223 Mastrant - Guy ropes
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Guy ropes

Why replace steel guywires?

Steel guying wires are still very common, however they are heavy, difficult to work with and their strength deteriorates with time due to corrosion and general ageing. 

Their electrical conductivity is an undesirable feature as this interacts with the antennas and deteriorates their radiation pattern.

Thanks to the recent developments of materials, both amateur and professional users are changing over to non-conductive guys and ropes and will never go back to using the steel wires once the benefits are fully appreciated. The non-conductive synthetic fibres have all the necessary qualities: high strength, negligible elongation but with good flexibility, long life, low wet-ability, minimum bending radius giving the ability to tie knots, excellent UV radiation resistance, weather durability and resistance to acids and alkali.

MASTRANT® optimized lines are made from proven modern materials such as Polyester (Mastrant P), Dyneema® (Mastrant-M, Mastrant-D and D-F2) and Vectran®. The range covers products for a variety of applications, from thin support lines used for tying wire antennas and beams, to guys for supporting small and portable masts and vertical antennas, to anchoring ropes for high antenna towers tens of metres high. The product line is supplemented by a wide range of stainless steel accessories.

The development, testing and quality control of all these products ensures a superior product delivering long life. They are subject to continuous verifying in real conditions in co-operation with many users.

"Is Mastrant® made from Kevlar?"

People are used to using Kevlar for “high strength ropes with lower elongation". No matter what material the rope is made of. Kevlar (or Technora, Twaron, etc.) are brand names for aramid fibres. Those fibres are susceptible to UV degradation so they are always protected with extruded outer protective jackets - for example Phillystran® HPTG-I.  

However, there is another material for ropes for mast guying - Ultra-High Molecular Weight Polyethylene (UHMwPE); trade names are Dyneem® or Spectra®. It has excellent UV resistance, high knot strength and low specific gravity. Mastrant-M ropes using new Dyneema® Max Technology (by DSM) maximizes the scope of the world’s strongest fiber. Mastrant® is pioneering the use of high performance synthetic rope in permanently loaded applications. Designed specifically for mooring production facilities in deep waters, DSM’s new ‘ultra high strength at low weight’ Dyneema® DM20 fiber delivers unrivalled rope strength, stiffness, durability and longevity.

Specification of the products 

Explanations of terms in columns can be found below the table. In case of any questions feel free to contact us via e-mail at info [at] mastrant.com.

ProductDiameterStrengthSWLElong.WeightPrice EUR (inc. VAT)Online shop
mminchdaN, ~kg%g/mreel 100m (330ft)reel 31m (102ft)1m (3.3ft)
Mastrant-P

2 3/32 100 30 2.4 2 15 - 0.21
3 1/8 200 60 2.4 5 21 8 0.29
3.5 9/64 300 90 2.4 11 28 11 0.39
4 5/32 440 130 2.4 15 34 13 0.44
5 3/16 540 160 2.4 20 48 - 0.62
6 1/4 850 255 2.4 33 83 - 1.08
8 5/16 1300 390 2.4 49 102 - 1.22
10 3/8 1900 570 2.4 71 132 - 1.58
12 1/2 2200 660 2.4 95 171 - 2.05
14 9/16 3200 960 2.4 137 230 - 2.76
Mastrant-M

1 2/32 100 30 0.6 1.4 31 - 0.37
2 3/32 250 75 1.0 4 36 13 0.43
3 1/8 390 117 1.0 7 59 21 0.71
4 5/32 900 270 0.8 11 119 - 1.43
5 3/16 1150 345 1.6 21 189 - 2.27
6 1/4 1850 555 0.7 32 238 - 2.86
8 5/16 2600 780 0.9 45 340 - 4.08
10 3/8 3850 1155 0.9 82 580 - 6.96
12 1/2 5500 1650 1.2 101 830 - 9.96
HMPE D-F3

2 3/32 340 102 0.54 2.5 67 - 0.80
3 1/8 880 264 0.54 4.6 86 - 1.03
4 5/32 1500 450 0.54 8.4 122 - 1.46
5 3/16 2200 675 0.54 14.3 183 - 2.20
6 1/4 3100 930 0.54 20 227 - 2.72
8 5/16 5200 1560 0.54 36 398 - 4.78
10 3/8 7750 2325 0.54 46 497 - 5.96
12 1/2 11500 3450 0.54 80 919 - 11.03
Mastrant-D (discontinued)

2 3/32 200 60 1.2 4        
3 1/8 400 120 1.2 7        
4 5/32 800 240 1.2 14        
5 3/16 1150 345 1.2 21        
6 1/4 1800 540 1.2 34        
8 5/16 2600 780 1.2 46        
10 3/8 4000 1200 1.2 57        
12 1/2 6800 2040 1.2 90        
D-F1/D-F2 (discontinued)

4 5/32 1700 510 0.54 9 180   2.16  
5 3/16 2900 870 0.54 16 330   3.96  
6 1/4 3700 1110 0.54 22 470   5.64  
8 5/16 7500 2250 0.54 44 910   10.92  
10 3/8 9900 2970 0.54 75 1490   17.88  
12 1/2 17000 5100 0.54 96 1890   22.68  
14 9/16 24000 7200 0.54 135 2600   31.20  
16 5/8 28000 8400 0.54 153 3000   36.00  

Strength = breaking strength of the rope in ideal circumstances
SWL = Safe working load. Recommended 30 % of the strength
1 daN = 10 N, about 1 kg
Elongation (stretch) = relative change of the length measured between "pre-tension" (10% of breaking strength) and "working tension" (30% of breaking strength)
Mastrant are braided ropes with twisted cores. All have cover from Polyester
Dyneema® is brand of DSM for Ultra-High Molecular Weight Polyethylene
Mastrant-M ropes use new Dyneema® Max Technology fibres DM20
We supply any length of the rope, the reels are discounted. Standard assortments are reels with 100m and 200m, several types also in 31m and 500m.

