[TowerTalk] (no subject)

[Danny Pease]

I was looking at a linear actuator as it is available pretty cheaply and it
came to mind as I was contemplating a cheap but effective way to drive a
chain system. From that point, my mind wandered to a pinion gear on the
bottom of the mast and a rack gear attached to a linear actuator (think CNC
equipment rather than automotive). There are various gear reduction systems
that would work, but buying then new is pretty pricey, a new linear actuator
with 12 inches of movement can be had for $50. Another alternative is a
garage door opener system to provide the push and pull to a chain or cable.

I do look at McMaster Carr but I try to avoid them as I see so many
different parts that send me off in tangents and pretty soon I forget what I
was doing to begin with :-)

NG9R


Message: 1
Date: Wed, 1 Jun 2016 16:47:30 -0400
From: Jim Miller <jtmiller47 at gmail.com>
To: Patrick Greenlee <patrick_g at windstream.net>
Cc: towertalk at contesting.com
Subject: Re: [TowerTalk] homebrew rotator
Message-ID: <EC94B796-6AF7-4AF6-B07A-AF5F8B68E8E0 at gmail.com>
Content-Type: text/plain;	charset=us-ascii

McMaster has worm stuff

On Jun 1, 2016, at 4:09 PM, Patrick Greenlee <patrick_g at windstream.net>
wrote:

Why a linear actuator since rotary motion is what you want?  I suppose an
electric rack and pinion set from a junk yard donor car could do the deed
but not my first choice.

Patrick        NJ5G