| [ Total Views: 654 | Total Replies: 10 | Thread Id: 15350 ] |
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 karmannghia60
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Karmann Ghia Sucker
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| posted on November 3rd, 2003 at 07:55 PM |
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Can I jump start a 6v car using a 12v battery?
I am assuming I shouldn't do it but I thought I would ask anyway. Nothing will be turned on. What about the generator and regulator, will they
cook themselves?
Raf
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Grey 57
A.k.a.: Dean
Son of Jim - Creator of Good
Old Grey Cruiser
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| posted on November 3rd, 2003 at 08:04 PM |
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This is how I have done this Raf. Not strickly a good thing to do but here goes.
Connect the jump leads to the 12 volt. Connect the negetive 12 v to the neg 6v
Turn the ignition on and crank the engine. When its cranking slowly on the 6 volt only connect the 12 volt positive to the positive 6 volt battery
terminal.
Disconnect when the motor starts or when you stop cranking the motor.
The cranking starter will draw all the voltage away from the things that could blow up with too much voltage.
Disconnect the generator if you are worried about it.
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vwtyp2
Son of Jim - Creator of Good
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| posted on November 3rd, 2003 at 08:07 PM |
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fine, I do it on a fairly frequent basis.
give the old bluey a 12v kick in the pants.
connect the jumpers up to the 12v, and the -ve to the 6v. turn the ign. on in the 6v and get it turning, then connect the +ve as its turning.
she'll start spinning a whole lot quicker than normal and won't take long to run. disconnect the jumpers fairly quickly as they start to
warm up fairly rapidly.
heres a snap of ol' bluey
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Most people seem normal, till you get to know them.
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1303Steve
A.k.a.: Steve Carter
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| posted on November 3rd, 2003 at 08:11 PM |
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Hi
Do it the way suggested, but there is a risk of explosion from gases in the batteries, connect the - last to somewhere on the chassis or block on the
donor car, that way any sparks are away from the battery.
1302Steve
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68AutoBug
A.k.a.: Lee Noonan
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 posted on November 3rd, 2003 at 08:22 PM |
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Some people live dangerously****
sounds like a two man or woman job... and a bit iffy... I wouldn't do it....
In the old days when battery cells were connected together with large lead straps it was easy to get 6 or 8v from a 12 volt battery then... but its
very easy to do damage to Your Coil voltage regulator & Generator plus everything else that is 6V and switched on....
Foot on the brake.... bulbs blown...
Radio On... Yikes...
Blinker or trafficators accidently turned on.. where's that smoke coming from???
Too dangerous for Me guys... Lee
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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68AutoBug
A.k.a.: Lee Noonan
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| posted on November 3rd, 2003 at 08:26 PM |
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- = minus or Negative - there it is again...
from the previous post.... - means the negative terminal of the battery or earth on that vehicle...... it is a minus sign... not a mistake or I
hit the wrong key.... LOL
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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karmannghia60
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Karmann Ghia Sucker
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| posted on November 3rd, 2003 at 08:49 PM |
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The 12v battery I was going to use is fairly dodgy so it have about 9v only anyway. Should be OK, right?
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 vw54
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| posted on November 4th, 2003 at 06:25 AM |
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Ive been doing it for years... no problems just once it starts up remove the 12V ASAP.
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decked dubby
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| posted on November 4th, 2003 at 07:15 AM |
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^^^^ As Dave said. ^^^^^
.
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Menangler
A.k.a.: Dave Becker
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| posted on November 4th, 2003 at 03:31 PM |
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what Dave said, never blown even a bulb.
FAHRVERGNUGEN;
Description of a pleasurable sensation,
Experienced when a car and it's driver are in mutual harmony, A unique driving experience, Pleasure, Satisfaction,
A feeling experienced by Volkswagen Drivers.
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oval TOFU
Son of Jim - Creator of Good
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| posted on November 6th, 2003 at 01:05 PM |
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what Dean and Dave said.... I cranked my beetle till i saw some smoke coming off the (-) lead from the jumper leads from all the current being
drawn... If jumping from your dodgy 12V batt doesn't start the engine, use on thats in a car with the engine idling... other wise you'll run
the risk of having two flat batteries... just idling is fine,,, don't rev...
this is what i did...:thumb
...and Robert's ya father's brother...
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