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Hydraulic Steering – Principles of Operation (1956) [video]

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Re: Hydraulic Steering – Principles of Operation (1956) [video]

#11

Post by jetrink »

bramhaag wrote: post #8

Similar videos about cars: Chevrolet Suspension (1938): https://www.youtube.com/watch?v=ej7CRAIGXow How Differential Steering Works (1937): https://www.youtube.com/watch?v=yYAw79386WI How A Transmission Works (1936): https://www.youtube.com/watch?v=JOLtS4VUcvQ And as a bonus, an explanation about transistors from 1953: https://www.youtube.com/watch?v=V9xUQWo4vN0

My favorite old explainer video, telephone switching (1951): https://youtu.be/xZePwin92cI

About the Strowager Switch, which was invented by an undertaker who was fed up with the local telephone operators whom he suspected of diverting phone calls to his competitor.

Re: Hydraulic Steering – Principles of Operation (1956) [video]

#12

Post by calvinmorrison »

genter wrote: post #7
kube-system wrote: post #5

Earlier quoted context omitted.

> Also: this is not how modern power steering systems work. Yes, most hydraulic systems today have been replaced by electric power steering, which uses electronic sensors to determine how much assist to apply via an electric motor. Mechanically, it is simple and very low maintenance.

Well, even before electric power steering became popular, rack and pinion steering was/is used in almost all passenger vehicles. The only vehicles that I can think of that use a steering gear and pitman arm like this video are 1 ton Ford/Chevy/Dodge and the Jeep Wrangler.

Doesn't the XJ have a steering box as well?

Re: Hydraulic Steering – Principles of Operation (1956) [video]

#13

Post by mauvehaus »

genter wrote: post #7
kube-system wrote: post #5

Earlier quoted context omitted.

> Also: this is not how modern power steering systems work. Yes, most hydraulic systems today have been replaced by electric power steering, which uses electronic sensors to determine how much assist to apply via an electric motor. Mechanically, it is simple and very low maintenance.

Well, even before electric power steering became popular, rack and pinion steering was/is used in almost all passenger vehicles. The only vehicles that I can think of that use a steering gear and pitman arm like this video are 1 ton Ford/Chevy/Dodge and the Jeep Wrangler.

I thought recirculating ball[0] was commonly used in most passenger vehicles, and rack and pinion was more common in sports cars.

[0] https://en.m.wikipedia.org/wiki/Recirculating_ball

Re: Hydraulic Steering – Principles of Operation (1956) [video]

#14

Post by serf »

creeble wrote: post #6

More like "hydraulic power-assist steering" in modern terms. With modern "hydraulic steering" it tends to imply no mechanical coupling between the steering wheel and the movement of the wheels/rudder/motor. A hydraulic leak or pressure failure therefore causes catastrophic loss of steering.

absolutely; this is a power assist system.

actual hydraulic steering is common on boats, however. [0]

as stated , systems like this can fail catastrophically and are not often used on things like land vehicles; boats often have a fail-safe in that the rudder/motor will have a manual 'override' in the form of a manual tiller 'socket' for a wrench or emergency tiller that stays out of the water until needed.

[0]: https://www.youtube.com/watch?v=9yO4MBtk3gI

Re: Hydraulic Steering – Principles of Operation (1956) [video]

#15

Post by serf »

mauvehaus wrote: post #13
genter wrote: post #7

Earlier quoted context omitted.

Well, even before electric power steering became popular, rack and pinion steering was/is used in almost all passenger vehicles. The only vehicles that I can think of that use a steering gear and pitman arm like this video are 1 ton Ford/Chevy/Dodge and the Jeep Wrangler.

I thought recirculating ball[0] was commonly used in most passenger vehicles, and rack and pinion was more common in sports cars. [0] https://en.m.wikipedia.org/wiki/Recirculating_ball

rack and pinion has been the standard for nearly all smaller passenger vehicles since at least the early 90s.

you can find things like that or like pitman arms on larger/industrial vehicles fairly commonly, though.

to your point, however, yes -- sports cars were the first ones to popularize the method. Rack and pinions tend to feel less 'sloppy' , especially after some use.

The idea stuck around in the industry though because it results in less customer complaints and requires less finesse from the mechanic during install/maintenance.

tuning a 'steering box' is a lost art relegated to hot-rod folks at this point.

