Question, On a new BX can you use 2 wheel posi drive when mowing?! Can I engage the two wheel posi and just mow ? O,r is it only for straight line situations when you need it ? Just wondering..
I don't know what "posi drive" is, but I think you're asking about the differential lock. It is only for straight line and only when you need i
Thank you,yes that is what I am referring to. Posi is both rear wheels are engaged, like a car.. That is what I thought..
If you live on hills it is almost always needed for safety....Only use 4WD when it is needed.
If you live on hills it is almost always needed for safety....
Flat or relatively flat areas, different story. Nothing flat where I live so I use 4WD all the time...and have for 20 years...no issues...not a cure all though. Did put my B2910 on its side once...about ten years ago
Henro, Having a tractor go over is not as hard as people think. Grew up in farm county upstate N.Y. been operating tractors for a long time. A second of not paying attention is all it takes. I know 4 wheel drive is nice but it can give a false sense of security. I spun a 4 wheel drive truck in a 360 one morning on a bridge. Made a complete circle. A pucker moment for sure.
Never is one of the most dangerous words in the english language and will bite you more often than not.Most types of limited slips would not play nicely with steering brakes.
Really, the advantage of limited slips vs lockers is all tied up in high-speed, high traction pavement driving that tractors never do. They could be the best option in some cases for cars, but never, as far as i can tell, the best option for a tractor (vs a locking diff).
True enough! And someone always calls me on it.Never is one of the most dangerous words in the english language and will bite you more often than not.
Take a look at big articulated machines with full time AWD. Seems to work really well for them.
Yes, they are typically (cautious weasel word) hydraulic all wheel drive. Ever try to use the steering brakes on a standard L with HSTTrue enough! And someone always calls me on it.
I think the awd on articulated loaders is hydraulic awd, as in each wheel has a hydraulic motor, and the motors might be diagonally linked, and the two circuits go through a hydraulic synchronizing thingy (basically 2 motors on a common shaft, forces the flow rate of each side to be equal). I don't know much about it. But if you diagonally cross-link the wheels each circuit has one wheel on the inside (slower during turn) and one on the outside (faster during turn) and if you make those two circuits go through a synchronizing thing (forget the term) then the sum of wheel speeds on each side has to stay equal. So it's a hydraulically linked awd system with limited slip functionality where wheels can turn different speeds for turning but they can't 'spin' much when they lose traction.
Im pretty sure big loaders, at least modern ones, don't have wheels riding a common axle with a mechanical differential in the middle. I also kind of doubt they have steering brakes!
But i drove one for like 2 minutes when i was 14, and other than that im just using my general mechanical background knowledge to make educated guesses.. could be WAY off.
No pins on the B7100. It uses two very stout rectangular dogs. Hard to shear but susceptible to wear at the corners of the dogs.When using the differential lock, you have to be gentle, there are no clutches involved, only four pins engaging to lock. So, you have to be stopped, then press on the pedal (it might not go all the way) and apply a slight amount of wheel movement in order for the pins to fall in the holes and the the pedal to go all the way and hold the pedal down while you need the lock. Release the pedal while going in almost a straight line when not needing the differential lock any longer.
Otherwise, this can happen:
Differential lock failure
Differential lock apart
Actually the vast majority of wheel loaders are transmission drive to axles with differentials. There are a number in the compact market that are hydrostatic as well as a few in the medium to large market. But usually still a hydraulic motor driving a transmission and axles. Once you get to the mining sector you can find electric wheel drive units.Yes, they are typically (cautious weasel word) hydraulic all wheel drive. Ever try to use the steering brakes on a standard L with HST
No pins on the B7100. It uses two very stout rectangular dogs. Hard to shear but susceptible to wear at the corners of the dogs.
Actually the vast majority of wheel loaders are transmission drive to axles with differentials. There are a number in the compact market that are hydrostatic as well as a few in the medium to large market. But usually still a hydraulic motor driving a transmission and axles. Once you get to the mining sector you can find electric wheel drive units.
I am sure there are some out there that do have hydraulic wheel motors but they are limited in numbers.
From my experience I have seen axles with open, torque proportioning. limited slip and locking differentials. Most are open and locking being actuated by generally hyd. oil and sometimes air.