[Milsurplus] ART-13 dynamotor woes

[Meir WF2U]

Thanks for all the input from those who replied.

 

In the meantime I dug out the manual with the detailed exploded drawing of
the Eicor dynamotor and as I can see it, I can do the disassembly down to
getting to the field coils out of the dyno body for inspection and hopefully
repair.. It's easier (at least in the drawing) to do than I initially
thought. I made a mistake when I mentioned 2 series windings. There are both
series and shunt coils, and as Robert mentioned, the schematic shows 4 shunt
and 2 series windings.

 

Again, the dynamotor in question was most likely never used before, there is
no corrosion of any kind visible, and at least as far as I could tap and
poke around the connections, nothing was loose. 

I always inspect dynamotors after I get them, before I apply power anyway.

 

The DY-17A/ART-13 is much nicer to work on than the DY-17/ART-13, which has
a lot of discrete components in the base, with many solder joints.  The A
model has all canned PI or L configuration L/C filters, and all relays are
of the  enclosed type, everything is connected with screw  terminals - so
disassembly is easy and not messy. All the connections within the dyno are
also with screw terminals. 

 

To those who don't like dyno noise, I don't mind. The noise is really not
objectionable even from these big dynamotors. I have them on the concrete
floor on a thick rubber mat. A dynamotor with good bearings, properly
lubricated is usually not very loud (T-195/GRC-19 is an exception.).

 

73, Meir WF2U

Landrum, SC