Re: Hydraulic Steering – Principles of Operation (1956) [video]

#16

Post by genter »

calvinmorrison wrote: post #12
genter wrote: post #7

Earlier quoted context omitted.

Well, even before electric power steering became popular, rack and pinion steering was/is used in almost all passenger vehicles. The only vehicles that I can think of that use a steering gear and pitman arm like this video are 1 ton Ford/Chevy/Dodge and the Jeep Wrangler.

Doesn't the XJ have a steering box as well?

I was only looking at vehicles from this millennia. 80 series Land Cruiser and 4wd Toyota trucks from the early 90's had a steering gear too, and I'm sure some others that I don't care about.

Re: Hydraulic Steering – Principles of Operation (1956) [video]

#17

Post by serf »

kube-system wrote: post #5
jeffrallen wrote: post #3

The secret is in the spline! Also: this is not how modern power steering systems work.

> Also: this is not how modern power steering systems work. Yes, most hydraulic systems today have been replaced by electric power steering, which uses electronic sensors to determine how much assist to apply via an electric motor. Mechanically, it is simple and very low maintenance.

>Yes, most hydraulic systems today have been replaced by electric power steering, which uses electronic sensors to determine how much assist to apply via an electric motor.

one small nit to pick

many modern electric power steering systems are still hydraulic by nature. It's sometimes the case that the electric motor is driving fluid to enact the resistance change. Many cars that use Bosch electronics/driving-aids still work this way, electro-hydraulic pumps in a feedback loop with pressure sensors/steering angle sensors/IMUs/vehicle dynamics sensors (speed/angle/yaw/etc).

That said, fluid-less electronic-exclusive systems now exist and are in common-use, so you're not wrong at all -- just pointing out that there are many ways to skin that cat.

Re: Hydraulic Steering – Principles of Operation (1956) [video]

#18

Post by tzs »

bramhaag wrote: post #8

Similar videos about cars: Chevrolet Suspension (1938): https://www.youtube.com/watch?v=ej7CRAIGXow How Differential Steering Works (1937): https://www.youtube.com/watch?v=yYAw79386WI How A Transmission Works (1936): https://www.youtube.com/watch?v=JOLtS4VUcvQ And as a bonus, an explanation about transistors from 1953: https://www.youtube.com/watch?v=V9xUQWo4vN0

> And as a bonus, an explanation about transistors from 1953

And here is a 1959 video from the same source about wave behavior [1].

It covers reflection from open and closed ends, superposition, standing waves and resonance, impedance mismatching, and tapered-section transformers all in a way that makes it really easy to understand.

[1] https://www.youtube.com/watch?v=DovunOxlY1k

Re: Hydraulic Steering – Principles of Operation (1956) [video]

#19

Post by mauvehaus »

serf wrote: post #15
mauvehaus wrote: post #13

Earlier quoted context omitted.

I thought recirculating ball[0] was commonly used in most passenger vehicles, and rack and pinion was more common in sports cars. [0] https://en.m.wikipedia.org/wiki/Recirculating_ball

rack and pinion has been the standard for nearly all smaller passenger vehicles since at least the early 90s. you can find things like that or like pitman arms on larger/industrial vehicles fairly commonly, though. to your point, however, yes -- sports cars were the first ones to popularize the method. Rack and pinions tend to feel less 'sloppy' , especially after some use. The idea stuck around in the industry thoug…

So was recirculating ball a halfway point between worm and sector and rack and pinion then?

We have a 1947 Willys CJ-2A, which I believe is worm and sector, though we haven't gotten into the steering yet because there are so many other things wrong with it. Including, it seems, the formerly working brakes. I discovered they had crapped out as I was backing up near a bunch of formerly neatly stacked cinder blocks.

Re: Hydraulic Steering – Principles of Operation (1956) [video]

#20

Post by Daneel_ »

mauvehaus wrote: post #13
genter wrote: post #7

Earlier quoted context omitted.

Well, even before electric power steering became popular, rack and pinion steering was/is used in almost all passenger vehicles. The only vehicles that I can think of that use a steering gear and pitman arm like this video are 1 ton Ford/Chevy/Dodge and the Jeep Wrangler.

I thought recirculating ball[0] was commonly used in most passenger vehicles, and rack and pinion was more common in sports cars. [0] https://en.m.wikipedia.org/wiki/Recirculating_ball

The only recent example I'm aware of is the Ineos Grenadier, and it's quite controversial as it means the steering is a) slow, and b) has very low self-centering (also a function of caster).
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