I need a couple of thrust bearings . One at the top of a Rohn 45 and one at the accessory plate above the TX-2 to allow
rotor removal without having to lift the mast . A couple of hundred pounds of downthrust at most. I can't see buying $360 dollars worth of TB-3 s. Has anyone had any sucess homebrewing ? I'm thinking thick teflon or nylon slippery surface between a couple of 12 inch diameter steel plates ..... no lube or ball bearings to rust. Any suggestions ?
Why would anyone use two thrust bearings? Seems to me that is just asking for binding and stress problems on the rotor.
The bottom of the mast should be guided only by the rotor. Otherwise the slightest misalignment will bind things up.
A slip system at the top is fine. I've used PVC, Nylon, and Teflon over the years.
Install a muffler clamp up there, and you can use it to prevent the mast from dropping if the rotor is removed.