Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: Cleaning and protecting my Freiberger
    From: Renee Mattie
    Date: 2004 Aug 31, 20:37 -0400

    Ken Gebhart wrote:
    > Under the heading of not doing anything dumb, I would
    > recommend not doing two things.
    > Do not take the arm out of
    > the frame, or move any screws associated with this area other
    > than removing a cover to apply lubricant.
    > Final assembly is done in the factory with the sextant on a
    > testing machine.
    > Set screws are adjusted to center the pivot exactly during
    > the test.
    Thanks for this warning.  One would think, looking at the
    cover of Bruce Bauer's "The Sextant Handbook", that removing
    the arm from the frame is OK.
    > The other area which I would not disturb is the
    > worm gear, other than to clean and lubricate.  I have always
    > found that to disassemble and re-assemble any kind of gearing
    > invites the prospect of mismatching of teeth or axes which
    > results in high and low spots of tactile feedback, new wear
    > patterns, or other mysterious results that just don't seem right.
    Thanks for this warning, too.  Are you saying that it would be a
    bad idea to remove the drum from the arm for cleaning, or just
    that it would be a bad idea to take apart the innards of the drum?

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site