I'm using 2550s on LM-470s here too and wasn't aware of the
free-wheeling mode. I'd appreciate hearing the details too.
73, Joe
Al Williams wrote:
> The holes in the k2550 mounting plate do not match the holes in the K1550
> mounting plate. When I replaced a k1550 with a k2550 I had to ream out some
> (I forget how many) of the holes by up to about 3/8 inch. That wasn't a big
> task.
>
> What bad things are true of the Fulton 1550 winch?
>
> I believe that its braking system is similar to the Fulton 2550. I
> replaced the k1550 with the k2550 because the k1550 being used in the
> tiltover portion of LM470 squealed so strongly that it was a wonder that
> neighbors didn't come running to complain. I calculated that because of
> weight and cable angles involved that the winch was being overloaded. This
> occurred when tilting the tower back down using the initial sling setup i.e.
> not changing tower to tilt at the ears at the top of the tilt fixture. The
> k2550 tilts the tower quietly.
>
> What do you mean by "...puff, the Fullton 1550 winch broke."
>
> On an earlier posting I reported that there is a free wheeling mode that the
> Fulton winch can get into. This occurred to me with the k2550 when the
> crank arm started running away as I began tilting the tower from vertical
> down. I grabbed the handle as it was spinning slowly and stopped it. There
> appears to be a spring loaded "cocking" of the clutch that needs to be
> completed before the clutch is engaged. I would appreciate if any
> towertalkers can explain how brake winches work. I know that it is the
> clutch but it seems strange that a little dinky friction can withstand the
> force of the towers pull!
>
> k7puc
>
>
>
> ----- Original Message -----
> From: "KT2Q" <dxdx@optonline.net>
> To: <towertalk@contesting.com>
> Sent: Saturday, March 17, 2007 8:02 AM
> Subject: [TowerTalk] Tower winch failure
>
>
>
>> All:
>>
>> Was cranking my US Tower HDX555 up after last
>> nights ice storm when puff, the Fullton 1550 winch
>> broke.
>>
>> I thought there would have been damage to the
>> tower and antennas, but it came down much slower
>> than I thought it would; guess it was probably due
>> to the mechanical drag of the unwinding winch and
>> caked ice and snow.
>>
>> The only thing I'm worried about now are those
>> parts of the tower that stop the inner sections
>> from slamming into the foundation. It landed in
>> packed ice and snow at the base when it came down.
>>
>> Looks like all the bad things are true about the
>> Fullton 1550 winch; anyone know if the 2550 is a
>> direct bolt-on for the HDX series? Where can I get
>> one?
>>
>> 73 Tony KT2Q
>>
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|