(quoted from post at 16:47:52 03/01/17) Has anybody try to add power steering to there N tractor with a 12 volt system?
Kirk
(quoted from post at 09:01:32 03/01/17)(quoted from post at 16:47:52 03/01/17) Has anybody try to add power steering to there N tractor with a 12 volt system?
Kirk
http://forums.yesterdaystractors.co...&postdays=0&postorder=asc&start=0
(quoted from post at 09:25:24 03/01/17) Thanks Dan
(quoted from post at 11:46:44 03/01/17) i stopped to look at a roadside tractor that used hyd power steering cyls, but used one of those electric ready-power units to power it. It was a hair klunky.. but DID work.powerfull too. he sheared a key at one of his spindles.
how much do those eps systems go for?
(quoted from post at 11:46:44 03/01/17) i stopped to look at a roadside tractor that used hyd power steering cyls, but used one of those electric ready-power units to power it. It was a hair klunky.. but DID work.powerfull too. he sheared a key at one of his spindles.
how much do those eps systems go for?
(quoted from post at 12:33:07 03/01/17) nice.
i assume the shafts are separate? or no? IE.. is one an input shaft, and the other output, or is it a straight thru ordeal with
either a plunger or optical sensor to sense direction?
(quoted from post at 16:18:17 03/01/17) http://www.autoserviceprofessional.com/article/92544/electronic-power-steering
(quoted from post at 11:45:58 03/01/17) Yes, I've seen the ones that go into a fail safe mode and I control box is needed..
Kirk
(quoted from post at 03:32:02 03/02/17)(quoted from post at 16:18:17 03/01/17) http://www.autoserviceprofessional.com/article/92544/electronic-power-steering
Interesting. My little G2460 Kubota lawn tractor is equipped with electronic steering assist and every now and then the steering turning one direction gets a lot harder than when turning the other. The manual has a description (the details of which I can't recall at the moment) of how to reset the assist level. I guess that is the torque sensor zero point calibration the article talks about....
TOH
(quoted from post at 09:04:47 03/02/17)(quoted from post at 03:32:02 03/02/17)(quoted from post at 16:18:17 03/01/17) http://www.autoserviceprofessional.com/article/92544/electronic-power-steering
Interesting. My little G2460 Kubota lawn tractor is equipped with electronic steering assist and every now and then the steering turning one direction gets a lot harder than when turning the other. The manual has a description (the details of which I can't recall at the moment) of how to reset the assist level. I guess that is the torque sensor zero point calibration the article talks about....
TOH
Probably so I have not had to calibrate one YET but have replaced a few on a hydraulic set up that's called a steering wheel position sensor are something in that order. Just what we need some sort of computerized junk on a damm mower![]()
(quoted from post at 18:53:42 03/02/17) Once you've had power steering you will never go back to manual.
I have said this before here that if I had to choose between PS and Live PTO I would take the PS.
One thing that has not been brought up in this discussion (or at least I didn't see it) is that a unit like that does all it's work BEHIND the sector gears and steering box.
Most power assist systems do their work in FRONT of the sector gears/steering box.
So though the unit that is shown would make your steering much easier it's effect on your steerimg box would be like having a 300 lb man turning the steering wheel. If you put that unit on a loader tractor you would wear out your steering box rather quickly. Maybe even break it.
(quoted from post at 23:21:14 03/02/17)
Anyone care to guess how much mechanical advantage that electric unit gives you? Torque amplification or whatever you want to call it?
25% increase? 40%? More? Anyone got specs?
(quoted from post at 05:13:08 03/03/17)(quoted from post at 23:21:14 03/02/17)
Anyone care to guess how much mechanical advantage that electric unit gives you? Torque amplification or whatever you want to call it?
25% increase? 40%? More? Anyone got specs?
Precise output specifications for the motors are hard to find - especially for the now old-school column assist designs. And the EPS systems are state of the art designs that provide variable assist based on operating conditions and the input from the steering wheel. In an OEM environment the Power Steering Control Module dynamically varies the motor output based on road speed, column input, and a torque map.
But in the case of retrofitting one of the Saturn units we have been discussing the boost level is set with a knob on the bread-boarded control unit and once set remains linear with column input. Given that you can easily do a seat of the pants measurement/calibration.
Park the tractor on a smooth hard surface. With the EPS switched off measure the torque needed at the rim of the steering wheel in order to turn the front wheels. Now set the EPS control to reduce that torque by 50%. The EPS is matching your input. If you dial up 25% less effort at the wheel the EPS is outputting 3X your input. Obviously there is an ultimate stall point on the EPS motor which I suspect you can determine with a slightly more "sophisticated" variation on this test ;-)
TOH
Notice my hydraulic pump. Gear type with filter - also like your 335.
