[TowerTalk] Inverted vee mounted above HF Yagi

[K8RI on TT]

On 8/17/2011 4:18 PM, Mike wrote:
> http://www.hamradio.com/detail.cfm?pid=H0-002775
>
> I used a Yaesu Thrust bearing to do what you described.  I fitted it upside
> down and used the four bolts that hold the bearing shells together to fit a
> small plate by which to connect the "inverted V's" to.
Normally mounting a thrust bearing upside down is not a good idea...of 
course when you live in a mild climate that is not such a 
problem...unless you live near the sea. The bearings are designed to 
drain moisture. When upside down they collect it. It a warm climate it 
just evaporates. Up here...he freezes. Close to the ocean with salt it 
corrodes.

73

Roger (K8RI)
>
> It worked for years okay and was cheap and easy.  Only changed the system
> when I got a 70 foot tower and had no need.
>
> See link above for bearing.
>
> -Mike, K6BR
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of Jack White
> Sent: Wednesday, August 17, 2011 12:32 PM
> To: towertalk at contesting.com
> Subject: [TowerTalk] Inverted vee mounted above HF Yagi
>
>
> Hi Guys
>
> I have a standard 60ft Versatower with a Yaesu G-1000 and bearing mounted at
> the top, and just above this I have a Cushcraft A3WS (pic on QRZ). I want to
> extend the stub mast about 20ft above the A3WS to support the centre of a
> 160/80/40 trapped inverted vee. I'm looking for some type of mount that will
> allow me to mount the centre of the inverted vee at the top of the stub mast
> and remain fixed whilst the stub mast rotates. Ideas/advice would be great.
>
>
> 73, Jack G8DX
>
>
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