Quoting Removed, click Modern View to seeIt made sense when you said that increasing the field current and speed could allow you to produce 12V with a generator rated for 6V. Whether the generator could handle the extra heat depends on the generator. I believe you did it with a particular 6V genny, but not all 6V gennys can handle the load.
As for the CCA rating, that tells you something about how long it can keep cranking. The starter motor will draw the amperage needed to turn the engine. It will not draw the amperage available. I hook half horse motors to the grid all the time and they never put out 1.7 gigawatts.
E=I x R so I = E/R
As long as the starter motor is turning there is resistance, and the amps flowing will be a function of the voltage and resistance. The starter wattage depends on the starter, speed, voltage at whatever amperage the battery is putting out. The fact that the 6 Volts x 625 Amps battery can produce 3750 Watts for 30 sec does not mean that your starter can or will put out 3750 Watts.
CCA is a measure of the battery power available for 30 sec before the voltage drops below the minimum for the test. Fewer amps, more time. CCA only tells you about how long it can keep cranking. 650 amps for 30 sec is 19500 amp seconds. If the load is 200 amps, it will crank for about 100 seconds before the voltage drops below the test limit.
Upload one or more videos to your post. Photo and video filesizes should be less than 8MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - A Brief History of Tractors in Australia - by Bob Kavanagh. After Captain Cook's exploration of the east coast in 1770 the British Government decided to establish a penal colony in Australia. The first fleet arrived in 1788 and consisted mainly of convicts who were poorly equipped and new little of farming techniques. The colony remained far from self-supporting and it was not until the early 1800's that things started to improve. Free settlers started to arrive, they followed the explorers across the mountains and where land was suitable set up farms. T
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[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.