400 Day Clock Suspension Spring Sizes
July 9, 2007 . by BillA company called Horolovar makes suspension springs for 400 day clocks. Various thicknesses are available. If the spring is too thick the clock will gain time, and if too thin it will lose time
Suspension Spring Thickness for Schatz 400 Day and 1000 Day Clocks
Schatz clocks have a model number inside a circle on the back plate (49, 53, 54 or JUM/7). The other numbers on the back of a Schatz clock are the date code (month and year). Here are the suspension spring thicknesses for Schatz 400 day and 1000 day clocks:
- Schatz standard size clock (49 on back plate): .004 inch
- Schatz miniature (53 on back plate): .0023 inch
- Schatz 1000 day clock (54 on back plate): .0024 inch
- Schatz midget 400 day clock (JUM/7 on back plate): .0022 inch
Suspension Spring Thickness for Kundo 400 Day Clocks
- Kundo full sized clock (about 12″ tall): .0032 inch
- Kundo miniature clock (about 9″ tall, including the oval base model): .0023 inch
- Kundo midget (similar to the miniature but the anchor pin has an offset bend and makes contact with the fork slightly behind the back plate): .0022 inch
For other clocks, you will need the Horolovar 400 Day Clock Repair Guide to determine the proper spring thickness. Note: measuring the old spring’s thickness is not a reliable method, as the spring may not be a Horolovar brand spring. The Repair Guide and suspension springs are available from Norkro.com and other clock parts suppliers.
The thicknesses given above are for genuine Horolovar suspension springs, which most clock suppliers sell. You may want to ask to be sure you are getting Horolovar suspension springs.
Hi Bill,
I have a few suspension springs purchased in Germany, however the markings on the covers, reproduced here below are rather confusing; would be helpful if you could shed some light on what they imply, Thanks.
Pendelfeder fur typen
1203 - 1239
Ref: 49-024
2403 - 2439
I am a fresher and would appreciate your guidance,
Thanks!!
Francis
Francis, unfortunately, I have not been able to find any information about these part numbers. Can anyone help us?
I do have an old original suspension unit that is labeled “Ref: 46-016″ and it is for the Schatz miniature 400 day clock (model number 53 in a circle on the back).
Hi Bill,
I wanted to purchase some top and bottom suspension blocks for the 400 day clock but see that each of these is to be had in 3 sizes which becomes pretty expensive. Kindly let me know if any one of these 3 sizes may be used as standard and home into its slot without any problems regardless of the clock in question. If so that would be great. Also a bit of guidance on which size of fork is most commonly used. Thanks! Have a nice day!!
frankmartin
I recommend that you buy “The Horolovar 400 Day clock Repair Guide”, which has drawings of the suspension units for practically all 400 day clocks. From this, you can see which clocks use which blocks and forks. As far as the common sizes go, the Kundo standard uses the large square bottom block, while the Schatz standard uses the large size rectangular bottom block. The Schatz miniature uses a smaller rectangular block. You can adapt various sizes blocks and forks for use in different clocks, but in my professional repair work I prefer to use the original sizes whenever possible.
Need suspension wire for a Kundo battery operated Anniversary clock, do you have or know where I can purchase one.
Please Reply
This place sells them: http://norkro.com/index_files/page0020.htm
Does anyone know of a company that sells the COMPLETE suspension units for Kundo clocks? I already tried to order the part from a company (Shor International) and they took my money and decided to never mail the part. Thought there might be another one out there.
I can supply these units, please see this post for details:
http://clockinfo.com/posts/26
I have “The Horolovar 400 Day clock Repair Guide” but it isn’t helping with this question, so can anyone else help? My question is what suspension wire size should I use for a Badische c.1906 30 day “lunar” clock? I’d really appreciate a lead on this one.
i recently purchased a suspensionn unit for my shatz 49 400 day clock. i now realize i need the unid or bridge or whatever it is the thih suspension hangs from. can anyone help part numbers would be great.suspension came from timesavers. bill
Hi Bill,
Any lead as to where the hand tightened screw on which the top suspension block is suspended might be purchased? This is the one item I have just failied to come across.
thanks,
frankmartin