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Why are narrow-front tires angled?

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RobertN

11-21-2000 17:21:52

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Since I got my '41 A, I have collected a few 1/16 Ertl's. I just received a "H".

My wife asked why the tires on the narrow front are angled in at the bottom. I have absolutely no idea why...

Does anybody know why this is? It seems all the manufacturers did this.

Curious...

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Bill

11-23-2000 06:13:23

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

Bob
one of the main reasons for the front wheels to be tilted is so the tractor will turn sharper, this is one of the reasons the grader has wheel lean.

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T_Bone....I Got It!!!

11-23-2000 07:19:34

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Re: Re: Why are narrow-front tires angled? in reply to Bill, 11-23-2000 06:13:23

Cause there made that way :)

T_Bone

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Dick B

11-22-2000 13:34:58

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

It is not true about the F series front wheels
being straight up and down - they do have camber and castor built in. Just take a look at the parts catalog drawings. If you can't find a parts catalog find an F-20 or other F series tractor and look at the front wheels. The gap between the front tires is more narrow at the bottom - this provides camber. The spindles are also mounted
slightly behind the vertical post C/L - this provides caster. Both camber and caster are needed to provide steering ease and control. Adios, Dick B

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11-22-2000 16:40:24

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Re: Re: Why are narrow-front tires angled? in reply to Dick B, 11-22-2000 13:34:58

My 14 has angled wheels,but when I look at some 20s they do appear as they are straight until I get a good close look at them,They are angled but not much.

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Dick B

11-23-2000 05:24:28

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Re: Re: Re: Why are narrow-front tires angled? in reply to RB, 11-22-2000 16:40:24

I have 600x16 tires on the front of my F-20. At the bottom the gap between the tires is about 5", at the top the gap is about 8", wish I had my trig tables handy - I could tell you what the angle is. I'd guess about 2 or 3 degrees to a side which means 4 or 6 degres total splay. Adios, Dick B.

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Dick B

11-23-2000 05:23:44

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Re: Re: Re: Why are narrow-front tires angled? in reply to RB, 11-22-2000 16:40:24

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Ron

11-22-2000 13:30:56

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

All good answers below. Just wanted to add one more. I think they look much better too. Standard tread tractors with angled front wheels also look better than those with straight wheels.

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Dick

11-26-2000 17:48:19

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Re: Re: Why are narrow-front tires angled? in reply to Ron, 11-22-2000 13:30:56

If you look real close, those tires follow the conture of the pedistal of the narrow front end. It helps in control of steering also. My 2 cents

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john d - All that and more!

11-22-2000 13:14:35

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

Echo the ideas presented in the posts below....and want to add another. When the bottom portion of the front tires is as close together as possible, the tractor simply STEERS EASIER. This is especially true when trying to turn the steering wheel when the tractor isn't moving! If you want a quick lesson in this, and the afore-mentioned tendency for wider-set wheels to take the steering wheel out of your hands when hitting a bump, furrow, etc., just take the front rims off an H or M, and mount them on the other side of the cast rings! They're made so you can get three different spacings, but once you try it you'll see why 99.9% of them are set as close together as possible!
I've got a '43 H which my Dad bought new, and on steel. It's on rubber now, and has less angle to the front wheels than my M or SM, or my neighbor's H. I asked Dad if this was due to all the years he used it with a loader, and he said he thought it had less angle than the others when he got it. It's his opinion that the axle stub angle may have been a little less on the steel-wheel tractors.

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Ace Schrunk

11-22-2000 10:30:03

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

Reason for angle on front wheels, for better steering in the field. The F 20 was straight and in the field if one was not careful to keep thump from around steering wheel you will get a sore one real quick. Straight front wheels will take steering wheel right out of your hand. Did you know IHC turned down the rol-O-matic before jd bought it from two farmer in Minnesota

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Haas

11-22-2000 10:28:33

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

I think two reasons: 1) To give more "bite" for steering. 2) So mud and dirt, stones, etc will kick out as wheels rotate.

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John C.

11-22-2000 07:51:15

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

JLE mentioned caster and camber. On a car or truck that helps to keep the vehicle going in a straight line, and I imagine it would help a tractor do the same in road gear on a hard surface, in addition to all the other things mentioned before..... ..... ..... .an interesting discussion..... ..... ..

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Pete in PA

11-22-2000 07:11:10

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

Hi,

I read in one of the Farmall books (can't remember
which one, sorry) that it initially had more to do
with being able to steer the tractor in the field,
particularly if the NFE got into a rut or a furrow
- the dual front wheels, angled towards each
other, helped the tractor "climb" out of ruts
rather than getting bogged down in them... Makes
sense on paper...

Pete

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Bergen

11-21-2000 20:39:21

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

I have been told that it also helped with steering while plowing. With the F series, the wheels were straight up and down and with one of the rear wheels in the furrow, most of the pressure on the front end came to rest on one of the front wheels. The Angled front wheels fixed this.

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JLE

11-21-2000 19:38:34

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

Camber, and caster come to mind, if you look they are tilted back a little also, at one time a company made a shim to give the H & M more caster, claiming that they would steer easier. If you don't belive, try bolting the pedestal to the bolster backbards.

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john d

11-22-2000 13:16:11

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Re: Re: Why are narrow-front tires angled? in reply to JLE, 11-21-2000 19:38:34

I've got a shim of that type in my H. It DOES help!

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Jon

11-21-2000 18:37:13

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

Doesn't this help the tire "bite" when turning? If you look, most WF tractors have the tires angled a little bit also.

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To: Jon

11-21-2000 19:42:56

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Re: Re: Why are narrow-front tires angled? in reply to Jon, 11-21-2000 18:37:13

Hi Jon: I suppose steering had an impact on the design as there always seems to be several items that have to be considered. My blood pressure went up just remembering fighting that &*# narrow front as conditions started getting muddy even tho that's many many years ago now. So I guess I feel a little strong about narrow fronts plugging up. Some even set the wheel wider for mud with those adjustable front rims but it steered a bit harder then..and that didn't work as well with some mounted pickers.. harvey

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H MN

11-21-2000 18:02:18

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

RobertN: You were talking about the tops of the tire being tipped out to side compared to the bottom..... I assumed? h mn

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RobertN

11-22-2000 10:16:42

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Re: Re: Why are narrow-front tires angled? in reply to H MN, 11-21-2000 18:02:18

Yes, the tops of the tires being tilted out/ bottom being tilted in.
Thanks!

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H MN

11-21-2000 17:58:40

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

RobertN: This was asked several months ago and generated various asnwers. If you had to go over muddy ground, such as picking corn in the late fall, you will be grateful that the tipped out at the top front tire shed mud better as the gap opens up in back as they rotate. I hope a few old timers who had to work in muddy fields in late fall will add to this. The narrow front was great for row crops ..untill it got muddy. Many would also add a mud scrapper on the back side of the dual narrow fronts. Mud was a real problem for narrow fronts.. harvey

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joe in Ct

11-21-2000 17:55:38

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Re: Why are narrow-front tires angled? in reply to RobertN, 11-21-2000 17:21:52

they were that way to straddle the rows they were goig down and not to brush the plants while passing. here that was done for cultivating tobacco. further west goin down the corn rows.

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