Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Tractor Talk Discussion Forum

Hyd hose diameter question

Welcome Guest, Log in or Register
Author 
old

01-06-2007 15:56:31




Report to Moderator

With all things being equal, same GPM and same PSI. Is there any advantage useing larger size hoses. I have one tractor that uses 1/4 inch hose and I'm thinking about going to 3/8 or 1/2 inch. Is my thinking right that it will do nothing out then hold a small amount more fluid in the system?? What do you guys think.
Thanks.
Reason I'm thinking about the bigger hose is that I have it laying around but don't have much of the 1/4 inch stuff and have been digging out of my scrap stuff to find enough for what I'm doing

[Log in to Reply]   [No Email]
Paul Janke

01-07-2007 07:16:35




Report to Moderator
 Re: Hyd hose diameter question in reply to old, 01-06-2007 15:56:31  
Allis Chalmers is a piston pump, and runs high pressure. Others will know, but I think it is 3600 PSI. Make sure your hoses will take that.



[Log in to Reply]  [No Email]
Jerry/MT

01-06-2007 19:00:08




Report to Moderator
 Re: Hyd hose diameter question in reply to old, 01-06-2007 15:56:31  
Using a larger hose will give you a little more pressure for given flow at the business end of the hydraulics and means you'll have a tad more oil to add. (The reason is that the pressure loss is proportional to the flow velocity squared and the velocity at a given gpm ~ 1/Area so increasing the area reduces the velocity which reduces the pressure loss.) You'll loose a little of that pressure if you have to go back through a smaller area fitting.

[Log in to Reply]  [No Email]
Midwest redneck

01-06-2007 16:09:09




Report to Moderator
 Re: Hyd hose diameter question in reply to old, 01-06-2007 15:56:31  
1/4" hose will (can be) used at a higher pressure, check the rating on the hose itself. A 3/8" line will allow the fluid to not travel as fast in the hose as the fluid is moving. Fluid velocity in piping is as follows: .3208 X gpm/IA (IA = internal area of the hose. (this is ft/sec) SOoooo. A 3/8" line will be better then a 1/4" if it is rated for the pressure. Fluid velocity should not be more then 30ft per second. If the fluid is traveling faster then 30ft/sec in most cases the fluid will become turbulent in the line and heat up too much. BTW----I am a hydraulic systems tech/builder. One way to determine line size is the pipe port on the cylinder or valve that it is going to.

[Log in to Reply]  [No Email]
old

01-06-2007 16:30:08




Report to Moderator
 Re: Hyd hose diameter question in reply to Midwest redneck, 01-06-2007 16:09:09  
This is on an Allis C and the cylinder inlets are 1/4 and I plan to adapt up to the 3/8 or 1/2 inch hose just because I have the hoses laying around. I figure I can get the adpators for about 1/4 of what it cost to have an 18inch hose in 1/4 made, so I'm just tring to save money since I don't have much to play with right now



[Log in to Reply]  [No Email]
Midwest redneck

01-06-2007 16:33:14




Report to Moderator
 Re: Hyd hose diameter question in reply to old, 01-06-2007 16:30:08  
Sounds good to me. Saving a buck or 2 is always a good thing.



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
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 ]

Home  |  Forums


Copyright © 1997-2023 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 Headquarters

Website Accessibility Policy