SKU: 39131569380

Factor 55 Synthetic Rope Spool

Sale price$15.08 Regular price$16.75
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Description

Factor 55 Synthetic Rope SpoolFactor 55 Synthetic Rope Spool There is a common belief that a synthetic rope eye termination should possess a diameter D d ratio in the 6 8 range. Most synthetic winch ropes come with metal thimbles providing this ratio when new. The trouble is that the metal thimbles eventually yield and collapse onto the retaining pin, thus reducing the D d ratio considerably. Is this so bad? What happens to synthetic rope strength when the D d ratio is reduced?

Factor 55 Synthetic Rope Spool

 

There is a common belief that a synthetic rope eye termination should possess a diameter D/d ratio in the 6-8 range. Most synthetic winch ropes come with metal thimbles providing this ratio when new. The trouble is that the metal thimbles eventually yield and collapse onto the retaining pin, thus reducing the D/d ratio considerably.

Is this so bad? What happens to synthetic rope strength when the D/d ratio is reduced?

Luckily for us off roaders, many technical papers have been written on this by rope manufacturers and cordage experts and corresponding tests have been completed. Even when a single leg rope eye is pulled against a D/d of 1 (3/8 rope eye pulled against a 3/8 pin), the rope still retains almost all of its original strength.

Why is this?
It’s because you have the load of the pin being carried by two legs of the rope, similar to basket loading a synthetic sling. In fact, the testing standard for pull testing synthetic rope single legs is to use a shear pin in the (1.5 – 2) X d.

So what’s the bottom line, and what does this mean to us off roaders?

It means that if your rope retaining pin is smooth, and at least as big as the rope diameter or greater, you can run a soft thimble-less eye on the end of your rope and lose little to no breaking strength. We just released rope spools for synthetic winch rope with a D/d ratio of 2.6 for those who would like to run soft eyes on the Factor 55 products.

GTK


ROPE SPOOL SIZE CHART:

XTV ROPE SPOOL: ProLink XTV

STANDARD SIZE ROPE SPOOL: ProLink, FlatLink, FlatLink E, Bridle, and UltraHook

XXL ROPE SPOOL: ProLink XXL


MADE IN USA

NOTE: If you currently have a metal thimble on the end of your synthetic rope, ROPE SPLICING IS REQUIRED

 

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SKU: 39131569380

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Reading.With.Mama.Kenna
Belleville, US
★★★★★ 5
Adorable and Perfect for Every Occasion! 💕
Size: 9 Toddler, Color: Pink/Orange, Size: 9 Toddler, Color: Pink/Orange
I absolutely love these Mini Melissa Wonderland shoes! They’re so cute and stylish — my little one even wore them for our family photos because they matched perfectly and looked adorable. The ballerina style is classic, and the material is soft and flexible, making them comfortable for toddlers to wear. They’re easy to clean and hold up really well. Definitely one of our favorite pairs — both practical and picture-perfect!
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Reviewed in the United States on November 2, 2025
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zz top fan
Belleville, US
★★★★★ 5
Stylish and well made.
Size: 13 Wide, Color: Brown Crazy Horse
Good fit and well made. I have had good luck with Florsheim.
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Reviewed in the United States on May 21, 2026
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Amazon Customer
Phoenix, US
★★★★★ 5
The Berkley Flex
Size: 7, Color: Cognac Multi
Very nice shoes, very comfortable, very nice leather. When ordering though, they fit a half size smaller than your size, because they are a tight-fitting shoe.
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Reviewed in the United States on October 25, 2025
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Melissa S.
Pawtucket, US
★★★★★ 5
Better quality than most women’s shoes
Size: 7, Color: Black
I’m a woman and bought these for style and comfort after trying on too many others of multiple price points. These fit well and conformed to my feet after a single wear. Men’s clothes and shoes are so often of better quality.
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Reviewed in the United States on January 27, 2026
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Bruce
Cuba, US
★★★★★ 4
Well made shoes.
Size: 11.5, Color: Black
Four stars because of the weight. Too heavy for my complete comfort. Also I have a narrow foot (C width) and these are too wide for me. Heavy socks make them wearable but not as comfortable as I would have liked.
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Reviewed in the United States on December 1, 2025

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