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Discussion Starter #1
need one that moves both hands and that moves rapidly backwards. ..any ideas of how to achieve this effect?
 

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I think most clock hand gears will move the hands in either direction (CW or CCW). The type of clock will drive what you need to do. If it's an older mechanism, you should be able to remove part of the movement and attach a small gearmotor (~4 RPM or to your taste) to the drive shaft. If it's a newer model with an electric movement, you could attach the motor to the thumbwheel that's used for adjusting the time.
 

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Discussion Starter #3
I think most clock hand gears will move the hands in either direction (CW or CCW). The type of clock will drive what you need to do. If it's an older mechanism, you should be able to remove part of the movement and attach a small gearmotor (~4 RPM or to your taste) to the drive shaft. If it's a newer model with an electric movement, you could attach the motor to the thumbwheel that's used for adjusting the time.
actually I already got it to back a minute a second. . .

https://www.youtube.com/watch?v=CW8jmPclJGg

but I desperately want an effect like this:

https://www.youtube.com/watch?v=lnHhLs9djRw
 

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I did this with a cheapo clock mechanism available at craft stores or thrift stores in used clocks.
You need two things to make it work:
1. a motor that turns the right direction.
2. a drive mech to attach the motor shaft to the time adjustment wheel on the clock mech.

P.S. I wore out the clock mech in a season. Need to make another one.
Pete

here is previous a post:
http://www.halloweenforum.com/halloween-props/126869-grandfather-clock-prop.html?highlight=
 

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Discussion Starter #5
I did this with a cheapo clock mechanism available at craft stores or thrift stores in used clocks.
You need two things to make it work:
1. a motor that turns the right direction.
2. a drive mech to attach the motor shaft to the time adjustment wheel on the clock mech.

P.S. I wore out the clock mech in a season. Need to make another one.
Pete

here is previous a post:
http://www.halloweenforum.com/halloween-props/126869-grandfather-clock-prop.html?highlight=
that's exactly what I need. how did you do that?
 

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I found a small synchronous motor. Then glued a piece of 1/4" air tubing to the thumbscrew (adjusting wheel) on the back of the clock mech.
This fit on the motor shaft.
Mounted the motor and clock mech in the clock face. Pretty simple. The hardest part is getting the motor connected to the clock mech.
Pete
 

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Discussion Starter #7
I found a small synchronous motor. Then glued a piece of 1/4" air tubing to the thumbscrew (adjusting wheel) on the back of the clock mech.
This fit on the motor shaft.
Mounted the motor and clock mech in the clock face. Pretty simple.
Pete
where did you get the clock mechanism?
 

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I think it was from Micheals. Any craft store will carry them.
Look for one that accepts the hands you want and get the hands at the same time. That way they fit.

I need to make a new one for next year seeing mine wore out.
I can take some photos and post when I get around to this repair.
Pete
 

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Discussion Starter #9
I think it was from Micheals. Any craft store will carry them.
Look for one that accepts the hands you want and get the hands at the same time. That way they fit.

I need to make a new one for next year seeing mine wore out.
I can take some photos and post when I get around to this repair.
Pete
oh please do.
 

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Her are some ideas of the parts you might use for this project.
http://www.ebay.com/itm/Robust-Small-AC-Synchronous-Motor-TYC-50-110V-AC-5-6RPM-CW-CCW-Torque-4Kgf-cm-/161554693518?pt=LH_DefaultDomain_0&hash=item259d68fd8e

These motors turn either CW or CCW. When energized they turn one way, then when turned off and then back on, they turn the other way.


In the lower right pic you can see the adjustment wheel. This is where I epoxied the drive (tubing) that connects the motor to the clock.
Pete
 
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