[TowerTalk] Crankup Tubular Tower Info

[Dino Darling]

I have just picked up a US Tower MA-550.  In order to transport it, I disassembled it down to the last nut and bolt.  The way these things are built are VERY easy!  The construction done by US Tower is fantastic and you would be hard pressed to build one for less money than buying one ready to go.  They are galvanized IN and OUT!

Since I'm in a unique situation here as mine is completely disassembled, I will take a lot of pictures for you and provide you with dimensions.  If someone wants to host the pictures on a website, let me know.

There is something inside the top square piece that is slapping around.  I believe it to be a cable in order to properly space the 2" mast that extends into this top section.  I'm not sure as this section is welded shut on BOTH ends.

I also owned a 3 section Wilson and it was made a little different.

I have the free standing base and the tilt up fixture also

Dino - K6RIX

-----Original Message-----

Hi

I'm looking for info on the Wilson and other tubular crank-ups.

We don't get to see this make of mast here in ZL, but since I have some
lengths of heavy wall steel pipe, I would like to build something like 
the Wilson crank-up.

Can someone tell me what the tower comprises, and how it is assembled?

Are the nesting tubular sections all circular or are some square in
section?

How is rotation of one section within the other prevented - ie  is 
there a keyway or similar.

Thanks de MikeN,    ZL1BNB