Very interesting discussion on the regulator-rectifier. After my first Ducati
regulator
failed at about 150 hours, I designed some simple installation improvements
in order to increase the reliability of the unit.
I believe the main problem is to dissipate the heat. On the Europa, the
regulator
is bolted to a composite structure which cannot act as a heat sink. So it is
necessary to duct cold outside air to the unit fins. I use SCAT ducting to take
the air from the front of the cowling to a plenum riveted to the Ducati fins.
Another issue is grounding: the unit being bolted through a weak
glassfiber/foam
sandwich structure, there is no way you can compress the ring terminal enough
to make a good ground connection. Now my ground wire is bolted to one of the
regulator fins using a separate bolt which can be torqued properly. See attached
picture.
Then there is the warning light which occasionally was giving false information
while the bus voltage was just right. I have since disconnected the L terminal
and installed a separate low/high voltage monitor (B&C).
The replacement Ducati regulator I installed more than ten years ago has now
close
to 1000 hours. May be because I have been carrying a spare unit since the
original one failed?
Remi Guerner
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