3000 has piston pump.
3000/3600 are almost identical tractors. About 98% of the parts will interchange.
(quoted from post at 07:37:18 03/03/17)Notice my hydraulic pump. Gear type with filter - also like your 335.
3000 has piston pump.
3000/3600 are almost identical tractors. About 98% of the parts will interchange.
I would assume you would need the pump and steel lines to swap out a piston pump ? Any thing else ? That's a great set up with the filter .
(quoted from post at 09:15:23 03/03/17)(quoted from post at 05:13:08 03/03/17)(quoted from post at 23:21:14 03/02/17)
Anyone care to guess how much mechanical advantage that electric unit gives you? Torque amplification or whatever you want to call it?
25% increase? 40%? More? Anyone got specs?
Precise output specifications for the motors are hard to find - especially for the now old-school column assist designs. And the EPS systems are state of the art designs that provide variable assist based on operating conditions and the input from the steering wheel. In an OEM environment the Power Steering Control Module dynamically varies the motor output based on road speed, column input, and a torque map.
But in the case of retrofitting one of the Saturn units we have been discussing the boost level is set with a knob on the bread-boarded control unit and once set remains linear with column input. Given that you can easily do a seat of the pants measurement/calibration.
Park the tractor on a smooth hard surface. With the EPS switched off measure the torque needed at the rim of the steering wheel in order to turn the front wheels. Now set the EPS control to reduce that torque by 50%. The EPS is matching your input. If you dial up 25% less effort at the wheel the EPS is outputting 3X your input. Obviously there is an ultimate stall point on the EPS motor which I suspect you can determine with a slightly more "sophisticated" variation on this test ;-)
TOH
Scenario One:
Fellow wants an easier steering on his unballasted tractor for mowing.
The electric ps unit would make steering easier.
Scenario Two:
8N with a loader bucket full of dirt in soft soil.
Gorilla in the seat is still going to manhandle the wheel - even though your elec ps is multiplying his input to the sectors? I understand there is likely a stall point on the gizmo. But it would be much higher torque than a guy would normally/generally/prudently apply to the wheel.
You need your power assist in front of the sectors. Not behind them. Otherwise you get a worn out and/or broken box.
(quoted from post at 11:12:35 03/03/17) Sorry TOH.
You are compounding the torque that is
applied to those sectors not only under
loader conditions. You are doing it
anytime the tractor is not on flat hard
dirt where the steering is one hand easy.
Double the work the sectors are doing
halves the life. It's that simple.
But suit yourself.
(quoted from post at 19:51:29 03/03/17)
If a pre sector electric unit like we're
discussing was viable it would be on the
market. But it is not viable.
Click here
(quoted from post at 23:21:14 03/02/17)
Anyone care to guess how much mechanical advantage that electric unit gives you? Torque amplification or whatever you want to call it?
25% increase? 40%? More? Anyone got specs?
(quoted from post at 23:12:11 03/03/17)
Well, That may be one way to design stuff.
Another way is to do it like Ford or
Caterpillar or Toyota do it which is to
input power into the proper places so bubba
doesn't break it due to a poor design.
(quoted from post at 09:29:36 03/04/17) You could write safety warnings for new
equipment.
The hydraulic power assist system Ford used
on the small utilities starting in 1956 or
so on the Hundreds, Priors and Thousands was
basically unchanged till they came out with
the 10 Series tractors in the early/mid 80s.
The lower portion of the ps box was
identical to the manual box - same lower
casting, same ball nut (different shaft)
exact same sector gears, bushings, steering
arms, etc.
I have been into many of these boxes and
have found that the lower parts in the ps
models are significantly less worn than
their manual counterparts.
Because those lower parts were doing very
little work. The hydraulics were doing it
all.
The design was a good one. Not perfect, but
good enough that with zero maintenance, the
ps on a few hundred K of those tractors are
still working flawlessly on these 40, 50, 60
year old machines - despite Bubba and his
ilk.
Ford engineers knew WHERE to input the power
assist - for good results, excellent
reliability and greater longevity.
h Oh.........sounds like that little Kubby and Ford steering boxes just aren't as "Ford Tough" as IH Farmall! :wink:(quoted from post at 10:41:33 03/04/17)(quoted from post at 09:29:36 03/04/17) You could write safety warnings for new
equipment.
