|
Tractor Talk Discussion Board |
Re: aux trans for PTO
[ Expand ] [ View Replies ] [ Add a Reply ] [ Return to Forum ]
Posted by jdemaris on January 19, 2007 at 09:13:42 from (66.218.11.140):
In Reply to: Re: aux trans for PTO posted by LouNY on January 19, 2007 at 07:40:45:
Seems kind of shame to have to step the PTO speed up when your PTO generator transmission is already stepping it down.
As I mentioned, the Ford A tranmssion has a 2nd gear of 1.6 to 1. So, if you ran it backwards, you'd get a step-up of 1.6 - more-or-less what you're looking for. Unlike most modern transmissions, the Model A trans is just about as rugged on either end.
With your Oliver - assuming it's a diesel - it's going to be pretty inefficient being used to make 12 horsepower no matter how you gear it. I might use more fuel if used at a lower than peak RPM. At 2200 RPM when worked at 54 horsepower it's efficiency rating is 12.3 HHG. When worked 40 horsepower the efficiency drops to 10 HHG. At 35 horsepower it drops to 8.5 HHG.
I'll guess and put your tractor at around a 5 horsepower hours per gallon at 12 horsepower at PTO rated RPM. - that's quite a drop. All those figures are at full rated engine speed. So, what happens when you test the same horsepower loads at lower RPMs? I don't know for sure. But, the newer Nebraska tests show some gain with heavy loads. One newer Deere test - 75% load at full 2200 RPM shows a 14 HHG rating, but same 75% load at 1700 RPM shows an efficiency gain to 16.5.
A newer Deere 80 horse tractor - one of fuel-efficiency "record breakers" has an efficiency rating of 18 HHG at full load but drops to 6 HHG at 17 horsepower.
Replies:
Home
| Forums
| Order Support
Today's Featured Article -
New Hitches For Your Old Tractor - by Chris Pratt. For this article, we are going to make the irrational and unlikely assumption that you purchased an older tractor that is in tip top shape and needs no immediate repairs other than an oil change and a good bath. To the newcomer planning to restore the machine, this means you have everything you need for the moment (something to sit in the shop and just look at for awhile while you read the books). To the newcomer that wants to get out and use the machine for field work, you may have already hit a major roadblock. That is the dreaded "proprietary hitch". With the exception of the
... [Read Article]
Latest Ad:
one 8n and one 9n tractor. totaly restored,pretty much everything is new. one 6ft blade good shape.
[More Ads]
Copyright © 1997-2026 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 |
|