 

Description of rope product lines

Mastrant-P (incl. color variants Mastrant-C and Mastrant-R)

MASTRANT-P is guyrope optimized for guying with respect to maximized "performance/price" ratio. This excellent rope offers very good strength, low elongation, high UV and humidity resistance. It has low weight, great abrasion resistance, great durability and is nonconductive (no effect whatsoever on your antenna). Moreover, in contrast to ropes made from aramid fibres (Kevlar, Vectran, Technora, Twaron), it has knot strength about 60 %.

  • Construction: Braided rope with twisted cores
  • Core: Polyester, parallel-arranged twisted cores
  • Cover: Polyester 12 or 16 (depending on the diameter)
  • Safe temperature: -110 °C (-166 °F) to 120 °C (248 °F)

Mastrant-M

MASTRANT-M is the choice for those who require a thinner rope with high performance at an affordable price. Very high strength, negligible elongation, very low weight, and great abrasion resistance - are all attributes that make this rope a perfect for guying. It is a highly durable rope with an outstanding performance-to-price ratio. Of course is nonconductive (no effect whatsoever on your antenna).

MASTRANT-M ropes using new Dyneema® Max Technology (by DSM) maximizes the scope of the world’s strongest fiber. Mastrant® is pioneering the use of high performance synthetic rope in permanently loaded applications. Designed specifically for mooring production facilities in deep waters, DSM’s new ‘ultra high strength at low weight’ Dyneema® DM20 fiber delivers unrivalled rope strength, stiffness, durability and longevity.

Laboratory tests demonstrate that ropes made from DM20 fiber retain the property characteristics of Dyneema®, even under long-term high tensions. Critical behavioral qualities, such as high static strength and stiffness, exceptional abrasion, fatigue and creep resistance enable a smaller, lighter rope to deliver improved performance and operational benefits. Dyneema® Max Technology performs significantly better than SK78 on creep and thus is another step change versus all other HMPE (high-modulus polyethylene). At the same time it keeps the good properties of Dyneema® fiber, which are appreciated by many users. The breakthrough product now offers all the benefits of ropes made with Dyneema® also to the markets of permanently loaded applications like guying of towers, masts and antennas.

  • Construction: Double braided rope
  • Core: 100% Dyneema DM20, braided
  • Inner cover: Polyester staple (only on ropes with diameters from 6 mm and up)
  • Outer cover: Polyester 12, 16, 24 or 40 (depending on the diameter)
  • Safe temperature: -110 °C (-166 °F) to 90 °C (194 °F)

HMPE ropes D-F3

High Modulus PolyEthylene rope is one of the strongest, most durable and innovative ropes on the market today. The rope is made of high-modulus polyethylene. The HMPE ropes are impregnated with durable coating to reduce abrasion and extend the service life. The extraordinary features and extreme strenght of HMPE ropes is a reason for using it as frequent substitute to steel wire/steel ropes. The HMPE ropes go through a special heat and UV resistance treatment. They have an extremely low friction coefficient and highly reduce an operation costs. Additionally, they offer much safer handling solution compared to a standard steel ropes.
The rope surface is furnished with a special protective finish which endows the rope with unusual abrasion resistance and stability even when exposed to UV radiation. Considering its extraordinary properties, the rope is the choice for the extreme projects.

  • Construction: 12-strand braided heat set rope
  • Material: 100% HMPE superior (Nexsteel), special surface finish
  • Safe temperature: -110 °C (-166 °F) to 90 °C (194 °F)

Mastrant-D (discontinued)

  • Construction: Double braided rope
  • Core: 100% Dyneema SK75, braided
  • Inner cover: Polyester staple (only on ropes with diameters from 6 mm and up)
  • Outer cover: Polyester 12, 16, 24 or 40 (depending on the diam.)
  • Safe temperature: -110 °C (-166 °F) to 90 °C (194 °F)

 

Comparison of Mastrant ropes features

strength dia

 

weight dia

 

strength weight

 

price of strength

 

Our direct competitor: hamrope

News

  • Hamfests in 2018 3. 12. 2018

    In November we were on the last show in this year. Our team visited 21 shows in USA, England, Germany, Italy, Spain, Switzerland, Belgium, Portugal and in the Czech Republic. It is the most hamfests in the history that Mastrant has attended. We were very pleased to meet you and hope to see you again in the future!

     
  • Camouflage ropes 2. 8. 2018

    We started production of "Camouflage look" of two sizes of Mastrant-P – called Mastrant-C. It is targeted for customers who need "invisible" guying in specific environment. The main color is tan with brown “dots”. They are available in sizes "3+" (3.5 mm, 9/64") and "6" (6.2 mm, 1/4"). 

     
  • New size of "P" rope: 3.5mm (9/64") 30. 7. 2018

    We started production of new size of rope Mastrant-P which fills the gap between "size 3" (diameter 2.6 mm) and "size 4" (diameter 4.4 mm). It is "size 3+" and has diameter 3.5 mm (9/64"). Breaking strength is 300 daN (about 300 kg or 660 lb.).  
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