[TowerTalk] Prosistel Rotors

[Dino Darling]

I understand the failure rate is rather high with these rotors.  While 
speaking with a professional recently, I was told to stay clear of 
these.  It sounds like M2 has a very good rotor!

>Concerning the discussion on towertalk...
>
>I own 4  Prosistel PST2051 advertised for 2,5m² windload.
>Two of them got the same failure, the worm-bearing was pushed outside!
>That happened at abeout 60-70km/h wind with an antenna of 0,9m² 12m above 
>ground!
>
>So far all control-boxes have failed, some by static, others by electonic 
>failure.
>
>Also the mast clamps were not properly drilled, the holes for the 
>mountingscrews were not aligned
>
>The advertized starting torque of 200Nm I never believe.
>I have one in my Versatower, in foldover-postion a HyGain 5-element 10m 
>yagi could not be turned.

Dino...k6rix at earthlink.net