Final drive ratios WC - WD
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=164914
Printed Date: 24 Apr 2024 at 5:38pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Final drive ratios WC - WD
Posted By: DaveKamp
Subject: Final drive ratios WC - WD
Date Posted: 08 Oct 2019 at 10:47pm
|
Hi Fellers! Hey... I know there were variations between differential ring/pinion ratios for WC, RC, and WD/45/D17... But what about the final drives... anybody have a list of the WC, RC, and WD/45/17 final drive pinion and bull gears?
------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |
Replies:
Posted By: Gerald J.
Date Posted: 09 Oct 2019 at 9:47am
|
I have the shop manual for the WC in several large pieces, might include the gear ratio details in my on line directory: http://geraldj.networkiowa.com/Trees" rel="nofollow - http://geraldj.networkiowa.com/Trees Gerald J. |
Posted By: DaveKamp
Date Posted: 09 Oct 2019 at 7:29pm
|
Not that I could find, Gerald... they have photos and disassembly, but no tooth counts... most likely, the technical writers assumed that it wasn't necessary to count all the teeth to determine wether they were all present...  ------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |
Posted By: DrAllis
Date Posted: 10 Oct 2019 at 7:01am
| I've got all that info at home. Will try and remember to look it up for you. |
Posted By: frnkeore
Date Posted: 10 Oct 2019 at 12:14pm
|
The Final drive tooth count on the D17, in my service manual is, 15 x 82. Effective with S/N 42001 and up, it is 14 x 76. ------------- Frank 1959 D17 Series I #24001+, '59 D14 '55 & '59 Ford 850 & 861 Ferguson TO 35 Deluxe, Oliver 70 and 5 more. |
Posted By: DaveKamp
Date Posted: 10 Oct 2019 at 11:10pm
|
Thanks Frank- so... WC after 42001, of 76/14 = 5.43:1 ratio. The differential being 3.6:1 makes the composite drive ratio 5.43*3.6 = 19.55 pinion rotations to 1 tire rotation. And for the D17 is 82/15 = 5.47:1 ratio... if the R&P was 9/35 = 3.89, that makes 5.47*3.89= 21.27 pinion rotations to 1 tire rotation. Does this all sound correct? Now, this means there's no substantial reduction difference between the final reduction drives of the WC or the WD/45/D17.... ------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |
Posted By: frnkeore
Date Posted: 11 Oct 2019 at 2:09am
|
Dave, I don't have any info on the WC. My info is for the D17, only. But, I believe that the WD45, had the same final drives (at least the later ones) as the S I D17. I'm pretty sure the S/N 42001, D17 will be a S II. ------------- Frank 1959 D17 Series I #24001+, '59 D14 '55 & '59 Ford 850 & 861 Ferguson TO 35 Deluxe, Oliver 70 and 5 more. |
Posted By: DrAllis
Date Posted: 11 Oct 2019 at 6:33pm
| RC and WC final drives are 17T x 68T for a 4.0 to 1 ratio. Ring and pinion for RC (and high wheeled WC's) was 6.6 to 1. Regular WC's were 4.7 to 1. All WD's,WD45's and D-17's prior to Series 3 finals were 15T x 82T for 5.47 to 1. Ring and pinion for all straight stick WD's ( 12T x 43T) was 3.6 to 1. Ring and pinion for late WD and all WD-45 gas tractors (13T x 43T) was 3.3 to 1. WD-45 diesels and all D-17's were (9T x 35T) 3.9 to 1 ring and pinions. Final drives on D-17 series 3 and newer and 170's were (14T x 76T) 5.43 to 1. |
Posted By: DaveKamp
Date Posted: 12 Oct 2019 at 9:58am
|
Perfect! Thanks, Doc, and all!!! (Nefarious plan thoughts going on in my brain)  ------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |