George: As the others have said, common sence is of the utmost importance here. I agree you shouldn't be draging trees in 3rd gear, if that tree fetches up it will flip you and tractor quicker than you can say the word "flip". This is no log skidder.
I question your horse power comparison between A and SA. With engines in same condition they should be exactly the same, and I'll give the edge to the A as it doesn't have to turn a hydraulic pump. The A was tested at Nebraska, the SA never was tested at Nebraska. IH chose to let the SA fly on the A record, rather than test it at Nebraska and have it not do quite as well as the A. I doubt if that hydraulic system would take more than a fraction of a hp, however the test would pick it up.
To address your too much load question, your A and SA can't get enough traction to harm the power train. IH used basically the same engine in C and SC and with 36" tires those were noted for shorter engine life than in the offsets. From the factory the A, SA and C were 113 cubic inch, late SA after serial 356001, SC, 100, 200, etc were 123 cubic inch. All 113 engines could be upgraded to 123, this could be the reason your noticing more hp than your A had.
As far as trailer load on drawbar, as long as the castings are bolted tight to one another, you will bend the U drawbar before you break castings. That question doesn't matter how large the tractor is, there is NO MAN tough enough to stay in the operators seat long enough to break castings as long as they are tight. Towing the small tractors with chain hooked to axle might be the exception to that rule.
I used to take part in dead weight tractor pulls, 4'x 10' flat steel 1/2" plate stone boat. each tractor had to start and pull the full load 10'. After each successful pull the crew would add as much weight as operator desired. One could keep adding weight as long as the pull was successful. The winner was the tractor pulling the highest percentage of it's own weight. Most tractors will pull on that 4' x 10' stone boat between 2.5 and 3.25 times their own weight. We never saw all tractor models compete, however in our experience the hard tractors to beat were offset Farmalls, the Farmall H and the Cockshutt 30. I've seen more than one guy show up with big 6 cylinder Olivers, Cockshutts or Farmall M, only to leave disappointed. Proves one thing,"The bigger they are, the harder they fall".
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 - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
... [Read Article]
Latest Ad:
Variable pulley for case 1530 skid loader
[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.
