[TowerTalk] Motorizing a TX-472

[Joe Giacobello]

OK, al and Julio.  Thanks for the input.  I have recently reinstalled a 
late vintage LM-470 here and upgraded the tilt winch to a K2550.  Al, 
did you place the three pulleys on the LM-470 in the general location as 
they are in the UST 89?  Are there any drawings available showing this 
kind of setup?  I'd like to take a look.

73 and tnx fer ur help de Joe

Al Williams wrote:

>Be careful not to compare apples to oranges here.
>
>My 15 yr old tilt raising fixture for the UST 89' tower uses three
>pulleys
>for mechanical advantage.  My 3 yr old LM-470 tilt raising fixture uses
>only one pulley for mechanical advantage.
>
>Furthermore, the winch for the UST  was the k2550 (~40:1 gearing)
>versus the LM-470's k1550 (15:1 gearing).
>
>Winching the UST tower is easy but winching the LM-470 was very
>difficult until I replaced the k1550 with a k2550.
>
>Later I modified the LM-470 tilt raising fixture and cabling to use
>three pulleys also and it cranks easily.  I probably expend as much
>energy moving my arm and hand as I do raising the tower?
>
>I have not used the pivot-at-the-top-of-the-tower method of tilting
>the tower (which has no pulley mechanical advantage, relying only
>on the winch and tower balance) because of workmanship issues.
>
>I would be interested in how well that works and why would anyone
>want to motorize it?
>
>k7puc
>
>
>----- Original Message -----
>From: "Julio Peralta" <jperalta at tampabay.rr.com>
>
>
>  
>
>>I have an 89' UST tilt over crank-up. I use a 1/2 DeWalt drill motor
>>    
>>
>that I
>  
>
>>bought from Home Depot for less than $100. The drill has an approx.
>>    
>>
>1HP
>  
>
>>motor and when coupled to the shaft that the hand crank goes on will
>>    
>>
>stand
>  
>
>>up the 89' UST very nicely.
>>
>>Julio, W4HY
>>
>>----- Original Message -----
>>From: "Joe Giacobello" <k2xx at swva.net>
>>    
>>
>>>Has anyone ever motorized the tilt-over winch on an LM-470 or
>>>      
>>>
>similar
>  
>
>>>tower?  If so, I'd be interested in knowing how you did it.  I know
>>>      
>>>
>a
>  
>
>>>friend of mine once fabricated his own tilt tower that was perfectly
>>>balanced around the pivot points so that he could tilt it by just
>>>manually pulling up on the base and pushing it into a horizontal
>>>position.  Maybe counter weighting the LM-470 so it was more
>>>      
>>>
>balanced
>  
>
>>>might allow a motorized winch to do the same thing easily.  Just
>>>      
>>>
>curious
>  
>
>>>what you mechanical gurus have done on this front.
>>>
>>>73, Joe
>>>
>>>      
>>>
>
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>
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