Part 3 and final of U.S. Army Corp DM-36-D Dynamotor Restoration and test

Yes in this video we go back to the dynamotor and finish up. After opening it up checking and cleaning the motor then finding the power supply has to be adjusted to 28 volts to get at least 220 volts we test it on video and look what we got.

[@skycarl]

Nice job on that Larry. Will be fun seeing it put to work with the radio.

[@LarryDeSilva64]

Thanks Carl Yes it took some clean up work but it works just as good as it was used before and even though it puts out 230 volts DC that is without a load so when it gets hooked to the receiver it will drop a couple volts and should be fine.

[@old64goat]

Is there diodes inside the dynamotor or is it AC output like a generator?

[@LarryDeSilva64]

No diodes in it at all Bill. Does not produce ac it produces DC volts. The coils and magnets spinning around the commutator puts out the voltage and the two capacitors are merely for noise suppression. That's why it is not a typical generator. On a Plane they used Batteries DC in and DC out dynamotor just stepped up the voltage for the B plus in the radios.

[@old64goat]

@@LarryDeSilva64 HUH?...How can you have DC coming out of a coil, it should be AC, it goes againsed all I learned about electricity.
Guess I need to take a course on dynamotors..LOL

[@LarryDeSilva64]

@@old64goat yes Bill its all DC . Think of it as a step up motor just increasing the voltage but there is just DC in no AC goes into this dynamotor at all. It is not an inverter that is totally different.