JD roll-o-matic front ends

Charlie M

Well-known Member
Just watched the promo in the thread below and this is one of the features they promoted. Were they worth it. Did anybody else come out with something similar. We had a neighbor with a 720 that had constant problems with that front end and finally traded it for anther brand.
 
It was offered to IH first, they decided it was interesting but not so valuable that customers would pay for it. JD made the plunge. No real problems happened with our neighbors JD tractors so equipped. Jim
 
The idea came from Adolph Ronning, who invented the Ronnng Ensilage harvester that was built by IHC. He was an extremely prolific inventor with over 300 patents in Agriculture and road building equipment.
 
I replaced a bushing in the pivot part of the rollomatic on one side of my 50. I didn't know it was worn until I dis-assembled it for painting. Many years ago I replaced one of the pivot arms on the same tractor. The original had been bent, and it would wobble on a hard surfaced road. That fixed the wobble. I've been around a bunch of them and other than what I mentioned above, they seem to be trouble free.
 
The only time I had a problem with roll o matic was with the loader tractor. I was backing off the dirt and into the raised feed floor with the front wheels cramped to the left and the loader bucket full. The left front wheel climbed up onto the feed floor but the right front wheel arm snapped off. This was extreme abuse. I did replace the arm but not long afterward I replaced the roll o matic with a wide front.
 

No problems with them here . Somebody is either an equipment abuser and does not know how to repair equipment . Or they are full of BS .
The roll o matic rides smooth compared to how your head bobs forwards and backwards on a single front wheel on a two wheel solid narrow front .
 

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Ronning was from Boyd, Mn. Just a few miles down the road from here. I saw an IH with the roll-o-matic on display at the county fair several years ago. It had the history of how IH turned it down. I believe it was on a A or B Farmall.
 
I remember disking plowed ground for my future father-in-law with his NF Minneapolis-Moline. He warned me to not put my thumbs through the steering wheel - it would break your thumbs off when the wheels caught on a ridge. That thing would hit the stops so hard that you were sure that it had broken something. Contrast that to a rollomatic front - you can drive at an angle across plowed ground and the steering wheel gently rocks right and left with your hands off of the steering wheel. The MM was a darn good tractor, but the steering was not well designed.
 
Broke two of the heavy duty 3020 version. Dropped the front end about 3 feet with mounted chisel plow and tried to lift it when when front came up instead of chisel. Mistake was pushing in clutch.
Second time was hitting a sharp ditch under the snow.
Still like them for the ride!
 
My only complaint about rollomatic fronts is that you have to have a big stack of blocks to run up on in order to unbolt a front wheel. The non-rollo's only require a couple of 2X6's to get a wheel off.

Somewhere in my memories I remember an old JD that we once owned that would rub the top of the tire on the frame when I ran it on blocks to change a flat. I have studied the situation, and the only way that would happen is if one of the stops was broken off. You know how it is - when you have a flat with hay on the ground, you don't take time to look things over real well. That old tractor has been gone for at least fifty years.
 
"[b:654c4848f0][i:654c4848f0]Were they worth it[/i:654c4848f0][/b:654c4848f0]"

Yes, especially for making tight turns.

Power steering makes them even better.

Used a 48A and 56 Model 70 to cut hay.

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My mom's uncle had a 3020 with the roll-o-matic. He used a 4 row mounted cultivator on it. I think I remember him talking about having to lock the front end when using it to cultivate?
 

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