Converting to quartz will give a much more reliable clock but if you are going for 100% originality it can be a cool feature. Keeping a battery tender on a car will usually keep it running and the points won't burn. Either that or disconnect the battery when not being used. I like a tender so I don't lose a battery as often from sitting discharged. No surprises there.
The spring is so small I couldn't count the number of winds even with my glasses on and a magnifying lens so I took that close up of it and then zoomed in on it and made little yellow marks at every ten. Slightly less than 100, I get about 98, but count the end loops and it's back to 100. I'm sure I could take the spring and simply bend out the last coil to make the loop and hook it back up again, but I wanted to try making my own.
Chad
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1966 Ford F250 Deluxe Camper Special Ranger Custom Paint - San Jose plant
http://www.ford-trucks.com/forums/12...al-ranger.html
1966 Ford F250 4x4 Red/White 4-speed - San Jose plant
1966 Ford F250 4x4 White 4-speed - San Jose plant
http://www.ford-trucks.com/forums/11...-f250-4x4.html
1971 Trans Am White/Blue 4-speed limited options - Norwood plant
http://forums.maxperformanceinc.com/...d.php?t=757496