Welcome to the NavList Message Boards.

NavList:

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

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: ? ? ? Re: Backlash
    From: Alexandre Eremenko
    Date: 2005 Nov 21, 15:52 -0500

    Bruce,
    My SNO manual has a drawing of the inside
    of the Trommel, but the drawing is not clear
    enough to figure out what the screw is doing there.
    (I can see that it pushes some excentric, but the
    total assembly is quite misterious to me).
    Its effect is as you say: it becomes harder or easier
    to rotate the drum, but it has no visible effect on
    the lateral shaking of the arm or on the backlash.
    But I did not play too much with it, being afraid
    to make some irreparable damage.
    The screw is so tiny and submerged so deeply
    that I can hardly see it even
    with
    a watchmaker's magnifying glass. So I am afraid to damage its head.
    
    Alex.
    
    On Mon, 21 Nov 2005, Bruce Stark wrote:
    
    > Alex,
    >
    > You asked about that mysterious little screw on the back of the trommel. I
    > don't know what it's for either. Wouldn't it be nice if we could see inside the
    > trommel? When I first got my SNO-T I tried to take the trommel off in order to
    > clean it, but couldn't drive out the little drift pin that positions it on
    > the end of the index arm. Perhaps that was a good thing.
    >
    > I have less riding on my SNO-T than you have on yours, since I have the
    > Tamaya. So I've given that screw a few turns to see what happens. Turning it in
    > makes the adjusting wheel turn too easily, backing it out tightens the wheel. As
    > you can see the screw is set in at an angle, as if it were pushing on one end
    > of a split ring. It doesn't seem unreasonable to suppose that backing this
    > screw out a bit might lessen backlash. But I really don't know what I'm doing.
    >
    > Bruce
    >
    
    
    

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    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:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    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