Our Centurion has later gun control system (unfortunately)

[Malcolm Towrie]

Thank you, Mike. I noticed that warning in the Centurion Armament Manual. It's a really interesting read (if you're a Cent geek) and one explanation of this problem on neglected Cents is random people have twiddled the Traverse and Elevation stabilizer trimmer knobs on the gunners panel. These were used to correct drift to left and right or up and down as the old vacuum tube technology warmed up (or just drifted) from the position selected by the gunner. So when an unsuspecting restorer switched from Hand mode to Stabilize mode, the traverse and elevation gearbox motors would drive the gun to an unexpected position, to the consternation of people in the vicinity.

This manual also tells me powered elevation only came in because gyro stabilization required it, for obvious reasons. Powered elevation only works in the stabilize mode. So I read from that, rather surprisingly, manual elevation was the norm prior to the introduction of the stabilizing capability.

Interestingly, the manual also says there is an Emergency traverse control switch. When selected, it reverts back to straightforward power traverse and manual elevation. I need to check that out. After all, the crowd just wants to look down the muzzle of the gun as we drive past them, especially if we are firing t-shirts.

Malcolm