Farm Equipment - Hand Clutch Throwout vs. Spring Trip Plow Beams

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Hand Clutch Throwout vs. Spring Trip Plow Beams

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=209749
Printed Date: 17 Jan 2026 at 6:21pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Hand Clutch Throwout vs. Spring Trip Plow Beams

Posted By: wjohn
Subject: Hand Clutch Throwout vs. Spring Trip Plow Beams
Date Posted: 17 Jan 2026 at 3:12pm

For anyone who has plowed with a WD/WD-45 and experienced both the hand clutch trip/throwout kit, and a 60- or 70-series plow with individual spring trip mechanisms on the shanks/bottoms... Does one work better than the other?

I don't think AC had auto-reset trip bottoms on those models of plows, so I think you were stopping forward travel with either mechanism. You either had to shift to reverse and re-engage the hand clutch to unhook a plow bottom from a big rock/root, if the throwout mechanism had tripped it... or you had to stop and reset the plow bottom that tripped. Correct?

I think I have enough parts to put the hand clutch throwout on one of my tractors, so I'm probably going that route. I was just curious if there was a big advantage to buying a 60- or 70-series plow with the trip bottoms.

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

Replies:

Posted By: PaulB
Date Posted: 17 Jan 2026 at 3:18pm

The 60 or 70 series plows were not spring trip, but shear bolt beams. The trip beams started with 80 series plow frames.

Often I've had trip beam plows that would reset themselves after stopping by just lifting the plow quickly.

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

Posted By: dr p
Date Posted: 17 Jan 2026 at 6:03pm

I have a hand clutch throwout and a lot of rocks. It is very difficult to set it correctly. It tends to be very sensitive especially when using a disk plow