rutwad
Platinum Member
- Joined
- Jul 28, 2006
- Messages
- 815
- Location
- Alabama
- Tractor
- Massey Ferguson 5465, Kubota M5040, Farmall H (2), Minneapolis Moline R, Case 530CK, Cat 416C
Tommy, you are probably right. It may not say that you must go straight when the diff. is locked. And you don't have to. You should only need to lock it in the very worst conditions, otherwise 4wd should do. So if you are in a terrible situation and have the front diff. locked, then the tires are probably already spinning and the distance travelled does not matter.
Where you will find a problem is locking the front diff. with good traction, unless you are going straight. Why? because going straight all the tires are travelling the same distance whether locked or not. But say you are on concrete and have the front diff. locked. Being locked caused all tires to turn exactly the same. So if you made a complet circle, your outside front tire has to travel about 25 more feet than the inside front tire. So with the front tires travelling the same distance, something has to happen to compensate for the extra 25'. In mud or other soft conditions, traction is the weakest link, so the inside tire will spin. On concrete, you may be the weekest link trying to hold the steering wheel turned. But if you are not, then you better hope the traction breaks before the axle does. SOMETHING has to give.
Where you will find a problem is locking the front diff. with good traction, unless you are going straight. Why? because going straight all the tires are travelling the same distance whether locked or not. But say you are on concrete and have the front diff. locked. Being locked caused all tires to turn exactly the same. So if you made a complet circle, your outside front tire has to travel about 25 more feet than the inside front tire. So with the front tires travelling the same distance, something has to happen to compensate for the extra 25'. In mud or other soft conditions, traction is the weakest link, so the inside tire will spin. On concrete, you may be the weekest link trying to hold the steering wheel turned. But if you are not, then you better hope the traction breaks before the axle does. SOMETHING has to give.