Monthly Archives: September 2014

Clock Repair Archive – –       QUAIL CUCKOO CLOCKS: Quail cuckoos are quite involved and can be very challenging repair items. Have a test rack set up to run and observe them on. Spend a siginficant amount of … Continue reading →

Clock Repair Archive – –      To calculate the required length for a pendulum you can use this formula:  where Li is the incorrect length, L is the correct length, E is the error in timekeeping, and R is … Continue reading →

Clock Repair Archive – –      mainsprings:The mainspring is the heart of the timekeeping of any spring drive clock. If the mainspring is not oiled properly the clock will not work. The oil that is used is absolutely critical … Continue reading →

Clock Repair Archive – –     New Haven mainsprings:  new haven time and strike: back to top The New Haven time and strike mechanism (standard design ) mainspring measurements : Time: .0175 inches strong by 3/4 inches wide by 96 … Continue reading →

Clock Repair Archive – –    Most barrel caps are friction fit into the barrel. Installing a barrel cap on a mainspring barrel can be a frustrating experience if the cap does not fit snugly. Here is one way to … Continue reading →

Clock Repair Archive – –      popular european (Hermle) mechanism mainspring specs in inches ( LISTED width X strength X length): #10 — .669X .0177 X 58.6 #11 — .669 X .0157 X 47.25 #20 — .669 X .015 … Continue reading →

Clock Repair Archive – –     mainsprings:The mainspring is the heart of the timekeeping of any spring drive clock. If the mainspring is not oiled properly the clock will not work. The oil that is used is absolutely critical … Continue reading →

Clock Repair Archive – –   junghans: The large westminster chime mechanisms made by Junghans in the early 1900’s uses a return spring on the trip lever that is .015 inches in diameter. It is usually made of brass.

Clock Repair Archive – –     This clock is listed mainly for the order of the tubular bells, because if those are ever out of proper sequence it can be a nightmare getting them right.This particular model has seven … Continue reading →

Clock Repair Archive – –     How to drill glass ( flat, single strength ): Please note: I have had many emails from persons having problems drilling glass. I must stress that my experience related here ONLY applies to flat, single strength, non-tempered, … Continue reading →