[UK-CONTEST] Mast Winches

[G0JKZ]

 Would say work out what the whole lot weighs, then double the winch
rating... so if your tower weighs in at 1000Kg then get a 2000Kg winch. I
would rather have the safety margin than run the winch to its limits. (Just
like linear amps.....)

George
G0JKZ

> -----Original Message-----
> From: Dave G3RXP [mailto:g3rxp at btinternet.com]
> Sent: 06 February 2012 16:37
> To: uk-contest at contesting.com
> Subject: [UK-CONTEST] Mast Winches
> 
> Hi Guys,
> 
> Im sure one of you can give me some advice on winches for masts.
> 
> I have a 60ft tower (with a 3 ele steppir and an ali scaffold pole
-yardarm)
> used to support 2 ele inverted V wire beam for 40m) which has a winch for
> lower /raise which also works to tilt the mast over.
> 
> I have been using a winch with worm and wheel gearing (40:1 ratio -with 4
> pulley wheels at the base of the mast, so another 4:1 ratio - bit of a
bind but
> easy to wind up.) which has the safety feature of not needing a break so
> when you stop turning the handle the winch just stops.
> 
> Well the worm / wheel gearing has now become distorted as it is 20 years
old
> so I need to buy another winch.
> 
> Im looking for a winch which has worm and wheel gearing (No loud clicking
of
> the break stops) but Im not sure of the loading that is required how do I
> measure that without letting the mast fall over? I can get another winch
that
> has a loading of 250lbs but how good is that -  do I need more? The
greateast
> loading is when the mast is tilted over -  I would think.
> 
> Or I could always buy an electric winch but are they expensive.
> 
> Thanks 73 Dave
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