Dumb Question

[Caryc]

I've had my 8N with a Davis loader on it for about nine years. I usually only use one wheel brake when I want to make a tight turn.

So, when you hit that brake, isn't it fighting with the power to the wheel? Or does the differential let you use that wheel brake and supply most of the power to the opposite wheel? I kind of think that's what is happening.

 

[souNdguy]

open diffy.

if one wheel don't move, and the pinion is still moving. other wheel has to move. thus stomping the right brake for a HARD right turn..

on the opposite end. if you are driving along and the right tire starts slipping.. ( mud..e tc. ).. step on it a bit to provide some resistance.. and left will keep walking.. .. poor mans diffy lock

 

[HCooke]

"thus stomping the right brake for a HARD right turn.."

Also you can use light pressure on the brake to assist steering when the front end is light because of a heavy load on the back.

 

[old]

What you are doing is pretty much the same as was done on many of the older track drive tractors and you did all the steering with brakes.

 

[souNdguy]

heck.. i've had the front end pretty much full off the ground and steered with brakes. not fun but as you point out.. very doable!

 

[BillM (OH)]

Yep - if you have ever skidded logs with an 8n, you sure do know how to steer with the brakes!

 

[Ultradog MN]

Not such a dumb question.
You would be surprised at how many people don't understand how a differential works.
Here is a great video on youtube that does a very good job of explaining it.
Hope you enjoy it.

<iframe width="420" height="315" src="//www.youtube.com/embed/kJY9SxDOTog" frameborder="0" allowfullscreen></iframe>

 

[Colin King]

Great video!

Colin, MN

 

[Caryc]

Thanks UD,

In the back of my mind, I knew one wheel could turn faster or slower than the other one.

Back in about 1960, I took two years of auto shop as did every other kid that I knew. I'm sure we sat through some film like that one, although the one you showed was a little more vintage than what we probably saw.

I never remembered or gave any thought to the low center drive from the drive shaft. Don't think I ever saw a picture of those two gears like that. Very interesting.

 

[Greg 2N (TX)]

Sweet!!!

Greg

 

[duey]

From the web.... HYPOID


Hypoid Gears


A hypoid gear is a style of spiral bevel gear whose main variance is that the mating gears' axes do not intersect. The hypoid gear is offset from the gear center, allowing unique configurations and a large diameter shaft. The teeth on a hypoid gear are helical, and the pitch surface is best described as a hyperboloid. A hypoid gear can be considered a cross between a bevel gear and a worm drive.

 

[Brian 2N Iowa]

Thanks for the video,

I think I will reference it this afternoon and show my son how the differential works. Inquiring minds want to know...and he has been inquiring.

 

[TheOldHokie]

(quoted from post at 00:10:51 01/05/14) From the web.... HYPOID


Hypoid Gears


A hypoid gear is a style of spiral bevel gear whose main variance is that the mating gears' axes do not intersect. The hypoid gear is offset from the gear center, allowing unique configurations and a large diameter shaft. The teeth on a hypoid gear are helical, and the pitch surface is best described as a hyperboloid. A hypoid gear can be considered a cross between a bevel gear and a worm drive.

I could be wrong but I don't think the N-series differential is hypoid gearing. Appears to be conventional spiral bevel design where the pinion and axle shafts are aligned.

TOH

 

[JMOR]

(quoted from post at 14:13:27 01/05/14)

(quoted from post at 00:10:51 01/05/14) From the web.... HYPOID


Hypoid Gears


A hypoid gear is a style of spiral bevel gear whose main variance is that the mating gears' axes do not intersect. The hypoid gear is offset from the gear center, allowing unique configurations and a large diameter shaft. The teeth on a hypoid gear are helical, and the pitch surface is best described as a hyperboloid. A hypoid gear can be considered a cross between a bevel gear and a worm drive.

I could be wrong but I don't think the N-series differential is hypoid gearing. Appears to be conventional spiral bevel design where the pinion and axle shafts are aligned.

TOH

could be wrong...", but I don't think so.

 

[isaacv]

yeah, likewise if one side is stuck it will spin independent of the other

 

[GVSII]

(quoted from post at 15:58:48 01/04/14) Yep - if you have ever skidded logs with an 8n, you sure do know how to steer with the brakes!

Old guy up here in NNY who farmed,had a full time job(as if farming wasen't enough)and did small scale logging in his spare time.He said he wore out half a dozen of those little Fords logging.A cousin of his told me that when he hooked on to a log and started pulling the front wheels came off the ground and didn't touch down until he hit the clutch at the landing!

