[TowerTalk] Tri-ex LM-470 Motorized Winch

[KJ6Y at aol.com]

Harry,
The LM-470 used a 1/2 HP motor.  Grainger  #6K122.  Had a  small 1-2" sheave 
on the motor and a 11" sheave on the gear box.  The  LM-470 also has a 4:1 
pulley raising system.
The Hygain HG-70 has a 3:1 system. You night get by with the 1/2 HP but  
depending on the load on the tower, it may have a tendency to slow down and  
stall.  Going to a 3/4 or 1 HP motor should solve this problem.  There  were 
several versions of the winch.  Early versions actually had a direct  drive to the 
gearbox.  Then they went to the drive belt with the motor  mounted horizontally 
to the right of the gearbox.  Last versions had the  motor mounted above the 
gearbox on the outside of the mounting plate.
The LM-470 also had a pull down cable.  Hygain did not have a true  pull down 
system.
 
Skip,  KJ6Y
_Communications Service  Co_ (http://members.aol.com/kj6y/skip.html) 
818-887-3569 



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