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wjohn 
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Location: KS
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 Topic: CA - Heaviest Rear Mounted Implement
Posted: 06 Sep 2025 at 11:37am |
What's the heaviest fully mounted rear implement anyone's seen on the back of a CA? I found DennisA (IL)'s videos of his CA with an 8.5' 20 disk and #54 plow, and I know he has plenty of weights added up front.
Of course the closer you can keep the weight to the rear axle, the more you can lift. I would like to set up four #74 row units on a fully mounted toolbar. I am hoping this would be fairly similar to the weight (well, "moment," really, for anyone that remembers physics) of an 8.5' disk, with the disk extending back farther from the rear axle.
Am I wasting my time with the CA idea? My other option would be to set up the row units on a toolbar for a WD/WD-45 which I am confident could handle the weight. I have some weird little fields and am planning on going with 15-20" rows. So, the CA would be more nimble and I plan to cultivate with the CA anyways.
None of my CAs are Snap Coupler so I was planning on tying into the pin hitch setup, similar to how the spring tooth field cultivator is attached. I need to do some measuring... maybe I can come up with something that would work on either a pin hitch WD or CA?
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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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PaulB
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Joined: 12 Sep 2009
Location: Rocky Ridge Md
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Posted: 06 Sep 2025 at 12:51pm |
From personal experience I know it's about 800 pounds on a Carry-All. Beyond that the left lift cylinder will blow the end off due to the way the hoses are connected to the hold valve to make the Traction-Booster function. In the Oxnard heavy tillage manual for the CA tractor, it advises plumbing both cylinders to the same port of the hold valve to increase the lift capacity. However that disables the Traction-Booster. As you mentioned, The more on the lift, the more front weight is needed.
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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
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im4racin
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Joined: 12 Jun 2017
Location: Garrison ND
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Posted: 06 Sep 2025 at 3:09pm |
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I put 3 units on the back of mine and have about 100 lbs up front. Never needed more than a few lbs of seed in each hopper. If filling the hopper then 2 would be about all it can handle
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wjohn
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Location: KS
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Posted: 06 Sep 2025 at 3:47pm |
 PaulB wrote:
From personal experience I know it's about 800 pounds on a Carry-All. Beyond that the left lift cylinder will blow the end off due to the way the hoses are connected to the hold valve to make the Traction-Booster function. In the Oxnard heavy tillage manual for the CA tractor, it advises plumbing both cylinders to the same port of the hold valve to increase the lift capacity. However that disables the Traction-Booster. As you mentioned, The more on the lift, the more front weight is needed. |
Thanks Paul - that is very helpful. I'm not sure what a 74 row unit weighs since they don't list specs like that in the manual I have, but 4 of them full of seed might be pushing it. Maybe I can wrestle one off and get it on a scale, or at least ballpark it by trying to lift one.
The hose/cylinder information is good to know too. I wouldn't need Traction Booster for planting or row cultivating so I might just replumb them.
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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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wjohn
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Posted: 06 Sep 2025 at 3:52pm |
im4racin wrote:
I put 3 units on the back of mine and have about 100 lbs up front. Never needed more than a few lbs of seed in each hopper. If filling the hopper then 2 would be about all it can handle |
Well darn. Any chance you can post a picture of your setup? I am curious to see if you have them about as far forward as they can be to the rear wheels or if there could be anything to gain by shifting them forward as much as possible.
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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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jvin248
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Joined: 17 Jan 2022
Location: Detroit
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Posted: 06 Sep 2025 at 7:06pm |
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I don't see a reason you can't mount a toolbar with 4 row 20inch #74 planter units.
If you need weights, add them as far to the front as possible.
Worst case, pull off one unit at a time until you can get the performance you want (seed depth, no-till). But doesn't seem like you should have too much issue. Keep the tool bar/row units as close to the tractor as possible and put the weights as far forward as possible. I have seen a few tractor pull setups with front mounted weight brackets out three feet in front of the tractor.
I switched from 30in to 20in this year and it seemed to work well. I grow heirloom open pollinated corn no till and no chems. If you do heirlooms, make sure you space seed 8-12 inches in a row as their leaves and roots spread out. 20in row can get heirloom populations up to match the 30in row hybrid-gmo seed guys.
