Electric Pendulum Movements

[jeff_wisnia]

I've had a schoolhouse style pendulum wall clock for about 30 years.

It's powered by a single C battery which runs a tiny motor to wind up
the clock spring when it runs down. The clocks rate is controlled by the
pendulum length and the movement is similar to any spring driven clock.

The motor is wide open electrically and I don't think it's worth
screwing around trying to find a replacement for it.

I'd like to replace the defective movement with one of the pendulum
movements sold by Klockit, maybe this one:

http://www.klockit.com/products/dept-380__sku-bbbjj.htm

The words "breakaway pendulum rod" lead me to believe I can shorten the
16 inch pendulum rod by a few inches to fit it into the case space
without affecting the clock's rate.

I've emailed Klockit about that, but so far no answer.

Can someone confirm that the pendulum rod length an that kind of quartz
movement has nothing to do with the clock's rate? I'd like to find out
before I order one.

Thanks guys,

Jeff

[jeff_wisnia]

The link in my post to the Klockit product I'm considering should read:

http://www.klockit.com/products/dept-380__sku-bbbjj.html

(I clipped the "l" off the ".html" in my original post.)

Jeff

[d530]

Post by jeff_wisnia
Can someone confirm that the pendulum rod length an that kind of quartz
movement has nothing to do with the clock's rate? I'd like to find out
before I order one.

Pendulum in this type of movements has no influence on clock accuracy.

[Jeff Wisnia]

Post by jeff_wisnia
I've had a schoolhouse style pendulum wall clock for about 30 years.
It's powered by a single C battery which runs a tiny motor to wind up
the clock spring when it runs down. The clocks rate is controlled by the
pendulum length and the movement is similar to any spring driven clock.
The motor is wide open electrically and I don't think it's worth
screwing around trying to find a replacement for it.
I'd like to replace the defective movement with one of the pendulum
http://www.klockit.com/products/dept-380__sku-bbbjj.htm
The words "breakaway pendulum rod" lead me to believe I can shorten the
16 inch pendulum rod by a few inches to fit it into the case space
without affecting the clock's rate.
I've emailed Klockit about that, but so far no answer.
Can someone confirm that the pendulum rod length an that kind of quartz
movement has nothing to do with the clock's rate? I'd like to find out
before I order one.
Thanks guys,
Jeff

I ordered one of the replacement electric pendulum movements which
arrived today and installed it easily in a few minutes.

Seems to work like a charm, all that's missing is the tick-tock sound.

I'm sure it will keep better time that the mechanical movement did, its
pendulum length varied with the ambient room temperature so it sped up
by about three minutes a day in the winter here in Red Sox nation where
we let the room temperature in the room it was in fall during the day
while we were out and after we retired for the night. I found myself
having to adjust the time and the fiddle with the pendulum length
frequently enough to be annoying.

Jeff