Used to have one of these set up at a great-aunts, whose 3 acres started at street level, and sloped down to the river-
A groung cable from a powerline, strung from the tree at the top, made it possible to slide down holding a section of pipe to let go over the river....at the lowest point in the cable, depending on one's weight, you would either pull up yer ass and enter the rise fast enough to make it to the river, or yer fat ass would drag the ground 20 yards early, and slow you down enough to eat shit on the bank.....great fun.
"UNREAL is currently one of the world leaders in the design construction and utilisation of extreme zip slides. There is at present no one else doing zip slides on this scale in the world especially as a commercial venture."
"PRONUTRO ZIP 2000 - the longest zip slide in the world. The zip slide is 280 meters high, two kilometers long, reaches a speed of 140 kilometers per hour and guarantees a four minute unadulterated adrenalin rush. ... At times 100m high and at other times only 4.5m above the ground. The cable runs from the top of the 280m high koppie and the other is attached to the top of a mast 2km away. "
Stumble This
- 
Instructables has connections to instructions on how to
A groung cable from a powerline, strung from the tree at the top, made it possible to slide down holding a section of pipe to let go over the river....at the lowest point in the cable, depending on one's weight, you would either pull up yer ass and enter the rise fast enough to make it to the river, or yer fat ass would drag the ground 20 yards early, and slow you down enough to eat shit on the bank.....great fun.
i so wouldn't go a second time, though. the bearing in that thing could be so brittle.
UnReal
http://www.unrealonline.info/
"UNREAL is currently one of the world leaders in the design construction and utilisation of extreme zip slides. There is at present no one else doing zip slides on this scale in the world especially as a commercial venture."
Wildlife Africa
http://www.wildlifeafrica.co.za/sunactiv.html
"PRONUTRO ZIP 2000 - the longest zip slide in the world. The zip slide is 280 meters high, two kilometers long, reaches a speed of 140 kilometers per hour and guarantees a four minute unadulterated adrenalin rush. ... At times 100m high and at other times only 4.5m above the ground. The cable runs from the top of the 280m high koppie and the other is attached to the top of a mast 2km away. "