[TowerTalk] Trying to build my own crank-up tower

[Hamad Mannai]

Hello All,

I am trying to build my own 50 ft crank up tower (using 3 sections of 20 ft. each, 5 ft overlaping for the 2nd and 3rd sections). I did all the drawings, measurements and weights which ables this tower to be free standing. Now I am stuck with 2 major issues tobe sorted out :

1- Do I have to use any sort of (sleeve bearings) to avoid friction between the sections while cranking up or down? or can I just make the sections as tight as possible to each other  to avoid free movements?

2- Whats the best way to distribute pullies through the sections to manage the up and down mechanism? 

I know I am asking too much, but I never saw a crank up lattice tower closely. And I have to build it myself because its not availabe here and in case of importing it from US/Europe, it will cost me $2000+ as shipping charges only!! 

Thanks all in advance. 73s.

Hamad Mannai - A71AW