Farm Equipment - WC sherman gearing?

Print Page | Close Window

WC sherman gearing?

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=41949
Printed Date: 29 Aug 2025 at 10:00am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: WC sherman gearing?

Posted By: JM
Subject: WC sherman gearing?
Date Posted: 11 Dec 2011 at 11:18am

How much underdrive does the sherman step down provide? 20%? Thanks,Jm

Replies:

Posted By: MNLonnie
Date Posted: 11 Dec 2011 at 12:00pm

I believe 20% is right from the ground speeds I've seen in the ads.

-------------
Waukesha B, B, IB, G, styled WF, D15, 615 backhoe, 2-Oliver OC3's, 4 Ford Model T's, 3 Model A Fords, AV8 Coupe, AV8 Roadster, 1933 Ford Wrecker

Posted By: wjohn
Date Posted: 11 Dec 2011 at 12:25pm

A fellow forum member has some of the brochures on his site:

http://www.brianahart.net/sherman.htm - http://www.brianahart.net/sherman.htm

20% looks right for the step-up but I can't quite make out the speeds for the step-down.

-------------
1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45

Posted By: Fields
Date Posted: 11 Dec 2011 at 1:18pm

if you look at the antique tractor pull guide , ground speed book. Zack Peterson has tire/rpm/grearing charts for wc/wc-rc-high crop/ and sherman under dive. I think it is closser to a rc or high crop rear end. I'm looking for one for my WC puller myself.

Posted By: JM
Date Posted: 11 Dec 2011 at 3:48pm

Thanks guys. I checked out Brians brochure, looks like about 30%. JM