• Important Executive Director Announcement from the NAWCC

    The NAWCC Board of Directors is pleased to announce that Mr. Rory McEvoy has been named Executive Director of the NAWCC. Rory is an internationally renowned horological scholar and comes to the NAWCC with strong credentials that solidly align with our education, fundraising, and membership growth objectives. He has a postgraduate degree in the conservation and restoration of antique clocks from West Dean College, and throughout his career, he has had the opportunity to handle some of the world’s most important horological artifacts, including longitude timekeepers by Harrison, Kendall, and Mudge.

    Rory formerly worked as Curator of Horology at the Royal Observatory, Greenwich, where his role included day-to-day management of research and digitization projects, writing, public speaking, conservation, convening conferences, exhibition work, and development of acquisition/disposal and collection care policies. In addition, he has worked as a horological specialist at Bonhams in London, where he cataloged and handled many rare timepieces and built important relationships with collectors, buyers, and sellers. Most recently, Rory has used his talents to share his love of horology at the university level by teaching horological theory, history, and the practical repair and making of clocks and watches at Birmingham City University.

    Rory is a British citizen and currently resides in the UK. Pre-COVID-19, Rory and his wife, Kaai, visited HQ in Columbia, Pennsylvania, where they met with staff, spent time in the Museum and Library & Research Center, and toured the area. Rory and Kaai will be relocating to the area as soon as the immigration challenges and travel restrictions due to COVID-19 permit.

    Some of you may already be familiar with Rory as he is also a well-known author and lecturer. His recent publications include the book Harrison Decoded: Towards a Perfect Pendulum Clock, which he edited with Jonathan Betts, and the article “George Graham and the Orrery” in the journal Nuncius.

    Until Rory’s relocation to the United States is complete, he will be working closely with an on-boarding team assembled by the NAWCC Board of Directors to introduce him to the opportunities and challenges before us and to ensure a smooth transition. Rory will be participating in strategic and financial planning immediately, which will allow him to hit the ground running when he arrives in Columbia

    You can read more about Rory McEvoy and this exciting announcement in the upcoming March/April issue of the Watch & Clock Bulletin.

    Please join the entire Board and staff in welcoming Rory to the NAWCC community.

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

MuseChaser

NAWCC Member
Feb 5, 2019
208
44
28
Country
Region
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

NAWCC Member
Jun 24, 2008
4,800
447
83
75
Pineville, La. (central La.)
Country
Region
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

NAWCC Member
Feb 5, 2019
208
44
28
Country
Region
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

NAWCC Member
Jun 24, 2008
4,800
447
83
75
Pineville, La. (central La.)
Country
Region
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.
 
Last edited:

MuseChaser

NAWCC Member
Feb 5, 2019
208
44
28
Country
Region
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

NAWCC Member
Jun 24, 2008
4,800
447
83
75
Pineville, La. (central La.)
Country
Region
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

NAWCC Member
Jun 24, 2008
4,800
447
83
75
Pineville, La. (central La.)
Country
Region
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

NAWCC Member
Feb 5, 2019
208
44
28
Country
Region
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

NAWCC Member
Dec 21, 2006
4,388
350
83
WI
Country
Region
Here's a funky bim-bam, from a 1950's Kienzle/Hermle clock:

 
Know Your NAWCC Forums Rules!
RULES & GUIDELINES

Find member

Staff online

Forum statistics

Threads
163,548
Messages
1,421,191
Members
84,944
Latest member
kdm
Encyclopedia Pages
1,101
Total wiki contributions
2,857
Last edit
Aurora's 15 Ruby Jewel Movements by Greg Frauenhoff

514 Poplar Street
Columbia, PA 17512

Phone: 717-684-8261

Contact the Webmaster for perceived copyright infringement (DMCA Registration Number 1010287).

Copyright © National Association of Watch and Clock Collectors Inc (A 501c3 non-profit corporation). All Rights Reserved.

The NAWCC is dedicated to providing association services, promoting interest in and encouraging the collecting of clocks and watches including disseminating knowledge of the same.