|
Tractor Talk Discussion Board |
Re: Open Center vs. Closed Center Hydralics
[ View Follow Ups ] [ Post Followup ] [ Return to Tractor Talk Discussion Board ]
Posted by hervé on February 11, 2000 at 10:40:36 from (164.138.75.164):
In Reply to: Open Center vs. Closed Center Hydralics posted by Greg on February 11, 2000 at 10:18:41:
hello, i try to make a simple response on a big subject. On a tractor you can have the two types. With an open center, the pump is a gear pump, so the flow rate is always the same. When a remote valve on the tractor is in the neutral position, the valve receive the flow and return it directly to the tank with no pressure.
With a closed center, the flow can't travel the the remote valve on the neutral position so the pressure increases. With an axial pistons pump, the plate which drive the pistons came at a right angle with the drive shaftwhen the pressure increases, so there is no stroke for the the pistons, so you don't have flow. The most important advantage is to use one pump for all the function of the tractor. I hope this help you. If I made some mistakes, excuse me but my english is a little bit difficult for a french man like me. Hervé
Follow Ups:
Home
| Forums
Today's Featured Article -
Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
... [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]
Copyright © 1997-2025 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 |
|