The hydraulic power assist system Ford used
on the small utilities starting in 1956 or
so on the Hundreds, Priors and Thousands was
basically unchanged till they came out with
the 10 Series tractors in the early/mid 80s.
The lower portion of the ps box was
identical to the manual box - same lower
casting, same ball nut (different shaft)
exact same sector gears, bushings, steering
arms, etc.
I have been into many of these boxes and
have found that the lower parts in the ps
models are significantly less worn than
their manual counterparts.
Because those lower parts were doing very
little work. The hydraulics were doing it
all.
The design was a good one. Not perfect, but
good enough that with zero maintenance, the
ps on a few hundred K of those tractors are
still working flawlessly on these 40, 50, 60
year old machines - despite Bubba and his
ilk.
Ford engineers knew WHERE to input the power
assist - for good results, excellent
reliability and greater longevity.
I've got what I consider to be an antique Kubota (1982/3 compact utility tractor) with a small loader and manual steering. The loader has a published load rating of 500# but I know for a fact :roll: it will get a 800-900 pound rock a couple feet off the ground before it stalls. I also know for a fact that turning the steering lock to lock with even the rated load in the bucket and the tractor sitting still is a death sentence for the steering ball nut and screw. It's been 20+ years since the first Bubba induced steering failure moving those rocks and there hasn't been a second. Bubba is a 90# weakling but he now knows that even without PS he is strong enough to damage the manual steering on his little tractor if he doesn't exercise some common sense. Bubba now puts the tractor in motion before trying to steer with heavy loads in the bucket and he gets the full benefit of the tractor's capabilities and doesn't inflict unnecessary damage to the machine.
If Bubba ever stumbled upon one of the never seen outside the parts book OEM power steering kits for his tractor he would probably put it on. Not because an aging Bubba now needs help steering the machine but because it would take some of the strain off the steering gear and he wouldn't have to worry about having a "senior moment". Bubba has no interest in adding an inexpensive and readily available Saturn EPS unit to the tractor because it already steers acceptably, EPS wouldn't do anything to protect the already over-taxed manual steering box, and even at his advanced age Bubba doesn't need any help breaking the steering unit if he wants to.
TOH
(quoted from post at 20:55:48 03/04/17)h Oh.........sounds like that little Kubby and Ford steering boxes just aren't as "Ford Tough" as IH Farmall! :wink:(quoted from post at 10:41:33 03/04/17)(quoted from post at 09:29:36 03/04/17) You could write safety warnings for new
equipment.
The hydraulic power assist system Ford used
on the small utilities starting in 1956 or
so on the Hundreds, Priors and Thousands was
basically unchanged till they came out with
the 10 Series tractors in the early/mid 80s.
The lower portion of the ps box was
identical to the manual box - same lower
casting, same ball nut (different shaft)
exact same sector gears, bushings, steering
arms, etc.
I have been into many of these boxes and
have found that the lower parts in the ps
models are significantly less worn than
their manual counterparts.
Because those lower parts were doing very
little work. The hydraulics were doing it
all.
The design was a good one. Not perfect, but
good enough that with zero maintenance, the
ps on a few hundred K of those tractors are
still working flawlessly on these 40, 50, 60
year old machines - despite Bubba and his
ilk.
Ford engineers knew WHERE to input the power
assist - for good results, excellent
reliability and greater longevity.
I've got what I consider to be an antique Kubota (1982/3 compact utility tractor) with a small loader and manual steering. The loader has a published load rating of 500# but I know for a fact :roll: it will get a 800-900 pound rock a couple feet off the ground before it stalls. I also know for a fact that turning the steering lock to lock with even the rated load in the bucket and the tractor sitting still is a death sentence for the steering ball nut and screw. It's been 20+ years since the first Bubba induced steering failure moving those rocks and there hasn't been a second. Bubba is a 90# weakling but he now knows that even without PS he is strong enough to damage the manual steering on his little tractor if he doesn't exercise some common sense. Bubba now puts the tractor in motion before trying to steer with heavy loads in the bucket and he gets the full benefit of the tractor's capabilities and doesn't inflict unnecessary damage to the machine.
If Bubba ever stumbled upon one of the never seen outside the parts book OEM power steering kits for his tractor he would probably put it on. Not because an aging Bubba now needs help steering the machine but because it would take some of the strain off the steering gear and he wouldn't have to worry about having a "senior moment". Bubba has no interest in adding an inexpensive and readily available Saturn EPS unit to the tractor because it already steers acceptably, EPS wouldn't do anything to protect the already over-taxed manual steering box, and even at his advanced age Bubba doesn't need any help breaking the steering unit if he wants to.
TOH
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