Associated with
Alternators In late 2018 there was a substantial thread on the UK MG
TD/TF BBS about problems that a TD owner, Mort Resnicoff, was having
with a Dynamator obtained from Accuspark. Seems that there
were two installation issues that showed up - one is that his car is
wired as a positive ground system, where that's unusual for
alternators, secondly is that the supplier's wiring diagram does not
show how to wire the car's ammeter into the circuit. The
Dynamator has no need for the car's voltage regulator, it is
internally regulated. It took Mort a good while to come up
with a wiring diagram that should solve the
problems. But, that's when it became obvious that there was a fault
in the Dynamator. It was causing a significant drain on the
battery when connected into the car's electrical system, about 4 amps. Accuspark
acknowledged Mort's test results and very promptly replaced the
Dynamator for Mort. It is now functioning very well with
Mort's wiring shown below. This wiring diagram is for use in the
installation of a Dynamator in a Tcar wired for positive ground and
an ammeter. The relay that is shown in the wiring diagram is
provided by Accuspark for use in positive ground systems. The wiring
diagram is shown with the permission of Mort Resnicoff.
Ttalk.info
Dynamator Wiring
Mort was allowed to keep the faulty Dynamator, rather than ship it back
to the U.K. This was the perfect opportunity for Mort and a fellow
enthusiast, Jim Northrup, to have a look inside of the faulty unit and
see what makes it tick.
Jim Northrup is noted for being knowledgeable about things
of this sort and might be summed up as ..."a Journeyman Steamfitter,
Welder & Welding Engineer. In college, we studied transformers and DC
generators that ruled the welding world, before alternators, power
transistors and inverters entered the picture. Welding generators and
transformers were pretty darn amazing for their time. I even took a
college course on steam engines. Does that date me? I jumped from
nuclear power plants into robots and home computers when they first
became popular almost 4 decades ago. A quarter century ago, I procured
a hydraulics shop and have been playing with heavy equipment, vehicles,
robots and wife's MGs ever since."
Mort and I have been learning much from Jim. For a
look at Jim's discoveries see DynamatorInnards.