Wire rope for ziplines
Galvanized Aircraft Cable is the best type of cable for a zipline. It is strong and flexible and reasonably priced. The best size for ziplines under 100 feet is between 3/16 inch a 1/4 inch. Increase in diameter as length increases. A 5/16 inch diameter works well for lengths up to 500 feet and reasonable rider weight (under 250 pounds). Aircraft cable is a type of wire rope, made with a spiral of wire strands around a central wire.
Watch out for coated cable (don't get it). Coatings produce more friction and heat. I have personally heard of the plastic coating slitting and peeled off preventing the Trolley from running smoothly.
Using a cable winch will make tensioning so much easier.
Houseables Vinyl Coated Wire Rope, Aircraft Cable, Carbon Steel, 250 Feet, 3/16" OD, 0.149" ID, 7x7 Braided Strands, Plastic Reel, Galvanized Metal, Tension Wires, for Clothes Line
$44.38 ($0.28 / oz)
Houseables Steel Cable, Wire Rope, 500 Feet, 1/16” OD Thickness, 1 Pk, Metal, Silver, Galvanized, Spool, Tension Cables, Coated, For Aircraft, Garage Door, String Suspension, 450 LBS Breaking Strength
d’Alba White Truffle Waterfull Vegan UV Essence Sunscreen, SPF 50+ PA++++, Blue-Light Protection, No-White Cast, No-Stickiness, No- Irritation, Light-weight, Essence-like Texture, Aquaxyl, Chateau Margaux, Anti-aging, Dermatologist-tested, Formulated without 20 harmful Ingredients, K-beauty.
$25.00 ($14.71 / Ounce)