[bhill86]

I can’t help with the tach, though I’m interested to see the responses because mine sticks occasionally around 1800 rpm, but as far as the clock, the second hands should swap easily. They just pull off/press on. You may also find the electromechanical clock movement just needs lubricated. If the contacts are worn, that’s another story. If you’re not worried about originality they do sell a quartz conversion kit for that clock. I picked one up several years ago and it works well enough although I may have a pice of dirt or something in mine because it does stop occasionally. I just haven’t taken the time to pull everything apart again to look at it.

I’d already bought the conversion though when I took my clock apart and found that the mechanism still worked after being lubricated.