon 66 fabrics are far superior to nylon 6 fabrics. They are more UR resistant and have higher tear and abrasion strengths. Because the dye is added to the coating and not to the fabric, ET70 is much stronger than comparable Denier fabrics. This allows our base fabric to go through less processing which makes the base fabric much stronger than most fabrics that go through additional finishing processes which weakens the fabric.

Titanium Dioxide Coating. Titanium Dioxide coatings are very UV resistant. This is especially important for tents that are pitched at high altitudes for long periods of time. Historically Titanium Dioxide coatings have been added to fabrics using paper transfer paper. The transfer paper is discarded after each use. SlingFin worked with Dimension Polyant to find a more environmentally friendly method of coating the fabric.
Now Dimension Polyant uses recyclable plastic films for applying the transfer coatings. The plastic film produces a shiny finish on the coating but that is a small price to pay as compared to wasting thousands of yards of transfer paper. The coatings are applied here in the US at the Dimension Polyant mill in Putnam Connecticut. All excess solvents are reused and the factory has a state of the art air filtration system so no harmful vapors are released into the atmosphere. ET70 is one of the most UV resistant fabrics ever made for the weight.

ET90 Details:
Please note that all tents made with ET90 are special order.
Base Fabric. 90D nylon 66, made in Germany. This is a high strength fabric produced for the sailing industry.
Titanium Dioxide Coating.
All details of the Titanium Dioxide coating for ET90 are the same as ET70.
If you have specific questions regarding SlingFin fabrics and coatings please contact us.

More fabric details will be added shortly.

All SlingFin tents come equipped with DAC Tent Poles.
DAC tent poles
Lighter and Stronger Lighter weight promotes better technique and substantially enhances the outdoor experience. However, poles must also be safe. DAC tent poles are engineered better to provide the increased strength and reliability required to safely cope with the most demanding conditions. The DAC tent pole range includes various type of tubes to suit different applications from heavy duty expedition to lightest possible backpacking.
TH72M - a better material. Helinox poles are made by DAC - the world leader in ultra light weight technology. DAC developed TH72M - the aluminum alloy that has set the new benchmark for strength to weight performance. Tough, durable, robust TH72M is the clear first choice in material for light weight outdoor adventure equipment where dramatic brittle failure (a characteristic of carbon fiber) must be avoided. Only Helinox poles are made from TH72M.
Eco-friendly Aluminum is anodized to maintain appearance and prevent corrosion. DAC received international recognition for developing the unique process of "green" anodizing TH72M. DAC's "eco friendly" process avoids the use of toxic chemicals like phosphoric and nitric acid. The non toxic work environment helps maintain the health of the DAC production team and conforms with DAC's absolute commitment to responsible corporate citizenship.
Expert Engineering. DAC has led the world in lightweight technology for more than twenty seven years. The highest level of engineering skill and experience is supported by a sophisticated system of planning, control and monitoring. DAC can respond to specific requirements and meet the most demanding criteria and specifications.
Various accessories. DAC provides nice 'screwlock' tips for easy repair - short tip, long tip, mushroom head tip, ball tip, etc. Nice looking compact J stakes are available. DAC also provides various kind of hubs and other accessories for tent designers which make possible to develop many different types of tent pole architectures.

Tents
Double needle flat felled seams (lockstitch). This is a very strong seam used to sew lightweight fabrics together. All our double needle lap felled seams are sewn with ¼” gauge double needle, needle feed sewing machines. Depending on the fabric either a mechanical puller is used or a second operator helps apply tension to the fabric as the fabric is being sewn. Ultralight fabrics and silicone coated fabrics, where both sides of the fabric have a silicone elastomer coating, are especially difficult to sew without puckering. That is why mechanical pullers or second operators are used.
Fabric Coatings. We use polyether, Titanium Dioxide or silicone elastomer coatings on our waterproof fabrics. We do not use PU (polyester urethane) coatings which are hydrophilic (absorb moisture) and start smelling like a locker room over time. PU is the appropriate acronym! PU coatings are not very durable and start deesterfying over time. It is rather unintuitive that (PU) waterproof coatings absorb moisture. That is why we use hydrophobic PE coatings instead of PU coatings. The story gets more complicated so rather than bore you to death we will add a link with more details as we build out the site.
Waterproof ratings. There are many tests to determine the waterproofness of fabrics. Mullen Burst tester, Suter tester and water column testing devices provide the most useful data that can use for comparative purposes. SlingFin provides waterproof data using the water column test method.
Titanium Dioxide bias binding. SlingFin is the first to use ET70 (titanium dioxide bias binding) on tent body and Web truss perimeters (BFD, LFD, High & Mighty and the Last Resort). This is an important detail since nylon and polyester bias bindings will degrade much sooner than the rest of the tent and Web Truss which is made of ET70.
Nylon bias binding sewing. All seams sewn with bias binding are sewn with a double needle, needle feed sewing machine with a 1/8” needle gauge.
Perimeter reinforcement. We use ½” to 3/4" nylon or polyester grosgrain to reinforce the perimeter of tarps (Under the Influence) and flysheets (One Up). This feature is applied to add strength and to reduce perimeter bias stretch. This is especially important on tarps which act as wings and often have tremendous forces applied to them in windy conditions.
Oversized YKK zippers. We use #10 YKK® zipper chain with double nickel coated zipper sliders on the doors of the BFD, LFD and Last Resort.
Reinforced doors. The BFD, LFD and Last Resort have two 900D reinforcements on the door frame and one large 900D reinforcement on the door itself.
Grosgrain reinforcements. All perimeter tie-outs and grommet tabs have a grosgrain reinforcement. This helps to strengthen the tent fabric in high stress areas where the fabric is under excessive tension or areas with bar tacks.
Low stress doors. SlingFin designs its doors differently than other tent companies. We modify the door patterns so there is extra fabric on the inner portion of the door. This reduces zipper slider and zipper chain stress when the tent is dry and extra taught. This may make the door look slightly loose while the tent is in humid environments but the loss of aesthetics is minor as compared to the functionality, ease of use and durability one gets with the low stress door design.
Titanium Dioxide window covers. (BFD, LFT, Last Resort, High & Mighty). All clear windows on SlingFin tents, made with ET70 fabric, have a window cover made of ET70. While our clear window film is very durable it is not as UV resistant as ET70.
WebTruss™. Designed to make any tent stronger and easier to set up. Please see the image and extended description of the Web Truss for more information. Please click here.
Reflective Guy Outs. All guy-out loops have a reflective strip.
Grommet tab guides for tents with different pole lengths. The BFD has 15 poles with 3 different lengths. The LFD has 10 poles with 2 different lengths. Each grommet tab is labeled S (short) M 9 (medium) or L for (long) to make pitching these tents easier than ever. If the poles are all the same length then there are no pole size labels (Last Resort, High & Mighty and the One Up).
Reflective sleeve openings on WebTruss™. All WebTruss™ sleeve openings have a reflective strip of grosgrain which makes pitching your tent in the dark easier than ever.
Tent tube. All SlingFin tents are equipped with Easton® Expedition grade 7075-T9 tent tube. Easton aluminum tent tube is hard anodized and has the highest yield strength available in the industry. For more detailed information on Easton tent poles Please click here.
Back Tacking and Bar Tacking. All stress points are reinforced with extra fabric or grosgrain and sewn with a bar tack or reinforced by back tacking the stress area. Back tacks are most commonly applied to stress areas that would be damaged by a bar tack machine.