Amazon Sales Item #1: One Spring & One Spacer
This unit (1 spring, 1 spacer) is an add-on for Item #2 or 5- and 10-spring systems when extra stopping power is needed.
For higher speeds, add springs as required. Example: a 250-lb rider at 7 MPH needs a 7-spring array. Measure speed on the coldest operating day.
Install a 5-spring/6-spacer system (Item #2), then add two Item #1 units to create a 7-spring/8-spacer setup for safer stopping.
On sale for $180 this month (regularly $259). For expanding existing systems only.
TO THE SPRING SYSTEMS BELOW
Amazon Sales Item #2: 5-Spring System (5-Spring & 6-Spacer Array)
This 5-MPH system (5 springs, 6 spacers) is sold with Item #1 and as an add-on to Item #3 (10-spring arrays) for higher-speed braking needs (11–15 MPH).
Example: a 250-lb rider at 7 MPH requires a 7-spring/8-spacer array. Measure speed on the coldest day, install Item #2, and add two Item #1 units for safer stopping.
On sale for $1,195 this month (regularly $1,595). See simple installation video #1 and video #2.
Amazon Sales Item #3: 10-Spring System (10-Spring & 11-Spacer Array)
This 10-MPH system (10 springs, 11 spacers) provides safer stops for 250-lb zipliners.
Example: a 250-lb rider arriving at 10 MPH on the coldest operating day requires a 10-spring/11-spacer array. Use a speed gun to measure 5 or 10 MPH for 250-lb riders.
On sale for $1,895 this month (regularly $2,495)
Use a Speed Gun to capture the arrival speeds of 5 or 10-MPH speed-capturing of 250-lb zipliners.