[TowerTalk] rohn 25g questions

[Donald Hofmann]

I installed 30' of Rohn 25G in the early 90's. It is self supporting with 3' of the base in concrete (3x3x3'). I had two Channel Master antennas on it.
 
Now that I am into ham radio, I want to heighten the tower to 50' (actually 47') guy it and put a beam or two on it.
 
Here are my questions:
 
1. Over the years, the tower has started leaning- probably from the shifting of our soil. When I guy it, how much should I try to straighten it? I would guess that it is leaning about 5 degrees, as it is visible with the naked eye.
 
2. I will have to replace the current 25ag top section so as to use a 2" mast. I am looking at the 25ag4 flat top and tb-3 thrust bearing instead of the 25ag2. My reasons being- the flat top has tabs for guys avoiding the need for me to buy a star bracket or other assembly and two, the flat top will be a good place to stand while attaching antennas. Also the bearing makes less work and strain for the rotor. Comments?
 
3. Due to space restrictions I can set the guys 30' from the tower base. They will be attached to 7' of heavy pipe with 3' in the ground in concrete. Is this adequate? I will use two guys per side. 4' high for the guys should help increase the guy angle as well as increase their height to keep things from hitting them.
 
4. I plan on running the coax down the tower to about the 15' level then across the air into the gable end of my shack. I will run a piece of guy wire to support it and then loosely tie the coax and rotor cable to it with cable ties (like a clothes line). It is about a 40' run so I am sure that it will sway some in the wind. Should I use LMR400 or LMR400 flex so that it will not break in the wind? The total run will be about 125', is LMR400 adequate or should I run something better?
 
 
Thanks
 
W5DWH
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