Will a 12 volt starter solenoid work on 6 volts?

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Model T Ford Forum: Forum 2017: Will a 12 volt starter solenoid work on 6 volts?
Top of pagePrevious messageNext messageBottom of page Link to this message  By David Kriegel Mishawaka Indiana on Saturday, May 27, 2017 - 07:00 am:

Still repairing my shorted out burned foot starter mechanical switch. Rebuilt with plenty of insulation. Installed WITHOUT doing a continuity check so not yet working. If it fails this AM need to install a modern solenoid for this evening at least to drive it !! ALL advice appreciated Go to Auto Zone ? and get a 12 volt? Will it work??


Top of pagePrevious messageNext messageBottom of page Link to this message  By Steve Blancard, Fredericksburg Va on Saturday, May 27, 2017 - 07:20 am:

Order a 6 volt solenoid and hand crank in the meantime. A 12v solenoid will be very sluggish on 6v and may not engage at all.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Gary Tillstrom 30 miles N of Memphis TN on Saturday, May 27, 2017 - 07:31 am:

Isn't there a tractor supply store or farm and fleet store near you? You should be able to find a 6 volt there as all Ford tractors prior to 1965 were 6 volt.


Top of pagePrevious messageNext messageBottom of page Link to this message  By David Kriegel Mishawaka Indiana on Saturday, May 27, 2017 - 07:37 am:

Gary thanks YES will call stores as soon as they open


Top of pagePrevious messageNext messageBottom of page Link to this message  By David Kriegel Mishawaka Indiana on Saturday, May 27, 2017 - 07:41 am:

These are what I need for 6 volt THANKS
Tisco Solenoid Relay, 311007FR
Tisco Solenoid Relay, 311007FR

$12.99

Tisco Starter Solenoid, NCA11450A
Tisco Starter Solenoid, NCA11450A
SKU #23667799


Top of pagePrevious messageNext messageBottom of page Link to this message  By Cameron Whitaker, Oklahoma City on Saturday, May 27, 2017 - 02:31 pm:

If you need to get it to work ASAP, hook a lantern battery in series with your main 6 volt battery. That way, the coil of the solenoid will see 12 volts, but the rest of the car will remain at 6 volts.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Wayne Sheldon, Grass Valley, CA on Saturday, May 27, 2017 - 06:08 pm:

So much more to electricity than voltage! Intermixing battery types is risky at best. At worst, mixing lead-acid with dry cells can be downright dangerous. The amperage capacity of one can over-power the other, leading to fire or even a minor explosion.
Mixing solenoids gets very complicated. The current draw through the contacts for a six volt starter is roughly twice the current draw for a twelve volt starter. So the solenoid must have much heavier contacts. Pulling twelve volts through the six volt contacts should be okay, power wise. Activating the six volt solenoid with a twelve volt battery could be risky, though, because it is the insulation quality in the electromagnet that may become compromised. Depending upon the quality of the unit.


Top of pagePrevious messageNext messageBottom of page Link to this message  By David Kriegel Mishawaka Indiana on Saturday, May 27, 2017 - 08:22 pm:

Thank you POSTERS Had to replace the standard foot starter button with a 6 volt 3 pole starter solenoid. Installed - no work!! Thanks to a 2014 post, with a wiring diagram, I saw that is was triggered by a NEGATIVE ground not positive! THANKS Posters!!


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