[Teaa-l] July Meeting is on!
teaaprez at yahoo.com
Wed Jul 16 06:05:41 EDT 2008
Our July meeting is on for this Saturday, July 19 at PA Smith's in Cary at 10am.
On the Agenda:
Troubleshooting a highway capable Scooter
Cook has an R-20 Scooter (http://www.evtamerica.com/r_20.htm) that is
giving him problems. We will be troubleshooting his circuits to try to
find a cause. Those with some
troubling shooting skills are encouraged to bring your Digimeters. Here is a recommendation from the distributor:
for your charging problem, this can be caused by several situations.
Since you say that you have established that the charger is not the
problem then the most probable reason is a loose connection and it
should be traceable to the line between the charger and the batteries.
What this means is that the current goes straight from the charger to
the batteries as such:
AC current to the charger
Charger to the charging plug on the scooter (can be a problem in the charging plug, check for dirt, water or burned area)
plug to the circuit breaker (there is a connector behind the charging
plug and somehow this connector has either come loose or a pin has
broken and a wire is not making contact)
circuit breaker is not a problem as the current to the batteries does
not travel through the breaker (keep the breaker in the OFF position)
wire (red) then goes straight to the plus of battery number one (this
wire might have come loose from the breaker where the wire coming from
the charger meets the red plus wire going to the battery. If this wire
came loose then the current is stopping there.
terminal wires connecting the batteries. Each battery is connected to
the other in series (plus to minus) thereby making all 5, 12V batteries
into a 60V package. If one of the terminals has burned out or has a
loose contact then there is no longer a complete circuit and the
battery charger can not charge. If this is the case, the charger will
not work either, it will not turn on at all and the green light will
turn on as if you had a complete charge.
Crimping/Heat Shrinking Hands On
are proper ways to crimp a wire and improper ways can get you into
trouble. Also heat shrinking a wire/terminal combination can add
strength to a connection. Pete will be providing a demo and hopefully
enough supply to let everyone who attends have a try at crimping and
heat shrinking a connection.
There will be a newby session to try to answer your questions about EVs.
Directions to PA Smiths is on our web site at www.rtpnet.org/teaa.
Hope to see you there
TEAA President 2005
teaaprez at yahoo.com
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