Posted by jdemaris on October 31, 2008 at 19:48:18 from (72.69.238.181):
In Reply to: 4wd question posted by dave2 on October 31, 2008 at 14:48:53:
It's not really as simple as one wheel driving in front and one in back. The differential sends power to both wheels on each axle (i.e. four in total) - but on each axle, the wheel with the least traction gets the most power. So, even if one wheel is spinning, it doesn't mean there isn't any power pushing on the other. It's just not enough to move the car/truck. The only time there is just about no power on the non-moving wheel - is when the other, spinning wheel, has absolutely no traction - like when it's off the ground. It's an inverse situation. On one axle, the wheel with 80% of the traction gets 20% of the power, whereas the other wheel with 20% of the traction gets 80% of the power. Sometimes if you carefully apply the brakes, you can equalize the load on all the wheels and make all spin.
Oliver Cletrac crawlers used automotive type differentials to run the tracks and also could lose all power to one track if the other was up in the air. Even so, they advertised it as having power to both tracks at all times - which was almost true - but not equal power.
By the way, I just picked up a 99 Kia Sportage to use as a winter-beater. 4WD, and 5 speed trans. After looking at it closely, I was suprised to find out the 2 liter engine is a Mazda design, and the trans is a German Gertrag - same make as the trans in my Dodge Cummns-diesel truck. I just drove it 900 miles to Michigan (where I am right now) and got 29 MPG with it. I'm pretty impressed with it.
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 - On the Road with Dave Gohl: Deere Departed Friend - by Dave Gohl. Have you ever had to part with a dear friend? It's not easy. If it's due to death, your feelings could be in disarray for days, months or even years. Even now after almost 4 years, I still miss my dad. I remember when I was a kid my dad sometimes would tuck my brother and I in at night and we would ask him questions about his childhood on the farm. To this day, it's some of the best stories I've ever heard. And now, I'm so glad that I asked those questions, and if I were a little smarter i
... [Read Article]
Latest Ad:
1965 International Harvester McCormick Farmall cub tractor 2,500. Two owner tractor. My grandfather bought new in 1966, then we inherited it. Have all the paperwork original manual and all maintenance records. It starts and moves. Comes with underbelly mower, plough, and some other attachments.
[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.
