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The shaft Using the threads must go from the dial/experience on the clock from the again on the front. It has to be extended plenty of for a small hex nut to screw onto it. It may’t be way too prolonged or even the hands will not move the right way.

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Obviously, When you are particular within your abilities and possess a group of mains electrical clocks, it may well be worthy of your although.

The motor gets Substantially of its energy within the much better than normal magnets inside the rotor.  Under, you can begin to see the terminal housing over the back again on the motor Bakelite moulding.

1.56W This looks like it should be fantastic with around 800 turns, and Even though a suitable check should have been run using the tactic described for your Telechron motor, I did not.  This motor is sufficiently distinctive through the past two that assumptions should be avoided, but I've been undertaking things like this for a few years, so elected to just rewind the coil utilizing the 'educated guess' process.

It is really value pointing out the resistance will cause a voltage drop in the winding, and this results in virtually all the heating outcome.  It does something else as well - it lowers the usable voltage from the coil.  Though a measurement shows that there is 16V placed on the coil, Virtually 3.

  It can be now Completely ready for reassembly and further tests.  The magnetic circuit is quite crude, and as compared to a much earlier Warren Telechron motor that I have, this a person was designed at a time when Expense was vital.

18W.  Heat dissipation remains to be less than PROENC the first coil, so all prerequisites have already been happy.  Extended-phrase ability dissipation of the new coil was also analyzed, utilizing the 16V AC plug-pack offer shown earlier mentioned.  Right after numerous times continuous running the motor assembly remained hardly heat, although the calculated voltage was 18V AC - This really is flawlessly usual.

The largest trouble with these clocks is always that most of them are about forty decades previous, plus some may be approximately eighty a long time previous.  Consequently their electrical insulation is almost undoubtedly exactly the same age ... this isn't a very good factor.

The HD pendulum generate is often mounted where ever you prefer in the clock case, as it really is independently mounted in the movement

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  The more mature products - especially These about 50 a long time or so - will not be really robust, and early tries at cable insulation were being fewer than inspiring.  It can be by no means unusual to find the aged versatile insulation actually slipping off wires, notably if it's been even a little heat for all These years.

16V × fifty four = 865 turns As prior to, there isn't a trouble utilizing a several roughly turns that theoretically important, And that i come about to are aware that seven hundred turns of 0.315mm wire will suit in the motor I used to be testing.  Even though you are able to simply wind on one,000 turns (or as lots of as will in good shape) and it will probably be fine, I recommend which the test be done anyway, as you will learn more about what is going on on, and chances are you'll realize that you'll need substantially more or less turns for a few motors (particularly if appreciably more substantial or smaller than regular).