Thanks for showing us your nice clear photos. So the cm4228 antenna and rotor bent that mast you had on the chimney. Now that you moved everything atop that tall tower I see you left the mast very long above the tower. What insurance do you have that this mast will not bend too? Being higher up there it will be subject to higher winds and think of snow and ice build-up in a winter storm... this could bend that mast again don't you think? I think the problem to start is the cm4228 is a heavy antenna weighing in at 16 pounds... plus the rotor motor weight ... that’s allot of pounds up there.
I would have kept the mast shorter like these guys did:
Open6l, you did some great work there and congratulations again! I agree about the pole length - that's too long for stability unless you used really solid EMT, but EMT's heavy and would affect the entire tower. I don't know how you could safely go up there and slide the CM4228 down so that you can hack saw the remainder off. Also I would mount the rotator inside the tapered end and bolt it into place there to lower the center of gravity up there and prolong the life of the rotator due to lower torque stress.
I bet with the winds we had today it was moving fairly well up there
I have to agree with all that was said and see if you can't lower that mast. My installer used only what he had to from the top of the tower. I watched the movement in those strong gusts and the assembly seemed to be well balanced.
I haven't checked my unit since those high winds, but it may be necessary to run a synchronization on the rotator. I have my unit set for auto-sync, which aligns the antenna position after 50 moves, but man. those were strong winds yesterday.
Also I would mount the rotator inside the tapered end and bolt it into place there to lower the center of gravity up there and prolong the life of the rotator due to lower torque stress.
I notice that in the Owner's guide to the CM 9521A rotator kit, the suggested installation on page two for tower installation is as you suggested, Stampeder. The rotator is mounted inside the top of the tower, under the tapered end.
It also suggests that a mast of 1 1/4" is necessary for true rotation with this unit.
hahahaha - actually she held up really well - no bend and i watched it in the wind - didn't sway as much as I thought it would.... still going strong for those of you wondering... the mast above the rotator is about 4'x1-1/4" and below the rotator it is about 5'x1-1/2".
How on Earth did you manage to get a tower like that for free? Please tell us how! What Internet Company is giving out free towers?
One has to be very lucky. A friend of mine takes these down on occasion from people who want them removed from their property. The gods shone on me one day and it appeared. A little digging, Red-E-Mix truck tire tracks across my 2 acre lawn\field $400 worth of Concrete and up she went. Like I said Lucky