Bim-Bams always a minor 3rd (Sol-Mi) ?

MuseChaser

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Just got a Sessions tambour up and running. VERY low two-tone strike, and it's tuned to a whole step, meaning it sounds "Re-Do," instead of the usual minor 3rd "Sol - Mi" like every other two-tone clock I've ever heard. Is that an intentional tuning of some two-tone clocks and I've just never come across it before (entirely possible.. I'm hardly experienced in this world), or does this clock need retuning to be accurate to its original state?

Referencing another thread... I have NO objection to strangely tuned chimes .. ;)
 

wow

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Muse, it would bother me too. All, I think, are tuned to a minor 3rd. Even cuckoo clocks. You can fix it by carefully grinding the longest rod shorter and raising the pitch 1/2 step. A very little, check, then repeat till it is right.
 

MuseChaser

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Muse, it would bother me too. All, I think, are tuned to a minor 3rd. Even cuckoo clocks. You can fix it by carefully grinding the longest rod shorter and raising the pitch 1/2 step. A very little, check, then repeat till it is right.
Thanks for the reply... but just checking... wouldn't grinding the longest rod until it was a half step higher result in a half step total between the two sounds? I was planning on raising the pitch of the shorter rod a half step... no?
 

wow

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Thanks for the reply... but just checking... wouldn't grinding the longest rod until it was a half step higher result in a half step total between the two sounds? I was planning on raising the pitch of the shorter rod a half step... no?
If you raise the pitch of the short rod, you make the interval wider. You must raise the pitch of the lower/longer rod to achieve a minor third interval.
The video Justin posted is an example of an interval of a fourth. Pretty rare, I think.
If you raise the pitch of the short rod you could produce the fourth interval as in that video.
 
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MuseChaser

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If you raise the pitch of the short rod, you make the interval wider. You must raise the pitch of the lower/longer rod to achieve a minor third interval.
The video Justin posted is an example of an interval of a fourth. Pretty rare, I think.
If you raise the pitch of the short rod you could produce the fourth interval as in that video.
I DO want to make the interval wider. Currently, the rods are a whole step apart...that's two half steps. They should be a minor 3rd apart,which is three half steps...one half step larger than a whole tone. If I raise the pitch of the lower rod, the interval will get even smaller.
 

wow

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I DO want to make the interval wider. Currently, the rods are a whole step apart...that's two half steps. They should be a minor 3rd apart,which is three half steps...one half step larger than a whole tone. If I raise the pitch of the lower rod, the interval will get even smaller.
Sorry. I misunderstood. Did not read well. I thought they were a major third apart. Yes. If the interval is a step apart you must increase the interval 1/2 step. You can do that by grinding the short rod, raising the pitch 1/2 step. A very small amount will do it.
 

wow

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I DO want to make the interval wider. Currently, the rods are a whole step apart...that's two half steps. They should be a minor 3rd apart,which is three half steps...one half step larger than a whole tone. If I raise the pitch of the lower rod, the interval will get even smaller.
Did you get it tuned, Muse?
 

MuseChaser

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Lol..not yet. It's sort of growing on me. Did my first complete teardown, cleaning,and reassembly of a Seth Thomas 89 yesterday. Let's just say that was a far cry from the torsion clocks I've done. Kept me out of trouble all day....and I need to build a spring winder...and learn how to do bushings....and get the minimum tools necessary to do so....that movement is not in good shape on the time train. The strike works fine...even after I put it back together,which was a shock. Tuning this one wilk be on the back burner for a while.
 

chimeclockfan

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Here's a funky bim-bam, from a 1950's Kienzle/Hermle clock:

 

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