|
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
| Order Support
Today's Featured Article -
Identifying Your Tractor - by Staff. Maybe you bought it from a friend who didn't know what kind of tractor it was, or perhaps (and this is every tractor fanatics dream) you stumbled across it in an abandoned field covered with weeds but intact. In any case, you have no idea what the make and/or model is. For awhile perhaps it doesn't really matter. Especially if it runs! But pretty soon you'll probably need to tinker with it a bit and maybe buy a part or too. Having a manual is nice. But how does one go about dete
... [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]
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 |
|
