Zipline Diameter Pulley Friction/ Rolling Resistance

AI Thread Summary
Using 3/8" cable on a 200-foot zipline may not significantly increase speed or reduce noise due to the minimal impact on friction from the smaller surface area. The primary source of noise is likely the pulley bearing rather than the cable itself. Examining the pulley contour can provide insights into contact area differences. Overall, switching to a smaller cable might not yield the expected benefits in ride quality. The focus should be on the pulley system for noise reduction improvements.
fluke70
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My zipline is 200 feet long built with 7/16" Stainless Steel Cable. Would 3/8" cable result in a faster ride with less noise from the trolley due to significantly less surface area for friction?
 
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Look at the contour of your pulley to see exactly what difference in contact area will result.

My initial reaction is to say that this will not make a lot of difference because I suspect that the noise is generated in the pulley bearing, and that would not be affected by changing the cable.
 

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