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Restoration FAQ's and Image Gallery:

Q: How do I buy a rotor from you?

A: Just visit my online parts store.  I can supply or rebuild almost any Telechron motor part.  I'm happy to accept personal checks (subject to clearing), money orders, major credit cards or Paypal.

Q: Are your rotors new, rebuilt or used?

A: All B series rotors are completely rebuilt.  H rotors are re-lubricated or rebuilt depending on the rotor.  S rotors are available as used/tested or NOS (new old stock) when available.

Q: How long does it take you to rebuild a rotor?

A: Allow 1-2 weeks after receipt for a rebuild but I try to maintain a good supply of rebuilt rotors for quick turnaround.

Q: Do you buy old rotors?

A: Yes, I'm always looking for bulk quantities of old rotors dead or alive.  Email me with what you have. I strive to keep my prices as low as possible and welcome the opportunity to buy bulk lots of Telechron motor parts. I also welcome recycling of your old motor parts after you're happy with your purchase.

Q: I see used and occasionally NOS rotors on Ebay and elsewhere.  Should I buy one?

A: If you do you should still have it rebuilt/restored.  These rotors are decades old and the primitive lubricant is almost always in bad shape. I've even seen NOS rotors that are very noisy and barely run.  Even when I sell NOS B style rotors they get ultrasonically cleaned, lubricated with synthetic lubricant, sealed and bench tested.

Q: Do you repair clocks?

A: No, 100% of my focus is Telechron motors.  If you need a full service clock repair shop please refer to my "favorite clock sites" link.

Q: What's your guarantee?

A: Satisfaction upon receipt or money back and 5 year replacement.

Q: How long does a rebuilt rotor last?

A: The life of a rebuilt rotor depends on the condition of the clock’s movement. I recommend that the clock’s movement be cleaned, lubricated, tested and checked for electrical safety simultaneous with replacing the rotor to ensure maximum life.  A clock in poor mechanical condition can wear out a rotor very quickly. A clock in good condition with a rebuilt rotor should last at least 20-30 years for chiming/striking clocks and much longer for time only clocks.  

Q: Is it hard to replace a rotor?

A: No, Telechron designed the rotor to be a quick and easy field replacement. Make sure when installing an H series rotor that the 3 dimples are flat on the clocks movement and the pinion gear is engaged with the clock.  B rotors should be installed numbering side up for optimum lubrication and longest life.  If a rotor runs CCW then just flip the coil 180 degrees and re-insert the rotor.

Q: Do you just drill and fill these rotors?

A: Every B rotor I sell, (even NOS when I have them), has had the gear train removed from the case and completely disassembled.  The parts are evaulated for wear under a high resolution Leica A60 microscope and any out of tolerance gears and/or bushings are replaced.  Worn bushings are re-bushed with high quality Bergeon Swiss made bronze bushings.  (I never use a hole closing punch!!) The rotors are ultrasonically cleaned, lubricated with modern synthetic lubricant and sealed.  They are bench tested for proper torque, low noise and accuracy.  

Proper rotor restoration involves adherence to tolerances <.001. This requires precision tooling, custom jigs and fixtures and the finest in optics and restoration parts.

H rotors are either rebuilt or re-lubricated via pressure injection methods.  They're tested for torque, low noise and accuracy.

S rotors are sold as used/tested/guaranteed or NOS.

Q: Where can I find other Telechron parts or parts for other electric clocks?

A: There’s a “parts wanted” thread at both NAWCC.org and Telechron.net.  There’s also limited selection at Timesavers.com and Merrits.com.  And there’s always Ebay.

Q: Will a Telechron Motor work in other countries power grid systems (ex: 240VAC, 50Hz)?

A:  The vast majority of Telechron motors were designed to operate within the US power grid standards of 120VAC and 60 Hz.  The Telechron coil must be matched to the voltage supplying it. (usually 120VAC but they also came in 24VAC for Nutone low voltage doorbell systems and 240 VAC for non US power grids).

The Telechron rotor does not care what the coil's voltage is.  It's the rotor's gear train design that performs correct timekeeping at power grid frequencies other then 60 Hz. The rotor will be stamped with the frequency in cycles. (ex: 60 C).  Telechron did produce rotors for other frequencies such as 25 and 50 hz but they are very scarce.

If you need a 50Hz rotor please contact me.  They're scarce but sometimes I come across them. I can also rebuild a 50Hz rotor as long as the gears unique to 50Hz are not worn out.

Ken's Clock Clinic can provide an very affordable Frequency-Precise Power Inverter for Clocks and Timing Devices.  Frequency conversion devices have typically been very expensive but Ken's affordable Model 1930 allows you to select between 50 and 60 Hz and options for 115VAC and 230VAC operation.:


Restoration Image Gallery:

High power magnification is essential when evaluating the condition of internal Telechron rotor parts. Abnormal wear patterns and defects don't become apparent until magnification approaches >10X.

Every rebuilt rotor undergoes testing for Torque, Accuracy and Noise. Analyzing torque is an essential step in the rebuild process.