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Page Contents:
All About Ropes
Your life is literally on the line, so take time to educate yourself before making a purchase. Rope used for climbing must be designed for the application, and from a reputable brand and supplier. Be wary of online deals for “climbing rope” with unknown (or possibly counterfeit) branding. Ape Canyon is a premier supplier and you get a 15% discount with the JRB15 coupon code.
Rope vs Cord
Cord and rope are similar but different. Don’t use cord as a rope. This article summarizes it well: Rope vs Cord. See dedicated page for cord, which is typically used to form friction hitches on our rope.
Rope Construction
Most ropes and many cords are constructed of a “kernmantle” design, with a distinct and separate inner core (kern) and outer sheath (mantle). The braiding on the sheath is also variable: The more strands/plaits, the smoother the outside of the sheath. A product described as a “double braid” indicates that the core is also braided. Dynamic ropes tend to be Kernmantle double braids and Static ropes tend to be Kernmantle Single Braids. See this page from Marlow for images and more detail:
marlowropes.com/innovation/rope-constructions
Rope Fibers
See dedicated page to understand the properties of the various fibers used in rope construction:
A Tether is Too Short
Although a “tether” is a popular device in saddle hunting, JRB does not use nor recommend a tether; use a LIFELINE instead. Think of a LIFELINE as an extra long tether which allows us to ascend or descend on the rope, if only in an emergency. Once we are at hunting height, it’s simple to draw up our rope and stuff it in a pouch or drape it wherever convenient. Why not a tether?
- Because we could get STUCK on a tether, in a situation where we have no footing after a stick or platform malfunction. This is a life threatening situation, typically requiring a rescue.
- We can’t rappel off a tether, and that’s the fastest and safest way out of a tree.
A Lineman’s Belt is Inadequate
A “Lineman’s Belt” is a common tool used by Saddle Hunters. It can provide lateral positioning stability and is particularly useful when we need both hands for something, like installing a stand or cutting a branch. However, be aware that a Lineman’s Belt is NOT a fall prevention device because it is not cinched onto the tree. If we lose our footing or experience a failure or kick-out, an injury or fall is likely.
Static vs Dynamic
Static ropes have low stretch and low elongation and are typical for saddle hunting and tree climbing applications, under the premise that the climb should always be executed with minimal slack (measured in inches, not feet). Static ropes are not designed to absorb a fall of any appreciable distance, given that the lack of stretch will deliver an exorbitant ‘impact force’ to the climber than a dynamic rope.
Dynamic ropes are high stretch ropes, typically used by rock climbers and mountaineers, which are capable of absorbing a fall, and deliver less impact force to the climber. Attempts to execute SRT or DSRT on dynamic rope supported by a conventional tree crotch support does work fine, but the climber may be uncomfortable with the amount of stretch or bounce. Trunk anchors made with dynamic rope will stretch when loaded, which could affect the ability for the anchor to choke on the tree. Here’s a reference from the Rock Climbing industry about dynamic Rock Climbing Ropes and ratings: LINK
Half / Twin Ropes
The Rock Climbing industry distinguishes between Single Ropes, Half Ropes and Twin Ropes. Note that these ropes are dynamic ropes and not designed for tree climbing. However, JRB has found no evidence stating that they ropes cannot be safely used for tree climbing applications provided that the system is properly designed. See article:
coloradomountainschool.com/single-half-twin-ropes-mean
Selection Criteria
When selecting your rope, besides obvious things like color, consider:
1. Single vs Doubled Application
- Single rope applications are those where the climber is supported by single strand of rope, such as a Lifeline (tether), SRT, JRB Hitch Climbing and Single Rope Rappel.
- Doubled rope applications are those where the climber is supported by a balanced set of two strands, formed by a doubled rope (a rope folded over a crotch in the canopy). DSRT and MRS(DRT or DdRT) are Doubled Rope Applications. Because the load is halved, an equivalent safety factor can be achieved with a rope which is half the strength.
