[TowerTalk] Manually crank down a motorized tower

Robert Harmon k6uj at pacbell.net
Wed Mar 20 20:34:06 EDT 2019


Joe,

Yeah I figured it would take a lot of cranking.  Hope I don’t have to worry about it !


73,
Bob
K6UJ

> On Mar 20, 2019, at 4:54 PM, Joe K2UF <joe at k2uf.com> wrote:
> 
> Bob,
> 
> I have a 72 foot tri-ex tower .  Have never user the motor control for it.
> I have cranked it up and down manually many times.  You are correct it takes
> a lot of cranking.  Once I counted the turns.  It took about 1000 revs to
> lower each section ( also 1000/sect. back up  UGHHH).
> 
> Good luck,
> 
> 73  Joe K2UF   
> 
> 
> -----Original Message-----
> From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
> Robert Harmon
> Sent: Wednesday, March 20, 2019 7:40 PM
> To: towertalk at contesting.com
> Subject: [TowerTalk] Manually crank down a motorized tower
> 
> 
> I have a US Tower HDX589MDPL with the motorized drum.  I was wondering what
> I would do in the event that something failed in the control box and I
> needed to crank it down.
> The gearbox has a worm gear and I believe I could temporarily take off the
> chain and turn the gear box sprocket by hand.  I would have to turn it until
> the cows come home but I think I could crank it down.  Am I correct about
> this ?  Have any of you had to crank down your motorized tower by hand ?
> 
> Bob
> K6UJ
> 
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