[R-390] Gear train rebuild help needed......

Phil Mills pmills7 at comcast.net
Thu Dec 26 11:14:17 EST 2013


Norm,  I did not take the geneva gear apart.  The gear
train was MC switching normally before I did the rebuild
which I had to do because it was badly out of sync cam
lobe wise.  The rebuild tutorial said nothing about having
to sync or position the geneva gear.

thanks for the reply, Phil

  ----- Original Message ----- 
  From: Norman Ryan 
  To: Phil Mills ; R-390 
  Sent: Thursday, December 26, 2013 9:49 AM
  Subject: Re: [R-390] Gear train rebuild help needed......


  Hi, Phil,

  I wonder if the problem is in the geneva gear.  Might it be missing its ball bearing?

  73 de Norman, KG4SWM






  On Thursday, December 26, 2013 9:41 AM, Phil Mills <pmills7 at comcast.net> wrote:

    I have put my R-390A's gear train back together using the
    tutorial on www.militaryradio.com but have one problem.

    I have everything lined up on megacycle position 7+000
    so that the cam lobes are aligned, the xtal deck is in the
    correct position, and the bandswitch itself is in the correct
    position.  However, something is out of whack in that
    the bandswitch does not rotate in going from megacycle
    position 7 to position 8 as it should.  It seems to be around
    megacycle position 14 that the bandswitch finally rotates.
    What do I need to do to get it back in sync?

    thanks, Phil  W5BVB

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