NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
A-12 sextant question
From: James R. Van Zandt
Date: 2006 Oct 15, 16:40 -0400
From: James R. Van Zandt
Date: 2006 Oct 15, 16:40 -0400
As I have mentioned, I have recently bought an A-12 bubble sextant. I have since refilled the bubble chamber with xylene and made a sun shot. However, I have a question: The sextant came with three plastic drums to record measurements. How do I take off a drum? According to the user manual, it should be simple: "Lift the drum straight off the Sextant. It will be noted that the drum is fitted to a flange which has three studs. Two of these studs are small and long enough to extend through the operating drum. The remaining stud is shorter and larger so that it is impossible to put the drum on in the wrong position" However, I think my sextant has been assembled incorrectly. I've posted a picture here: http://jrv.oddones.org/A-12-drum.jpg. In addition to studs mentioned above, the drum has a slot and the shaft has a key. However, on my sextant, the key and slot are almost 180 degrees out of alignment. The drum cannot be pulled directly out because of the key, and cannot be rotated because of the studs. I can see two possible ways to proceed. The studs have slots, suggesting I might remove them with a screwdriver. I actually tried that, but they didn't budge. The other way would be to remove the "spring lock" from the other end of the shaft. I'm not sure that would accomplish anything - the manual tells me to remove the spring lock only after I "remove the three screws from the countershaft and trigger bracket assembly". However, the drum is covering those three screws. Any suggestions would be appreciated. - Jim Van Zandt --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---