4 hammers, 5 rods?

clarke

Registered User
Oct 25, 2009
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Hermosa Beach, CA
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Hello,

The photo is of the strike and gong hammers of a Junghans W64 mvmt.
There are four on each side, yet there are 5 rods.

Is this for some kind of manufacturing efficiency, with one rod ignored in this mvmt? If so, should the opposing hammers be lined up (and not offset like in the photo) to strike only the relevant rods?

Or is the rear gong hammer positioned to hit two rods?

I'm just curious because the clock sounds fine to me.
thanks.
c.
 

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tom427cid

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Mar 23, 2009
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Hi,
Looks like the back hammers are set to srtike two different rods.
Hope this helps.
tom
 

owen.or

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Aug 26, 2000
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Is this a bim-bam strike? In that case there would be two notes for each number of the hour. That would make sense to me since, if one set of hammers hit four rods and the other hammers hit three of the same and one different, the sound would be slightly different for each stroke making for an especially melodious sound. If it's not a bim-bam, offsetting the hammers on each side would still tend to make for a richer sound assuming the rods are tuned for that purpose. David "owen.or"
 

chimeclockfan

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Dec 21, 2006
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It's 5 rods. The strike hammers are adjusted something like this.

(Yellow hammers = chime, Orange hammers = strike.)

HAC and Odo used this, too.
 

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harold bain

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Nov 4, 2002
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Looks like a Westminster chime with a chorded strike. If it sounds OK, then that is how it should be.:D
 

Jeff Salmon

Registered User
Apr 11, 2002
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In my experience, the hour chime picks up the longest rod to give a deeper hour chord. The Westminster melody is 'tuned' to a particular scale and the longest rod is not 'in play'
 

clarke

Registered User
Oct 25, 2009
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Hermosa Beach, CA
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Thanks Guys,
the diagram from Chimeclock fan makes sense to me. It's a Westminster and the hour strike definitely sounds a deeper tone so the back hammer must be positioned to hit the longest rod.
c.
 

chimeclockfan

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Dec 21, 2006
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