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I ended up ordering a pair of these rotator/thrust bearing platforms. They should do the trick. Now to decide if the 11 gauge galvanized mast pipe I am using right now will be strong enough for the added weight of the 7 pound rotator and 20 pound beam. The mast is currently comprised of three 11 foot sections and there is a four foot long interior support sleeve at each of the two junctions. I may end up using the 10 gauge variant with interior sleeves at the junctions just for an added safety margin. In either case the mast will be secured by four to six guy wires and attached to the house by two standoff brackets like it is now. I also want to use a tilting base plate like this one but hopefully I can buy one in the USA instead of having to pay overseas shipping. Or maybe I'll borrow a friend's MIG welder and see what I can create.

The rotator will be mounted about 7 feet from the top of the 33 foot tall mast and the thrust bearing will be close to the top. This should lower the center of gravity. My plan is to mount the M104C horizontally and the V58 above it using a . Their combined wind load is between the rotator's mast-mounted and tower-mounted maximum wind load values and the configuration I am trying to use is closer to the latter than the former. I'll also figure out where to mount a few pulleys to help raise/lower it and gain some mechanical advantage.

At least that's my new plan but to paraphrase Mike Tyson... everyone has a plan until they get punched in the face.

<blockquote data-quote="TimmyTheTorch" data-source="post: 814238" data-attributes="member: 64271">I ended up ordering a pair of these <a href="https://www.dxengineering.com/parts/WMO-25031" target="_blank">rotator/thrust bearing platforms</a>. They should do the trick. Now to decide if the 11 gauge <a href="https://www.menards.com/main/building-materials/fencing/chain-link-fencing/1-7-8-galvanized-wt-40-chain-link-fence-line-post/9370011000/p-1545204742004-c-5742.htm" target="_blank">galvanized mast pipe I am using right now</a> will be strong enough for the added weight of the 7 pound rotator and 20 pound beam. The mast is currently comprised of three 11 foot sections and there is a four foot long interior support sleeve at each of the two junctions. I may end up using the <a href="https://www.menards.com/main/building-materials/fencing/chain-link-fencing/2-3-8-galvanized-wt-40-chain-link-fence-terminal-post/9475011000/p-1545204741846-c-5742.htm" target="_blank">10 gauge variant</a> with interior sleeves at the junctions just for an added safety margin. In either case the mast will be secured by four to six guy wires and attached to the house by two standoff brackets like it is now. I also want to use a <a href="https://www.barenco.co.uk/mast-support-hardware/pivot-tilt-over-supports/be202-base-tilt-support-with-lock.html" target="_blank">tilting base plate like this one</a> but hopefully I can buy one in the USA instead of having to pay overseas shipping. Or maybe I&#039;ll borrow a friend&#039;s MIG welder and see what I can create.The rotator will be mounted about 7 feet from the top of the 33 foot tall mast and the thrust bearing will be close to the top. This should lower the center of gravity. My plan is to mount the M104C horizontally and the V58 above it using a . Their combined wind load is between the rotator&#039;s mast-mounted and tower-mounted maximum wind load values and the configuration I am trying to use is closer to the latter than the former. I&#039;ll also figure out where to mount a few pulleys to help raise/lower it and gain some mechanical advantage.At least that&#039;s my new plan but to paraphrase Mike Tyson... everyone has a plan until they get punched in the face.</blockquote>

[QUOTE="TimmyTheTorch, post: 814238, member: 64271"] I ended up ordering a pair of these [URL='https://www.dxengineering.com/parts/WMO-25031']rotator/thrust bearing platforms[/URL]. They should do the trick. Now to decide if the 11 gauge [URL='https://www.menards.com/main/building-materials/fencing/chain-link-fencing/1-7-8-galvanized-wt-40-chain-link-fence-line-post/9370011000/p-1545204742004-c-5742.htm']galvanized mast pipe I am using right now[/URL] will be strong enough for the added weight of the 7 pound rotator and 20 pound beam. The mast is currently comprised of three 11 foot sections and there is a four foot long interior support sleeve at each of the two junctions. I may end up using the [URL='https://www.menards.com/main/building-materials/fencing/chain-link-fencing/2-3-8-galvanized-wt-40-chain-link-fence-terminal-post/9475011000/p-1545204741846-c-5742.htm']10 gauge variant[/URL] with interior sleeves at the junctions just for an added safety margin. In either case the mast will be secured by four to six guy wires and attached to the house by two standoff brackets like it is now. I also want to use a [URL='https://www.barenco.co.uk/mast-support-hardware/pivot-tilt-over-supports/be202-base-tilt-support-with-lock.html']tilting base plate like this one[/URL] but hopefully I can buy one in the USA instead of having to pay overseas shipping. Or maybe I'll borrow a friend's MIG welder and see what I can create. The rotator will be mounted about 7 feet from the top of the 33 foot tall mast and the thrust bearing will be close to the top. This should lower the center of gravity. My plan is to mount the M104C horizontally and the V58 above it using a . Their combined wind load is between the rotator's mast-mounted and tower-mounted maximum wind load values and the configuration I am trying to use is closer to the latter than the former. I'll also figure out where to mount a few pulleys to help raise/lower it and gain some mechanical advantage. At least that's my new plan but to paraphrase Mike Tyson... everyone has a plan until they get punched in the face. [/QUOTE]

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