Specifically, toe-in tends to pull the tractor out of a turn. Without toe-in the tractor would try to go into a turn every time it hit a bump so you'd be constantly fighting it to go straight ahead.
 
I know the reason - but do often wonder how much of a difference it makes.

Wonder if anybody here's driven one of the single front tire models? Do they wander all over the place? Is there a big difference?
 
I just checked on my Super C. It has a narrow front but there is no toe-in on the wheels.

Are you really asking about toe-in or perhaps you mean camber. Toe-in is where the front of the wheels are closer together than they are at the rear. Camber is where they are closer together at the bottom than they are at the top. Caster refers to the center of contact of the wheels to the ground being behind the center of the vertical steering shaft.
 
dstates, it wasn't intended to be "funny", and since you used the plural "posts", when did I do another funny one? As far as the term toe in, I didn't correct him because I knew what he meant. Regardless of the official definition of camber, IH and others did the narrow front that way to assist in steering. I haven't thought of it wandering around if the wheels were straight up and down. I've always though that if they weren't cambered they would be a little like a WF and harder to steer. So, regardless of the terminology and all the unneccesary words, I stand by my original answer.
 
CNKS... the plural of "posts" was from your two posts on this thread. I just get tired of people throwing out quick answers like "steers easier' that doesn't really tell the guy much. I don't have the answers and am new to antique tractors and I appreciate all of the info you have shared in so many other threads...
 
(quoted from post at 08:33:39 07/23/12) Actually, CNKS... toe in would make it drive straight easier... Your "funny" posts don't help anyone...
so how did your post help any thing???????????????
 
(quoted from post at 04:32:31 07/24/12) I admit it wasn't one of my best moments... I apologize to CNKS... Can I blame the heat?

You don't need to apologize. To me the narrow front provides flotation, a single front and a WF for that matter can sink in loose soil, but having used all three fronts extensively that usually is not a problem. Regardless of all the other answers (that I'm not going to challenge), I have always thought that the camber of those wheels made the tractor easier to turn, particularly when stopped or moving very slowly, also when locking one rear wheel and turning it in its tracks. All that is included in my "easier to steer", I should have been more specific. I sometimes give short answers because for that type question there are going to be several people who go into more detail, so I don't spend the time. In this case I spent it defending my answer, which took more time.
 
(quoted from post at 21:51:03 07/22/12) could someone please explain the reason for the narrow frontends toe-in?

steers easier (especially on hard ground -less rubber contact)
tracks better at all speeds, especially high
and main reason, so the tires fit between narrow crop rows better
 
I don't know about narrow front vs single front, but the regulars had no camber and no toe and they didn't turn well. That's why they had a cable from the steering to the brakes, to brake automatically to help it turn when you turned it all the way to the side.
 
So many answers that I might as well add my two cents. Caster keeps you going straight ahead and helps you return to straight ahead after a turn. Camber and king pin inclination directs the force of pushing that wheel to nearer the inside bearing, and largest heaviest portion of the spindle and toe in amount is based on keeping side scuffing of tire to a minimum. The whole ball of wax is referred to as front end geometry. That inside tire has to make a tighter turn when making a corner so the steering arms are at a specific length and angle in relation to the center pivot arm. When you install the tapered plate on a narrow front farmall, it will stay straight ahead easier but slightly harder to turn it.
 

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