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 Pulling Discussion Forum

Are all dynos equal?

Welcome Guest, Log in or Register
Author 
mta puller

10-21-2003 13:14:18




Report to Moderator

Does anybody have any experience on how different dyno's read hp, some show a higher # than others, and how about the ones that convert torque to hp and so on, m-w vs newer dynos?




[Log in to Reply]   [No Email]
Jim F.

10-22-2003 06:42:43




Report to Moderator
 Re: Are all dynos equal? in reply to mta puller, 10-21-2003 13:14:18  
Myself and a few buddies have joint ownership in a M&W dyno. This machine was well taken care of and when we purchased last year we went all through it. New oil, tach cable, flushing everything out. I feel it is a good machine. A few tractors we have checked have read within a few HP (1-2) of other dynos, one being a local club dyno and another in Ohio. Now alot of different variables here, altitude, air quality, was the dyno properly warmed up? A cool dyno will read more HP, etc. But referring to the original question asked, I would say yes they should read fairly equal results. Hope this helps resolve any issues.

[Log in to Reply]  [No Email]
vjohnyboy

10-21-2003 16:27:25




Report to Moderator
 Re: Are all dynos equal? in reply to mta puller, 10-21-2003 13:14:18  
most dynos are close in horse and and if calibrated they should be real close now a m&w hydraulic will only reed at rated rpms but the one we use at our shop is a A&W it is digital and seems to be very accurate we calibrate it often and have had complements on it but it reads foot lbs horse and torque rise



[Log in to Reply]  [No Email]
G-MAN

10-21-2003 14:02:02




Report to Moderator
 Re: Are all dynos equal? in reply to mta puller, 10-21-2003 13:14:18  
Comparing different brands and vintages of dynos is like comparing apples and oranges. And any dyno is only as accurate as the operator. In my opinion, you're best off to use the same dyno and the same operator for every test, if you are using to check performance gains. Otherwise there is no way to get consistent results. Even if the dyno is older and is off by 5%, it should at least be off by 5% time and again, which will probably produce more accurate results than using dyno X one time and dyno Y the next. Any shop that uses their dyno a bunch, should be making sure that it's kept fairly accurate. But, a lot of implement dealerships and other shops don't get that into accuracy, because they use the dyno as a diagnostic tool, not a precision measuring instrument. Being 5 hp off on a 200 hp tractor isn't a big deal, but 5 hp off on a 40 hp tractor is.

[Log in to Reply]  [No Email]
exactly

10-21-2003 14:50:47




Report to Moderator
 Re: Re: Are all dynos equal? in reply to G-MAN, 10-21-2003 14:02:02  
I've seen dynos read 15 hp difference on the same tractor with no changes between runs.



[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