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Edited by jvin248 - 06 Sep 2025 at 7:10pm
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wjohn
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Posted: 07 Sep 2025 at 10:04am |
I'm not worried about getting them in the ground - I'm just worried about being able to lift them. I guess if I can't lift 4 with the CA then I will move on to the WD/WD-45. Now I'm thinking I can just replumb the cylinders, hang the rear cultivator toolbar, mount the four row units, and see how tippy things are.
I don't doubt your recommendation might work in Michigan, but dryland corn is too much of a crapshoot out here so I won't be messing with any corn at all. Milo seems to perform well regardless of row spacings based on my state's research.
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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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im4racin
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Posted: 07 Sep 2025 at 10:50pm |
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I don't have any pictures on my phone that do it justice but it's basically a copy of the rear cultivator frame but built out of 4". I use the axle brackets and lower links too. Nothing hooked to the drawbar pin or snap coupler bell. Looking back I should have gone that route but I don't think it will change lift ability. It will be a couple weeks until I can get it back on the tractor to get pictures.
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wjohn
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Posted: 07 Sep 2025 at 11:51pm |
im4racin wrote:
I don't have any pictures on my phone that do it justice but it's basically a copy of the rear cultivator frame but built out of 4". I use the axle brackets and lower links too. Nothing hooked to the drawbar pin or snap coupler bell. Looking back I should have gone that route but I don't think it will change lift ability. It will be a couple weeks until I can get it back on the tractor to get pictures. |
No rush. I was originally planning on just using a rear cultivator toolbar, but then realized how heavy the row units are and decided that might not be the best idea. 4" sounds pretty good. The parts book shows mounting brackets for 2 1/4" and 2 1/2" square bars oriented diagonally, but I'm guessing those were all planter frames like mine that were boxed in and tied to other parts of the frame like my 333 planter.
One good thing with the narrower rows is that I will have less unsupported toolbar hanging way out past the side of the tractor, like I would with 30" rows (90" span + 1/2 width of row units to mount brackets at each end). 20" rows would only need a 60" span 1/2 width of row units at each end. I know the WD and larger snap coupler field cultivators had those truss rods that tied into the end caps to help support the ends.
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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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DennisA (IL)
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Joined: 11 Sep 2009
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Posted: 22 Sep 2025 at 10:13am |
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I'm not sure how much the 8-1/2' disc weights but I wouldn't go much more.
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Thanks & God Bless
Dennis
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dfwallis
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Posted: 22 Sep 2025 at 11:07am |
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I recently tried to pick up the 2-14 plow when it was situated on lift forks and placed about 5 feet behind the lift arms. It maxed out until I moved it in a bit further. That's about ~370lbs??. It picks up a 600lb finish mower closer to the lift arms just fine (3-point lift arms ends are about a foot behind the CA lift arms). I don't know if the overpressure setting is right though.
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1952 CA13092
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IBWD MIke
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Posted: 23 Sep 2025 at 6:04am |
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A DennisA sighting! Good to see you around here, been a while.
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DennisA (IL)
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Posted: 23 Sep 2025 at 7:36am |
Yes, it's been a few years! I've had a few life changing events in the past 5-6 yrs which has turn my attention elsewhere. So I will be selling off most of my parts & equipment, just keeping a few pieces to use and play with.
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Thanks & God Bless
Dennis
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wjohn
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Posted: 23 Sep 2025 at 11:01pm |
DennisA (IL) wrote:
I'm not sure how much the 8-1/2' disc weights but I wouldn't go much more. |
Thanks, and I agree with Mike - good to see you on here again.
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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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wjohn
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Posted: 23 Sep 2025 at 11:49pm |
dfwallis wrote:
I recently tried to pick up the 2-14 plow when it was situated on lift forks and placed about 5 feet behind the lift arms. It maxed out until I moved it in a bit further. That's about ~370lbs??. It picks up a 600lb finish mower closer to the lift arms just fine (3-point lift arms ends are about a foot behind the CA lift arms). I don't know if the overpressure setting is right though. |
Thanks, that's helpful too. The finish mower weight probably lines up roughly with im4racin's 3 row units. I did find in my 74 row unit manual that the hoppers are designed to hold about 75 pounds of seed. I assume that's corn at 56 lbs./bu.
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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45
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