6 volt to 12 volt

cen · Nov 30, 2008

Do you need to change starter from 6 volt p/grd to go to 12volt n/grd ? And anyone tale me what i need to do this ?? can it be done?

Anonymous-0 · Nov 30, 2008

All you need is a 1 wire Delco alternator, some wire , any hardware necessary to change the generator bracket, possibly a new different sized fan belt, a new 12 volt battery. A new coil is optional, as many 6 volt coils will stand up to 12 volts for a couple of years. You will also need to reverse the wires at the amp meter, if so equipped. You do not need to change the starter.

RAB · Nov 30, 2008

Quite clear but he may need reminding not to forget that any bulbs will pop if not changed out.

He would be better adding a ballast resistor between the supply from the ignition switch to the coil. Starting will be improved if the coil is fed directly while cranking (bypassing the ballast).

Cen,

You don't say whether you are changing dynamo (DC generator) to alternator (usual method) or simply changing dynamo generator to 12 volts. Assuming alternator generator as you are changing polarity to negative earth.

Any 12 volt alternator will work if it will fit and has enough generating capacity for your particular situation.

Very few 'other guages and meters' fitted may need polarity changing. Radio, if fitted may have optional polarity change-over, but probably not a voltage change-over (unlikely to have a radio fited to a tractor of that era, but you never know....).

Regards, RAB

cen · Nov 30, 2008

i got 1 wire ALT PUTTING ON WOULD LIKE TO GO WITH 12 VOLT NIG GRD yes lights need to be done but can starter be used pionts/cand can i ues 12 to 6 rister

Anonymous-0 · Nov 30, 2008

Not all 1-wires alternators are the same. The best choice for a 1-wire alternator is one with a low turn-on regulator. This means the the charging system will kick-in at a lower RPM. Most older tractors run at a much lower RPM than automobile engines. If you don't use a low turn-on alternator, you may need to rev up the engine each time you start it to get the charging system to kick-in.
Another choice is the basic 3-wire alternator which is activated by the ignition switch instead of reving up to a RPM level.
K-Mo

John T · Nov 30, 2008

Cen, when changing from 6 to 12 volts the starter can remain unchanged and work okay, they can be a bit tough on starter drivers due to that higher kick in torque, but Ive never had any trouble leaving them as is when I converted from 6 to 12 volts, I try to avoid real long cranking times which could get them hot.

It will still turn the same direction REGARDLESS if at Pos or Neg ground.

Most except for custom made alternators are for NEGATIVE ground.

If you have a 6 volt coil and coil/distributor ignition and you go to 12 volts, you must EITHER (if old 6 volt coil is kept) add an external series voltage dropping (12 to 6) Ballast Resistor after the ignition switch before/ahead of the coil OR ELSE use a new full true 12 volt coil NO BALLAST REQUIRED

ALSO if you change polarity the coil leads need swapped, for neg ground the lil + gets switched ignition input voltage with the lil - going to distributor but for Pos ground the - gets ignition switched input voltage while the + wires to the distributor.

The same points can be used regardless for 6 or 12 volts..

Of course, change lights to 12 volts

John T

old · Nov 30, 2008

As John-T says.
Hobby farm

Anonymous-0 · Nov 30, 2008

The other thing that you can do is to put a different pulley on the alt, to speed it up a little.

GA Dave · Nov 30, 2008

(reply to post at 04:26:15 11/30/08)

ttp://www.ytmag.com/articles/artint131.htm[/url]

6 volt to 12 volt

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