Farm Equipment - pros/cons

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pros/cons

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=68089
Printed Date: 31 Aug 2025 at 6:24am
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Topic: pros/cons

Posted By: Alex09(WI)
Subject: pros/cons
Date Posted: 03 Apr 2013 at 10:34pm

What are the pros and cons of putting a CA transmission in a C tractor?
Thanks

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A&W TRACTOR 920-598-1287
KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY

Replies:

Posted By: morton(pa)
Date Posted: 03 Apr 2013 at 10:50pm

Well, the CA was quite different from the C from the torque tube back.

If your just specifically speaking of the transmission, it would be the addition of 1 gear.

Other then that, differences include final drives that accommodated the hand clutch, an all new hydraulic system, the Pin Hitch/Snap Coupler/Traction Booster hitches, etc. just to name a few...

Posted By: Alex09(WI)
Date Posted: 03 Apr 2013 at 11:15pm

Will the PTO turn at a different speed? Would the B/C PTO housing bolt to the CA transmission? I do realize that I would have a CA serial number. The main reason for the upgrade would be the addition of a road speed gear.

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www.awtractor.com
A&W TRACTOR 920-598-1287
KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY

Posted By: JohnCO
Date Posted: 04 Apr 2013 at 12:25am

I believe the PTO housing is the same but there are much more knowledgeable people on this site.

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"If at first you don't succeed, get a bigger hammer"
Allis Express participant

Posted By: Dusty MI
Date Posted: 04 Apr 2013 at 8:25am

If you get serious about it, get a parts book for both of them.

Dusty

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917 H, '48 G, '65 D-10 series III "Allis Express"

Posted By: GregLawlerMinn
Date Posted: 04 Apr 2013 at 9:59am

Morton said it; a CA tranny will give your C one more gear. The CA tranny was prone to wear one 3rd gear and many jump out; very expesive to fix. The B/C/CA share many parts and it is not uncommon to run into one that has had the parts interchanged. A link to a PDF file on the B/C/CA tractors below.

http://www.frontiernet.net/~garosier/Little%20ACs.pdf" rel="nofollow - http://www.frontiernet.net/~garosier/Little%20ACs.pdf

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What this country needs is more unemployed politicians-and lawyers.
Currently have: 1 D14 and a D15S2.
With new owners: 2Bs,9CAs,1WD,2 D12s,5D14s,3D15S2s, 2D17SIVs,D17D,1D19D;1 Unstyled WC

Posted By: rpropst
Date Posted: 04 Apr 2013 at 4:02pm

I may be wrong but I think the extra gear in the CA transmisson will give you 1 lower gear. I think my B will run as fast as my CA in top gear.

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1950 snap coupler B 1948 WD 1951Ca 1952B 1952adjustable axel B

Posted By: George Davenport
Date Posted: 04 Apr 2013 at 4:08pm

A post reply a few days ago addressed this topic, and revealed that top forward speed of the B is 7.8 and the CA is 11.3.

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Life is what happens while you are making plans for the future

Posted By: George Davenport
Date Posted: 04 Apr 2013 at 4:22pm

Further information of interest was posted by CTuckerNWIL on 29 Mar and topic was titled "Looking for Project-questions". It was very informative.

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Life is what happens while you are making plans for the future

Posted By: rpropst
Date Posted: 04 Apr 2013 at 4:52pm

B and C is rated at 1500 rpm CA rated at 1650 rpm. CA rated with 10-24 tires B and C rated with 9-24 tires

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1950 snap coupler B 1948 WD 1951Ca 1952B 1952adjustable axel B