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how do i make an end post for a zipline strong enough 2 not sag or break?

i have the cable and stuff for a zipline and have made a short one but wana make it longer(more fun) the problem is were i have room for it the is no available trees and im guna have to make the end posts to hold the thing. my problem is how do i make the posts to were the wont sag inward or break? any kind of cheap(not over 20 bucks) ideas that could hold about a 500 hundred pounds(not fat, just safe) and take it

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  • 1 decade ago
    Favorite Answer

    To be safe, you are going to have to spend more money than that... Remember that the force pulling down is equal to the mass of the object (you) multiplied by the distance from the support point... So a support that would hold you on a 40' zipline may not hold you on a 100' zipline...

  • 1 decade ago

    you may have to spend more then 20 bucks...but try telephone poles that should hold and i'm pretty sure thats what they used on "little people big world"

    or you can try railroad ties.

    good luck with the zip line!

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