2. MBS / Safety Factor
For climbing systems with zero or minimal slack (less than a foot) JRB recommends a Safety Factor of 20, indicating that the Minimum Breaking Strength (MBS) is greater than 20 times the load on the line, considering the weight of the climber plus any gear being carried. Examples:
- For a single rope application, a 200lb climber needs a rope with an MBS of at least: 200 x 20 = 4000lb
- For a doubled rope application, a 200lb climber needs a rope with an MBS of at least: 100 x 20 = 2000lb
3. Stiffness
Stiffer ropes don’t bend as well and stiffness inhibits their use in coiling the rope, in forming some knots, and their ability to flow through devices such as the Garda Hitch and Munter Friction Hitch. The bend radius of the rope can be used to measure its stiffness: just pinch a bight with our fingers and see how flat it bends with a moderate squeeze.
4. Rope Diameter
In the table below, JRB has made SUGGESTIONS for rope diameters for non-mechanical climbing systems across two dimensions: 1) single (SRT) vs doubled (DSRT & MRS) rope methods 2) the climber’s weight, including gear.
These recommendations are based upon real-world observations including feedback from the growing team of JRB climbers. Although small diameter ropes can be plenty strong, strength is not the only consideration; also consider:
- smaller diameter cord/rope is harder to break under load
- surface area of contact between the rope & cord
- how soft the rope and cord are
- the construction and materials affects performance
- wet vs dry conditions (see video at bottom of page)
- the amount of use/wear over time can affect hold characteristics
| Rope Diameter vs Total Weight | 8 mm | 9 – 9.5 mm | 11 mm |
|---|---|---|---|
| < 180 lb | DSRT, SRT | DSRT, SRT | DSRT, SRT |
| 180 – 260 lb | DSRT | DSRT, SRT | DSRT, SRT |
| 260 – 320 lb | — | DSRT | DSRT, SRT |
Note:
- This information is subjective and subject to change.
- Climbers assume responsibility for their choices and safety.
Rope Length
The ideal length for a rope climbing system is determined based on multiple factors:
- The the highest available tree crotch height, not our ideal hunting height. For example, if we want our platform at 20′, the TREE might not offer a crotch at a perfect height; it might be much higher. JRB recommends being prepared for a tree crotch of at least 35′.
- If we plan to use our rope to draw up our bow or gear, we need a few extra feet given that we raise the Garda hitch footloop up, creating a temporary S in the rope.
- The System that we are constructing and the anchor (some need more rope than others).
Single Rope System Length
For single rope systems which are capable of alternating anchor usage, JRB recommends 40- 50′ of rope, dependent on the anchor chosen and the maximum tree diameter. “Alternating anchor” describes the need to be able to connect BOTH sides of the rope to the tree while ensuring that he system is retrievable. Relevant info:
Why does the anchor matter? Unlike the Maverick Hitch which explodes, if the Bloodgood Hitch or JRB Cinch is used as the retrievable anchor, we need to anticipate that the rope will not fall during retrieval because it got held up by a branch, snag or nub, requiring that we pull the anchor all the way down into our reach in order to disengage it. JRB did the math and recommends the following minimum rope lengths based on the Maximum/Highest Anchor you will used. Be reminded that your platform is typically 6-7 feet below your anchor.
| Anchor | Min Rope Length |
|---|---|
| Maverick Hitch | Anchor height – 10′ |
| Bloodgood Hitch | (Anchor Height x 2) – 4′ |
| JRB Cinch | (Anchor Height x 2) – 6′ |
Illustration using a 40′ rope and a Bloodgood Hitch:
- 4′ of rope is consumed in forming the Bloodgood Hitch on each end of the rope. The 40′ rope is now effectively 8′ shorter, or 32′ long.
- During worst case retrieval, when we have pulled down the anchor and both ends are at 6′ off the ground (where we can still reach to disengage the anchor), the entire 32′ of rope is above us with 16′ evenly distributed on each side. We can safely conclude that the top of the rope is at: 16′ + 6′ = 22′.
- Reverse engineering the formula: (22 x 2) – 4 = 40.
