Tractor Talk Discussion Board |
Re: Gear Ratio Math?
[ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by Alberta Mike on January 19, 2002 at 13:55:51 from (209.47.89.119):
In Reply to: Gear Ratio Math? posted by K-Mo on January 19, 2002 at 06:06:48:
I guess there are 10 different ways of looking at this. I used a percent change from one gear in a pair to the next gear in that pair. Does this following explanation make any sense? STANDARD: The 22:14 ratio gives you a 157% gearing "up" change (since 22 is 157% greater than 14). Now some guys will argue with this math, but taking 157% as 1.57 as a decimal, then 14 X 1.57 = 22 (approximately). This is followed by a 14:47 or 336% negative change for the next pair of gears which are gearing "down" (since 47 is 336% greater than 14). Net result is a 179% (336-157) gearing down change from start to finish for this set of 3 gears. HIGH: The 20:16 ratio gives you a 125% gearing up (higher) for the first set, followed by a 16:45 or 280% gearing down (lower) for the next set of gears. Net result is a 155% gearing down change from start to finish for this set of 3 gears. So, the standard gear set overall gears the tractor down 179% while the high gear set overall gears the tractor down only 155%. Thus, the high gear set gears down the tractor less (or is gearing it higher) and the tractor will travel faster while in the high range. Boy, hope I'm right on this after all that.
Follow Ups:
Home
| Forums
Today's Featured Article -
Memories of an IH Super A When I was ? up to 10, I worked on my Papaw's farm in Greeneville, TN every summer. As I grew older (7), it was the thrill of my day to ride or drive on the tractor. My Papaw had a 1954 IH Super A that he bought to replace a Cub. My Papaw raised "baccer" (tobacco) and corn with the Super A, but the fondest memory was of the sawmill. He owned a small sawmill for sawing "baccer" sticks. The Super A was the powerplant. When I was old enough (7 or 8), I would get up early and be dressed to
... [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]
Copyright © 1997-2024 Yesterday's Tractor Co. 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. Yesterday's Tractors - Antique Tractor HeadquartersWebsite Accessibility Policy |
|