NavList:

   

Reply

Thanks for the instructions Giuseppe,

Just a few clarifications please:

I Intend to take the bubble mechanism out of the sextant's left half frame
by unscrewing the 3 holding screws. It seems that it will be easier to work
this way. Is that how you done it, or is there any advantage in doing it
with the bubble mechanism attached to the frame?

The sodering point at the top of the cylinder - do you unsolder it, or cut
it off?

I am not sure what you mean by "reverse the sextant". My inclination is to
do the whole operation with the top of the vertical cylinder pointing up? or
do you mean forward to backward? sorry if I sound stupid...

Do you hapen to have that PDF file that Robert Eno generated?

Thanks again

Zvi
----- Original Message -----
From: Giuseppe Menga 
To: 
Sent: 26 February 2004 08:58
Subject: R: Refilling Mk IXA Bubble Sextant


I did the job for myself.
These are the steps I followed:
1) make sure the chamber is dry.
2) open the soldering point and with a syringe fill on the hexane.
3) the quantity is not critical (I filled up completely), however if you
leave the
    hole open it will shortly evaporate a little bit.
4) loading and unloading the diafram fill the visible chamber with liquid.
5) then, reverse the sextant and load the diafram, just a little - the
bobble will appear
6) if the bubble is too big in the right position tilt the sextant so that
the bubble         finish on the border at hour 10 (in the view your
left-up) - you see a small dent     in the border  of the     chamber and
release the diafram the bubble will             slowly disappear.
7) if the bubble size is ok release the diafram with the bubble away from
the dent     on the border
8) when every thing is ok resold the hole.
Giuseppe

   

Reply