[TowerTalk] Can motorized crank up's be manually
Jim.thom at telus.net
Mon Apr 12 06:47:23 PDT 2010
From: K7LXC at aol.com
Sent: Monday, April 12, 2010 5:56 AM
To: towertalk at contesting.com ; Jim.thom at telus.net
Subject: Re: [TowerTalk] Can motorized crank up's be manually
In a message dated 4/3/2010 6:34:43 A.M. Pacific Daylight Time, towertalk-request at contesting.com writes:
> We just went through a big wind storm all last night [ thursday night/fri morning]. The commercial AC power flickered and dimmed
a few times. It eventually died for 2 hrs.
> Ok, what happens with the HDX-689... when it's fully extended, and els all broadside to the wind.. and power goes off ??
> Can these things be brought down manually .. safely.... by another method ?? [ hand winch, cordless drill, etc]
I don't think anyone mentioned taking the guard off of the motor V-belt and then removing the belt. Then you can turn the transmission pulley by hand. It's a slow laborious process but coming down is relatively easy - gravity is your friend. Raising it is much harder manually.
## US Tower corp informs me that,
"Sorry my shop manager just got back to me what we can do. You can purchase a crank handle assembly.
Crank handle will turn the pulley on the input shaft attached to the gear box, the UST part number is 15003-0015-0000."
## Both the tower, and the crank handle, and the CM-20 chromolly mast will be here in 2 x weeks. We shall see if
the optional crank handle actually works. This might be the ticket, VS trying to start a gen set at 3-AM in winter, or UPS
power. I'm not interested in raising during a pwr outage, just lowering. I THINK the gearbox shaft comes out the
opposite end of the gearbox.. where the crank handle could be attached. If so, the guard cover, and V-belt would
not have to be removed at all. A cordless drill with correct fitting might also work. I will report back with my
later... Jim VE7RF
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