Pulling Forum - torque???

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torque???

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Category: Other Topics
Forum Name: Pulling Forum
Forum Description: Forum dedicated to Tractor and Garden Pulling
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=67847
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Topic: torque???

Posted By: blue924.9
Subject: torque???
Date Posted: 30 Mar 2013 at 3:04pm

i know that a wd made roughly 34 horsepower. my question is how much torque would it make, i would assum alot on account of the load it can pull and i know that part of that is due to the steep gears that any tractor has but i was just wondering

Replies:

Posted By: Carl(NWWI)
Date Posted: 30 Mar 2013 at 3:39pm

My WD-45 put out about 380ftlbs at 39hp. So maybe about 330-350ftlbs??

Posted By: wi50
Date Posted: 30 Mar 2013 at 3:46pm

hp= (torque X speed) / 5250

so if it had say 34 hp at pto speed, lets just say that's 40 engine flywheel hp at 1400 engine RPM.

that's 150 ft lb of engine torque.

or if it had 40 hp at 1200 RPM, then it's 177 ft lb of engine torque

Numbers above are arbitrary for arguments sake.

if a good old snotty Allis 220 makes a bit over 200 pto hp at 1800 engine RPM on the dyno or lets just say 240 flywheel HP that's only 700 ft lbs of torque.

A good CAT in a truck can crank out an easy 1850 ft lbs. A small block 60 series Detroit may still have the same HP rateing but it's at a much higher RPM, better have some gears to find with the Detroit or just tickle the kitty and listen to it purr.

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"see what happens when you have no practical experience doing something...... you end up playing with calculators and looking stupid on the internet"

Posted By: mlpankey
Date Posted: 30 Mar 2013 at 6:55pm

Actually the smaller cubic inches a motor is the higher the initial torque will be. But a engine of the same family with more cubic inches will make more torque overal in the rpm range torque is produced at 5250 torque anx hp are the same number value

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people if they don't already know it you can't tell them. quote yogi berra

Posted By: Ihateillinoisnazis
Date Posted: 30 Mar 2013 at 7:24pm

Don't listen to the village idiot. Listen to physics. The equations are simple, Wi posted what you need.

Posted By: mlpankey
Date Posted: 30 Mar 2013 at 7:32pm

The formula works not denying that horsepower and torque intersect at 5250. A 358 sb2 will initionaly show more torque down low than a 430 ci sb2 but around 4 grand the 430 kicks butt and will make 800 on anyones dyno but will be hard pressed to make over 640 torque.switch to 13 degree stuff and pjck up 50 ftlbs of torque with cheaper overall parts build

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people if they don't already know it you can't tell them. quote yogi berra