|
Tractor Talk Discussion Board |
Re: Prony/pony brakes
[ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by Jerry/MT on December 08, 2004 at 21:11:22 from (206.183.120.220):
In Reply to: Prony/pony brakes posted by JT on December 08, 2004 at 07:20:51:
A Prony brak consists of a brake band that clamps on a spinning shaft. Connected to the brake band is a lever arm that reacts against a spring scale or a load cell. The shaft is set spinning and the brake band is clamped down till the shaft just begins to slow down. The force is measured at that point as is the rpm and the horsepower is calculated by : HP = rpm x lever arm length x measured force/5252. Needless to say, the answer you get is not too precise. I don't understand how you can get power and torque information from the Baker Fan without a calibration based on measured dimensions, air density, rpm, Reynolds No., etc. You can ceratinly load a shaft with the device but what's the load? buickanddeere suggests a more precise method for determining power directly and toruqe via : Torque = HP x 5252/rpm. My two cents.
Follow Ups:
Home
| Forums
Today's Featured Article -
Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[More Ads]
Copyright © 1997-2024 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 |
|
