Dang Anrdew, that was quick - Thanks. If it's heavier I may buy a used 140 xmission (costs more) to rebuild. Heavier might explain the R11 to R21 difference in the part No. for the xmission shaft.
Now about the gearing - Sup A 1st & 4th gears have 16 and 37 teeth on the xmission shaft, and 45 and 24 on the pinion shaft. 140 1st & 4th gears have 14 and 37 teeth on the xmission shaft, and 47 and 27 on the pinion shaft.
If I calculate the ratio of pinion shaft rpm to engine rpm I get:
Sup A 1st & 4th = 0.355 and 1.540 140 1st & 4th = 0.298 and 1.37
Unless there is a difference in gear teeth in the differntial/bull gears etc (which I don't think there is), the super A would be 19% faster in 1st and 12% faster in 4th than a 140. One of my 140's is alot slower in 1st than the other, so I'm thinking the other must have 1st gears from a super A. Of course I could be missing something and totally wrong in all of this.
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 - Experimental Tractors Article - by Danny Bowes (Dsl). Tractor technology appears to have nearly hit it's pinnacle of development. If you agreed with the subtitle, you are rather mistaken. Quite, actually. As a matter of fact, some of the technology experimented with over 40 years ago makes today's tractor technology seem absolutely stale by comparison. Experimentation, from the most complex assembly to the most simple and mundane component, is as an integral a part of any farm tractor's development
... [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.
