Pulling Forum - CA speed 1st and 2nd

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CA speed 1st and 2nd

Printed From: Unofficial Allis
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=200466
Printed Date: 08 May 2024 at 3:03pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: CA speed 1st and 2nd

Posted By: Ken in Texas
Subject: CA speed 1st and 2nd
Date Posted: 23 Mar 2024 at 3:48am

maximum speed of a allis CA in second gear

Replies:

Posted By: PaulB
Date Posted: 23 Mar 2024 at 6:37am

As per the CA operators manual with 11.2X24 tires @ rated RPM (1650):

1st-1.94

2nd-3.41

3rd-4.36

Now with 13.6X24 tires that you have @ 1650:

1st-2.08

2nd-3.67

3rd-4.68

If you're running an engine speed of 2000RPM with 13.6X24 tires:

1st-2.51

2nd-4.44

3rd-5.94

Many years ago when I started pulling a CA, I made up a speed chart with many different tires sizes and engine RPMs to figure out what size tires to switch to for what power I was making.

D10/12 tractors will have the same speeds. As the D14/15 tractors and H3 crawlers used the same gearset. For H3 there was an optional set of gears that were faster in 1st gear. I looked for many years and never found that optional gear set

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If it was fun to pull in LOW gear, I could have a John Deere.
If you can't make it GO... make it SHINY

Posted By: dgerth
Date Posted: 24 Mar 2024 at 7:06am

Mr. Ken,

When I pull our CA, 1st is only for loading on the trailer. 2nd for everything else up to 8mph, then 3rd (?) depending on the track.

dan