Posted by buickanddeere on January 31, 2011 at 11:47:30 from (192.75.48.150):
In Reply to: Re: HP??? posted by jackinok on January 31, 2011 at 08:56:18:
You can't cheap the laws of physics. Plug the numbers into the formula and see. Contrary to the feeling of many. 100lb ft of torque at 3000rpm. Makes exactly the same amount of power as 300lb ft of torque at 1000rpm. Many people get confused with "torque rise" when an engine is overloaded and lugged. They think the engine has become more powerful, which it has not become more powerful. Less work is being peformed per hour when lugged to peak torque vs. when operated at peak HP rpms. As for long stroke vs. short stroke? Peak torque occures at the rpms where peak volumetric effeicency occurs. Take the same heads cam, manifolds etc eg a small block Chevs. A long stroke small bore 265 from the early 1980's and dyno the engine. Transplant everything onto a different short block with a large bore 4" bore and a crankshaft destroked to make 265cu ". Much to most peoples shock, the large bore, short stroke engine will make the same HP and torque. What you are lossing in stroke leverage you are making up in more piston surface area for combustion pressure to push against.
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 - A Brief History of Tractors in Australia - by Bob Kavanagh. After Captain Cook's exploration of the east coast in 1770 the British Government decided to establish a penal colony in Australia. The first fleet arrived in 1788 and consisted mainly of convicts who were poorly equipped and new little of farming techniques. The colony remained far from self-supporting and it was not until the early 1800's that things started to improve. Free settlers started to arrive, they followed the explorers across the mountains and where land was suitable set up farms. T
... [Read Article]
Latest Ad:
For sale Farmall super A tractor is complete and has just been setting for awhile,it was running when pulled out of the barn,shouldn’t take to much to get it going asking 1100.00
[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.