 

[GVSII]

(quoted from post at 15:58:48 01/04/14) Yep - if you have ever skidded logs with an 8n, you sure do know how to steer with the brakes!

Old guy up here in NNY who farmed,had a full time job(as if farming wasen't enough)and did small scale logging in his spare time.He said he wore out half a dozen of those little Fords logging.A cousin of his told me that when he hooked on to a log and started pulling the front wheels came off the ground and didn't touch down until he hit the clutch at the landing!

 

[Caryc]

(quoted from post at 09:53:12 01/06/14)

(quoted from post at 15:58:48 01/04/14) Yep - if you have ever skidded logs with an 8n, you sure do know how to steer with the brakes!

Old guy up here in NNY who farmed,had a full time job(as if farming wasen't enough)and did small scale logging in his spare time.He said he wore out half a dozen of those little Fords logging.A cousin of his told me that when he hooked on to a log and started pulling the front wheels came off the ground and didn't touch down until he hit the clutch at the landing!

I'm surprised he grew to be an old guy. Sounds like a dangerous way to do things.

 

[GVSII]

(quoted from post at 14:04:41 01/06/14)

(quoted from post at 09:53:12 01/06/14)

(quoted from post at 15:58:48 01/04/14) Yep - if you have ever skidded logs with an 8n, you sure do know how to steer with the brakes!

Old guy up here in NNY who farmed,had a full time job(as if farming wasen't enough)and did small scale logging in his spare time.He said he wore out half a dozen of those little Fords logging.A cousin of his told me that when he hooked on to a log and started pulling the front wheels came off the ground and didn't touch down until he hit the clutch at the landing!

I'm surprised he grew to be an old guy. Sounds like a dangerous way to do things.

Why would that surprise you?He was steering with the brakes.If the front felt like it was too high both brakes went on with a little clutch.He was smarter than the tractor and QUICK.And he did live to be an old man.

 

[Caryc]

(quoted from post at 17:10:39 01/06/14)

(quoted from post at 14:04:41 01/06/14)

(quoted from post at 09:53:12 01/06/14)

(quoted from post at 15:58:48 01/04/14) Yep - if you have ever skidded logs with an 8n, you sure do know how to steer with the brakes!

Old guy up here in NNY who farmed,had a full time job(as if farming wasen't enough)and did small scale logging in his spare time.He said he wore out half a dozen of those little Fords logging.A cousin of his told me that when he hooked on to a log and started pulling the front wheels came off the ground and didn't touch down until he hit the clutch at the landing!

I'm surprised he grew to be an old guy. Sounds like a dangerous way to do things.

Why would that surprise you?He was steering with the brakes.If the front felt like it was too high both brakes went on with a little clutch.He was smarter than the tractor and QUICK.And he did live to be an old man.

I really don't care how you try to justify it. Driving a tractor with the front wheels off the ground is dangerous.

There are lots of guys that thought they were smarter than the tractor and could never get hurt.

If you really want to be safe around a tractor you should first be able to realize when you are doing something that's not safe. Lot's of people will try to justify it with "Well, I'll only do it this one time". That one time may be all it takes for you to get seriously hurt or killed.

And just because that guy was old doesn't make him smart. Your definition of safe leaves a lot to be desired.

If that old guy was so smart, why didn't he think about adding weight to the front of that tractor? I guess he wasn't smart enough to think of that.

 

[jon]

If that old guy was so smart, why didn't he think about adding weight to the front of that tractor? I guess he wasn't smart enough to think of that.

You're missing the reason for doing what he did. Your traction improves dramatically with the body of the tractor at a certain pitch. Loggers have been doing this for as long as there's been tractors. Some use a type of [i:a1884ad74b]wheelie bar[/i:a1884ad74b] but a good operator doesn't need one.

 

[Caryc]

(quoted from post at 19:34:48 01/06/14)

If that old guy was so smart, why didn't he think about adding weight to the front of that tractor? I guess he wasn't smart enough to think of that.

You're missing the reason for doing what he did. Your traction improves dramatically with the body of the tractor at a certain pitch. Loggers have been doing this for as long as there's been tractors. Some use a type of [i:716a2afe60]wheelie bar[/i:716a2afe60] but a good operator doesn't need one.

There is no reason for doing something that's not safe. Just your statement that some use a wheelie bar indicates that it is an unsafe practice.

Why not just use the correct machine for the job you're doing? If you want to use the wrong machine and take your chances, that's your prerogative. Just don't try to justify it as being safe. Just because someone has been doing it for years does not mean it's safe. Has no one in the world ever been killed because of flipping a tractor over? I don't think you can answer no to that.