[Heathkit] 467-1 harmonic drive

Thu, 25 Mar 2004 20:33:34 -0500

  I have a brand new one if anyone is interested.

  Dave, W3ST
  Secretary to the Collins Radio Association
  Publisher of the Collins Journal
  www.collinsra.com
  ----- Original Message -----
  From: "Bwana Bob" <[email protected]>
  To: "Michael Tortorella" <[email protected]>
  Cc: <[email protected]>
  Sent: Tuesday, March 23, 2004 9:17 PM
  Subject: Re: [Heathkit] 467-1 harmonic drive

  > Mike:
  >
  > The Harmonic Drive was used only with the HW-100. It provided a 28:1
  > reduction ratio. The drive consists of 2 parts, a large knob and a small
  > black splined piece. The small piece was pressed onto the end of the VFO
  > capacitor shaft and the knob snapped on over it. I don't believe it was
  > used on any rig but the HW-100. There really is no way to use the knob
  > on a conventional 1/4 inch shaft and of course, you need both parts to
  > make the drive work. The two parts  should be packaged together. Also, a
  > light silicon grease (more like a heavy oil) was used to lubricate the
  > drive.
  >
  > When Heath came out with the HW-101, the Harmonic Drive was replaced by
  > 2 conventional 6:1 planetary drives in series.
  >
  > If you don't need the drives and they are complete, perhaps some of us
  > HW-100 owners could use them as spares.
  >
  > 73,
  >
  > Bob WB2VUF
  >
  > Michael Tortorella wrote:
  > >
  > > Hello all,
  > >
  > > I have in my spares box two pieces 467-1 harmonic drive.  These look
like the large knobs from the SB200 or SB220 but I can't figure out how they
attach to the shaft.  The inner part seems to turn freely so I can't quite
figure how these work, nor do I remember what radio they're from.  Can
someone kindly clear up an old ham's befuddlement?
  > >
  > > aTdHvAaNnKcSe and 73
  > > Mike W2IY
  > >
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