Here are some examples for the Bloodgood Hitch. Be aware that your platform height will be 6-7′ below your anchor:
- Anchor @22′: (22 x 2) – 4 = 40′ rope
- Anchor @24′: (24 x 2) – 4 = 44′ rope
- Anchor @27′: (27′ x 2) – 4′ = 50′ rope
- Anchor @32: (32′ x 2) – 4′ = 60′ rope
Here are some examples for the JRB Cinch, which needs slightly less rope than the Bloodgood:
- Anchor @23′: (23 x 2) – 6 = 40′ rope
- Anchor @28: (28 x 2) – 6 = 50′ rope
- Anchor @33: (33′ x 2) – 6 = 60′ rope
Bottom line: 40′ for Maverick, 50′ for anything else.
Hybrid Rope System Length
A Hybrid system is one where we can use DSRT most of the time, but if the crotch is too high, we switch over to SRT. JRB recommends 60‘ for Hybrid systems. See:
Universal or DSRT System Length
A Universal or DSRT System, JRB recommends: 80′-100′. JRB’s current hunting system is 88′. See:
Recommended Ropes
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8mm Static Ropes
Teufelberger Resc Tech
This is a fantastic 8mm rope for a DSRT system, with minimal bulk, and great flexibility; easy to tie knots. After significant use, the sheath will stretch and become longer than the core, requiring maintenance (milking).
- Construction: Technora®/Poly blend sheath over UHMWPE / Polypropylene core
- Strength: 29 kN or 6525 lb
- Weight: 2.8 lb / 100ft
- Sheath braid: 32 plait
https://www.apecanyon.com/product/teufelberger-resc-tech-8mm
Sterling Oplux
Very similar to Resc Tech; good choice for DSRT. Slightly softer and more sheath stretch. Color is brighter than ideal for a hunter.
- Construction: Technora®/Poly blend sheath over Spectra® core
- Strength: 24.3 kN or 5440 lb
- Weight: 2.8 lb / 100ft
- Sheath braid: 32 plait
https://www.apecanyon.com/product/sterling-8mm-oplux-tactical-rope
9mm Rubicon
Introduced in 2025, this is JRB’s all-around favorite static rope. It has a Technora/Polyester cover over a Nylon Core. The MBS is a whopping 6261 lb, or 30.99 kN.
https://www.apecanyon.com/product/9mm-rubicon/
9.5mm Static Ropes
Ape Canyon Rogue
This 9.5 mm rope is more expensive, but also more bendable. Great for SRT, DSRT or a Universal System.
- Construction: Technora® sheath over Nylon core
- Strength: 30 kN or 6744 lb
- Weight: 4.2 lb / 100ft
https://www.apecanyon.com/product/ape-canyon-outfitters-rogue-9-5mm
Canyon Elite
This is a high quality static rope, but did not hold up to wear as well as the other ropes, showing more fraying in the sheath after an active season of use. It is advertised as 9mm, but at least 9.5 on JRB’s caliper. It performs well in SRT, DSRT or a Universal System. Color is brighter than ideal.
- Construction: Technora® and Polyester cover over a dry treated Nylon core
- Strength: 30.1 kN or 6770 lb
- Weight: 4.4 lb / 100ft
- Sheath braid: 32 plait
https://www.apecanyon.com/product/teufelberger-9mm-canyon-elite
Ape Canyon Ghillie
This 9.5 mm rope has a fantastic color scheme for a hunter and works well as a rappel rope, or SRT or a Universal System. However, it is stiffer than ideal. This is noticed particularly in DSRT, requiring more effort to get 2 strands flowing through a Garda Hitch in ascent.
- Construction: Polyester core and sheath
- Strength: 25.95 kN or 5834 lb
11+mm Static Ropes
Marlow Protec 500
This 11mm rope is surprisingly light but is also very stiff. It works for SRT applications, but requiring more effort to coil and operate with a Garda Hitch footloop. Because of the stiff profile, it is not great for tying most knots. If attempting DSRT on this rope, larger carabiners are required.
