Jump to content


Photo

Vixen Polaris RA drive WITH clutch, is there one?

  • Please log in to reply
2 replies to this topic

#1 scout72

scout72

    Apollo

  • *****
  • Posts: 1204
  • Joined: 12 May 2008
  • Loc: SF Bay Area

Posted 22 February 2009 - 03:11 PM

This is the original Vixen/Celestron Polaris mount I am talking about, not the Great Polaris or Super Polaris- just the original one.

I have seen the JMI motor and the original Vixen one and neither has a clutch that I am aware of to allow slow motion adjustment with the motor attached.

Does anyone know of a solution that fits this mounts that has a clutch? Preferably 12v....

Thanks

Brian

#2 TomN

TomN

    Viking 1

  • *****
  • Posts: 716
  • Joined: 14 Jan 2009
  • Loc: Washington State

Posted 22 February 2009 - 07:17 PM

I've got one that may work, PM me.

#3 JimK

JimK

    Skygazer

  • *****
  • Posts: 832
  • Joined: 18 Sep 2005
  • Loc: Albuquerque, NM USA

Posted 23 February 2009 - 06:40 PM

I have the JMI motor on my Vixen Polaris mount. Per JMI, a clutch is built into the motor and the slow motion control can be used with the motor attached.

I have used it in this way - manual operation is stiff but it does work with the motor connected, which is fine for minor adjustments.

When I plan on having an entire viewing session without using the motor, I loosen a screw in the coupling so that the slow motion control works as before and the motor is disconnected. (The RA shaft turns within the coupling and the motor shaft remains stationary.)






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics