Wow! This is great stuff! As to steel wheels vs. rubber, I had always assumed that the v-shaped lugs would rob some power as they penetrated the soil (in effect, trying to lift the tractor). My engineering is confined to the armchair day-dreaming variety, so I could be all wet in my theories. I used to read the Nebraska tests when I had access to them at a state university library. They are marvels of concise information in tabular form. They even include the percentage of slip! The other day, I looked at an old photocopy of one of the tests, which showed the Farmall H with a slippage of 17% in first gear! Too much torque for the traction available with the narrow tires of the day, and possibly no weights/water added. The DB horsepower was correspondingly lower than it was in the other gears, where there is less torque and less slip. One of these days, I am going to try to look at a bunch of Nebraska tests of tractors on steel and rubber and see if I can come up with an average for power losses with both types of wheels. When I do, I'll post them here for the likes of us. Thanks for making my day, as Clint Eastwood might have put it (I think he paralyzed the punks with his stare, so they never really made his day).
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 - Tractor Profile: Earthmaster - by Staff. This tractor, manufactured by the Earthmaster Farm Equipment company in Burbank, California was made for only two years. The Model C came out in 1948 and was followed by the "CN" (narrow-width model), "CNH (narrow-width high-crop model), "CH" (high-crop), "D" and the "DH" (high-crop) in 1949. The main difference between the models was tire size, tractor width and cultivating height. The "D" series were about 20 inches wider overall than the
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[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.