- Construction: Technora® over a Nylon core
- Average Strength: 49.1 kN or 13423 lb
- Sheath braid: 32 plait
https://www.apecanyon.com/product/marlow-11mm-protec-500
Also refer to the arborist collection at RockNArbor: Arborist Ropes
Dynamic Half/Twin Ropes
As per the rope rating system (referenced above), we should not used half/twin ropes in single rope (SRT) applications. However, JRB has built DSRT systems with Dynamic Half Ropes such as Mammut Aline Dry, Edelrid Skimmer and Petzl PASO Guide. Be aware that these ropes were not designed for a tree climbing application and so the climber must accept any risk associated with that. Note that dynamic ropes are often not specified with an MBS, and generally not available by the foot. Note: 30m = 98 ft. 50m =164 ft, enough for two systems.
More info
JRB End Loop
In order to be prepared for any rigging scenario, JRB recommends installing the JRB End Loop on one or both ends of the rope after purchase.
Coiling & Storage of Rope
JRB uses a butterfly coil method to coil for transport and for storing it in a tree. The rope is always ready for action and tangles are rare. See:
Rope Cleaning
With the exception of tar or sap, a thorough washing with water does a good job of removing dirt from your rope. JRB has also used a small amount of mild, unscented, hunter’s laundry soap to do a better job at removing “new rope smell” from a new rope. JRB has used a standard washing machine cycle, but had the same results by simply soaking in a bucket of water for a day, stirred occasionally. The spin cycle on a washing machine will give it a head start in the drying process though. Don’t use a dryer or the sun or an artificial heat source to dry it. Simply drape it over a branch in the shade or inside over a laundry rack or equivalent with adequate space between the strands. Depending on ventilation and humidity, it may take a couple of days to completely dry. Error on the side of giving it plenty of time. If you have pre-tied friction hitches on the rope, consider taking this opportunity to remove them, inspect them and either replace or re-tie them. REI has a good article on the topic: LINK
Ozone
Ozone generators/lockers are a popular tool for scent management by hunters. However, ozone is known to degrade textile fibers, including those which may be present in our rope. In the absence of quantitative data, JRB recommends that it is prudent to avoid subjecting your climbing ropes and cords to ozone. If they smell, wash them as suggested above.
Storage
During hunting season, JRB keeps his rope and hunting clothes in a duffel in his vehicle, with the windows cracked to ensure fresh air circulation. Often, a natural scent source will be added to the bag such as some branches from a scented tree like pine, sassafras or viburnum. (Consider what is indigenous to your area.)
For long term storage, JRB uses a large, antique crate to store them, ensuring that they are completely dry before putting them in storage.
Rope Inspection
See the video. Ropes should be regularly inspected for damage, ideally before each climb. As we thread a rope up into a tree, we can feel the line as it passes through our fingers and detect anomalies that we might not see in a visible inspection simply because we cant look at the rope from both sides at the same time. Sunlight exposes a rope to UV which can affect its strength.
Wet Ropes
This video shows how a rope, cord and hitch combination that works great in dry conditions can slip in wet conditions. Always plan for the worst case scenario. After a rope gets wet, unbundle it and hang it in a warm, dry location with good circulation or a fan, to speed the drying process.
References
This article describes the international standards which apply to Climbing Ropes, including low stretch static ropes: UIAA Rope Standards
Ropes used in Rescue often adhere to the National Fire Protection Agency (NFPA) standards. This cites and summarizes relevant info and standards: NFPA article
EN 564 is the standard which applies to Accessory Cord, but might also show up on some static ropes. EN564 Abstract
https://www.vertical-addiction.com/us/blogs/blog/climbing-rope-specs
https://www.rei.com/learn/expert-advice/ropes.html
https://www.bartlettman.com/blogs/news/using-different-rope-for-different-kinds-of-climbing
https://treeclimbing.com/tree-climbing-ropes
https://www.theclimbingguy.com/ultimate-guide-climbing-ropes/