• 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.

Recent content by Allan Wolff

  1. Allan Wolff

    Cuckoo clock whistle question

    Check out this thread on "How to DIY a wooden whistle" in the Clock Repair Forum.
  2. Allan Wolff

    Recommendations for a timing machine?

    I have used several of the iPhone applications. They work pretty good for pocket watches and vintage watches that tick loudly. On the newer movements, they struggle to pick up the sound and are easily influenced by background noise. I even experimented with several direct contact piezo pickups...
  3. Allan Wolff

    Clockmakers Brass

    Wes, I have had good luck with McMurray Metals. You will need to call them for pricing or to place an order. You will want the CDC353 Brass Sheet. Even with shipping and cut charges, I have found that their prices are lower than anyone else and their service has been great. Allan
  4. Allan Wolff

    Grasshopper clock

    Looking really great Ernie! It is always exhilarating to see a clock run that you have put so much effort into. Congratulations on the quick build. Allan
  5. Allan Wolff

    Need help Calculating Weights for A Mechanical Clock

    Zachary, You can see the entire clock built in this thread: Building a Strasser Regulator Clock The 10 pound weight was required mainly because it runs for 30 days on a single wind and the weight drops 1 inch per day. If the clock was designed to run only 8 days, or the drop was made longer, a...
  6. Allan Wolff

    Need help Calculating Weights for A Mechanical Clock

    Welcome ZacharyII ! As unscientific as it sounds, determining the weight required to operate a clock is often done by starting with a heavy weight, and then reduce the weight until the clock will no longer run, then add 15% to 20% of the weight back. There are just too many variables from...
  7. Allan Wolff

    Tyvek Bellows Tips

    Like Dan, I have found the Tyvek envelope material too stiff. Had pretty good luck with the bellows material from Timesavers.
  8. Allan Wolff

    Gear cutters

    Will, I have made a few cutters but never got good enough at it to be able to make one in 30 minutes or even get the profiles correct. I purchased a few of the single tooth cutters from Merritt's with mixed results. One cutter works great while the second one seems to want to hammer on the...
  9. Allan Wolff

    Help Help finding modern replacement hole end mainspring for old German clock

    These German movements usually have fairly strong mainsprings which is determined mostly by the thickness. Your original thickness measurement of .01525" sounds about right, although I have found some with thicker springs. Width affects the the strength somewhat, but not as much as thickness...
  10. Allan Wolff

    Servicing a Hammond Bichronous Movement

    Tim, Thank you very much for providing the link to the video. It contains a lot of useful information on repairing one of these movements. I've got it book marked along with Ken's presentation on overhauling electric clock motors. Please pass along my thanks to Ken for putting this excellent...
  11. Allan Wolff

    Servicing a Hammond Bichronous Movement

    This is my first time servicing a Hammond Bichronous electric movement. As I have found in previous threads, this one has the usual teeth missing from the fiber start wheel and the power cord is bad. It is also severely gummed up from dirt and dried oil. The backup power mainspring is very...
  12. Allan Wolff

    Seeking info on Hermle K2 & K3 calendar attchts

    I have never seen one of these before. The photo has a Cousins watermark. Perhaps they can provide some instructions. Mark Butterworth also sells Hermle movements and is a member of this forum. Send him a private message and see if he can assist. Good luck, Allan
  13. Allan Wolff

    All plastic 3D printed clock

    Jon, Congratulations!! That is a very cool looking clock and the accuracy is amazing! I would love to see a closeup video of the escapement if possible. Thank you for sharing, Allan
  14. Allan Wolff

    Designing your Own Clock

    Hi Chris, I will take a shot at your questions, although I cannot answer them all. 1: Do most older longcase clocks have a seconds hand. The reason I ask is there are design implications on gear ratios. I suspect they do but :???: I have seen a lot of both. Including a seconds hand is easy on...
  15. Allan Wolff

    Worst Designed Movement?

    #1 - Cuckoo clocks - My wife won't allow me to work on them anymore. She says they make me swear too much. #2 - Balance wheel alarm clocks - Aren't these supposed to be disposable? #3 - Haller "German Time Bomb" 400-day clocks - Big mainspring, plastic parts, no thank you!
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