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JUST A FEW NOTES ON QUICK FIXES
NOTE DO NOT USE THIS ON A INVERTER GEN SET
Flashing Using a 110 volt Source
re-energize a generator it must be fed electricity at the correct voltage
and cycle rate while it is running. This means power must be available from
household power or a borrowed generator. Most generators are 110 VAC 60
cycle, a few are 220 VAC 60 cycle, and some have dual 110 VAC 60 cycle
armatures and windings (which when combined produce 220 VAC). But as all of
them have 110 VAC receptacles, they can be energized in exactly the same
device must be built to connect the power source to the dead generator. Each
end must have 3 wire male plugs, two wires of 12 to 16 gauge about 6 feet
long, and 3 light bulb fixtures are required. The white wire is connected
from the right side (holding it) or left side (looking at face) of the male
plugs. The positive (black) wire must have 3 light bulb fixtures wired in
series, so electricity flows through each light bulb from one end to the
other. This is most easily accomplished by installing 3 porcelain light
fixtures on a board and connecting them in series, but any expedient method
that does not short out the wires may be employed in an emergency. Put 60
watt light bulbs in each fixture.
NOTE USE ALL PLASTIC PLUGS
is no need for a 3rd (green) wire in this arrangement: 3 wire male plugs are
used to simplify getting the polarity correct when under duress and
pressure, nothing more.
You will remember that wall sockets are "hot" and have female
connections, and when you plug in an appliance or cord that all exposed
connections disappear or are covered. That is to avoid the hazard of a
self-induced hair raising experience known variously as "electric shock
therapy" or electrocution. But the device you have just constructed has
male plugs at both ends! Obviously caution is mandatory here, and things
must be done in the correct sequence. But there is no alternative to
this method that I know of, so you simply must be careful, keep the rug
rats away, don't stand in a puddle of water, and tell the spouse to pray
instead of scream.
Fire up the engine on the dead generator and warm it up until it runs
smoothly with the choke off: it isn't under load yet, but it will be.
Then fire up the borrowed generator. Plug your contraption into the dead
generator, then into the spare generator or household current. The three
60 watt bulbs will start flashing: when they are perfectly in sync,
carefully pull the plug from the spare generator, then the other
generator which has just been re-energized. DO
NOT TOUCH THE EXPOSED ENDS OF THE PLUGS - THEY ARE HOT!
Using a voltage tester, you will find the "dead" generator is now
putting out 110 VAC power AT THAT SOCKET. If you have a 220 VAC
generator, test the other 110 VAC socket: if it is dead, energize it in
the same way as outlined above. Then both 110 volt armatures will be
putting out 110 VAC 60 cycle power in sync, and combine to produce 220
VAC as well.
Yes, the system described above works, and works well. Using this
technique will enable you to salvage a useless generator at very little
cost. And done with care it need not be a hair raising experience --
quite handy for those of us lacking same.
ALSO FLASH WITH
A 9 VOLT BATTERY WORKS LIKE ON WACKER BRAND.
This tip comes from the Briggs & Stratton Customer
Education Department. As an alternative to flashing a rotor winding with a
battery applied to the brushes, an electric drill may be used. Follow these
steps to flash the generator:
- Plug the electric drill into the generator receptacle. (Cordless
drills do not work)
- If the drill is reversible, move the direction switch to the forward
- Start the generator
While depressing the trigger on the drill, spin the
drill chuck in reverse direction. This will excite the field and the
generator will now produce electricity. If spinning the chuck one
direction does not work, try spinning the chuck in the other direction
as you may have the reverse switch positioned backwards.
Use caution not to get your hand or other materials
caught in the chuck. As soon as the field is excited, the generator will
produce power and the drill will turn on.
The reason this works is because the electric motor in
the drill will act as a small generator when spun backwards. The magnets in
the drill's motor induce a voltage into the motor windings, which is fed
back through the trigger, cord and into the generators receptacle. From
there it goes into the power winding of the stator. The voltage going
through the power winding creates a magnetic field, which is intensified due
to the iron core of the stator laminations. The rotor intersects this
magnetic field as it is spun past the power winding, thus inducing a voltage
in the rotor winding. Once current flow is present in the rotor winding the
rotor has been flashed.