Im not smart enough to tell just by looking, but heres a few tidbits that may or may not help.
A genny dont necesarily know its output voltage, its increased if you turn it faster or pump more current through its field coils
Some old Delco gennys that had a black tag were 6 volt while 12 volt had a red tag
Seems like a lot of 6 volts Ive seen had closer commutator spacing (smaller segments) then the 12 volt units
The open unloaded output voltage dont tell you all that much as it will be considerably higher then if coupled up to a load like a big electron bank such as a battery.
If theres a way to answer your question by using an ohm meter, I like JMOR's approach since the field current is one of the most relevant parameteres and their resistance corresponds to the gennys voltage. The fields typicaly may pass say 1 to 4 amps and if a body had the Delco specs he could determine if they are for a 6 or 12 volt gennys butttttttt if he had all the specs he would likely already know what genny it was!!!!!!! I have some specs and maybe knowing the field resistance (As JMOR posted) could answer your question??????
If theres an old fashion mom n pop genny alternator starter shop near you Im sure they can tell either by resistance checks or better yet hook it to a load n spin it
If you posted the tractor make n model number on the appropriate (Ford, IHC, JD etc) forum they can likely tell you what it had originally!!!
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
... [Read Article]
Latest Ad:
Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
