[TowerTalk] PST2051D

[Peter Voelpel]

Yes, the PST2051 is far too small.
I have four of them.
On all 4 the worm shafts have been pushed out together with their bearing
during medium storms. 
Antenna size was always less then 1 square meter and wind not stronger then
70km/h!

73
Peter

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
Marcelo Egues
Sent: Mittwoch, 20. November 2013 13:35
To: Vojtech Ritzko
Cc: towertalk at contesting.com
Subject: Re: [TowerTalk] PST2051D

Hi guys...

About the OB4-40... heavy antenna!
If you install an OB4-40, you need at least PST 61 or 71

The 2051 is too small for this beast!!!
This was the recommendation from OB owner, Tom.

73 and good luck!
Marcelo CX2DK


2013/11/20 Vojtech Ritzko <om8aw at yahoo.com>

> HI folks
>
> I need your expertise
>
> I am planning the rotor setup for OB4-40 (coil loaded 40m 4el yagi)
>
> OB4-40 has wind load at 130 km/h = 1.200 N / 1,49 m² / 16,2 feet²/
>
> There will be mast bearings help to minimize vertical load and bending
> moment from an antenna to rotator.
>
> I like to use  The BIG BOY model PST2051 .
>
> PST2051 is rated @ 23.4 sq. ft.  - wind load area (sq. ft.). (2.5m2)
> What is your experience with this rotor ???
>
> VY 73 DX
> Bela OM8AW
>
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