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- Thu Mar 23, 2017 4:20 pm
- Forum: Technical Tips, Questions & Discussions (Computers & Internet)
- Topic: Another Mechanical Engineering Question re: free-stand antenna mast
- Replies: 2
- Views: 6974
Re: Another Mechanical Engineering Question re: free-stand antenna mast
I've never worked with aluminum on that scale, but I've worked a lot with steel tubing. You'd be surprised how limber a 24" joint is when the walls are that thin. If you went with steel you would definitely have to go to at leas 1/4" wall and then you would have about 700 lbs of weight to deal with. Friction is also going to be tough to overcome on a 22 foot slide. I noticed on your link they had some kind of polymer in between the joints. It is probably silicone based to reduce friction.