[TowerTalk] Fw: MDP-750 Pulley alignment

[Bill Aycock]

I have never seen this type of installation before, but it seems obvious to
me that the angle is there for the purpose of allowing the cables to align
with the staggered feed to the large pulley. -- in other words, the
re-threading was done backwards.

Just the engineers perspective.

Bill- W4BSG

At 09:49 AM 11/23/1998 -0500, you wrote: 
>>>>
  

  
A number of weeks ago, I had a cable failure on my UST TX-472. At the
time, I blamed it on lack of attention in changing cables. Further
investigation uncovered unusual wear on the motor pulley. This caused
the cable to be pinched to the point of failure. I found this to be fact after
avoiding a second disaster when the new cable began to shred
and break. Bruce, at UST said that pulley wear is normal, but had never seen 
wear as bad as I had experienced. Steve Morris pointed out that there must be 
some other reason for the failure such as mis-alignment of the pulleys.
  
This weekend, While checking the upper limit switch on the tower, I glanced
down at the motor unit to find a severe mis-alignment of the upper pulley.
It is
welded at a angle when compared to the large pulley on the motor.
  
Anyone owning one of these units should check this carefully. I would be
interested in
hearing if this is a problem with other installations. I posted pictures on
the URL
<http://www.members.global2000.net/~bbond>www.members.global2000.net/~bbond
Click on the hyperlink named "Pulley"
  
The response from UST should be interesting. I will keep you posted...
  
Ben Bond
W2PS

<<<<


-
Bill Aycock   W4BSG
Jackson County, AL
EM64vr
W4BSG is "vanity" this time, but was 
earned by exam in 1954, the first time.


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