On models with Hydrolastic suspension, an auxiliary coil spring is located can be carried out on the suspension or its components, the Hydrolastic system. Hydrolastic is a type of space-efficient automotive suspension system used in many cars produced by British Motor Corporation (BMC) and its. 5 days ago Most components shown below are unique to the Hydrolastic (wet suspension) system and suspension/braking systems on.

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In pitch, as described above, fluid is displaced front to rear, and hence the pressure in the system stays effectively the same, and thus the suspension is much more compliant. If the car decelerates sharply, it will dive. Hyrolastic servicing the spares market for some years a buyer was found and the production line was sold.

In this diagram the left unit is uncompressed and the right compressed. These are then linked fore and aft; the left front linked to the left rear, along with the right front linked to the right rear.

Each displacer unit contains a rubber spring, and damping is achieved by the displaced fluid passing through rubber hydrrolastic. To some extent that indicates its success: I used to wonder all those years ago whether a degree of anti-roll could have been achieved by by a cunning cross-connection of the Hydrolastic system fluid pipes side to side front and rear as well as the mere front to rear connection they actually went with.

With the lower containers being squeezed by the suspension, and no way out of the upper containers as in escape to the other end of the car the fluid’s only choice is hydrlastic compress the spring, giving pretty much the same suspension action as if the spring itself was being compressed directly.

This gives the suspension a sharply rising rate even in pitch, so that there is a strong tendency to return to equilibrium. MGF was the last vehicle platform to use this design. This ground-breaking design, with its front wheel drive, transverse engine, sump gearbox, inch wheels, and phenomenal space efficiency, was still being manufactured in and has been the inspiration hydroolastic almost all small front-wheel drive cars produced since the early s. The Metro above turned out to be just the ticket.


Hydrolastic can resist body roll while also being smoother-riding. These cars used rubber cone and compressed gas suspension units with cross-axle liquid exchange known as Hydrolastic, or Hydragas suspension.


In the late s, after the acquisition of the family business by the Avon Rubber Company, Moulton started up a new company, Moulton Developments Limited, to design the suspension system for British Motor Corporation’s new small car, the Mini, that was being designed by his friend Sir Alec Issigonis. The Hydrolastic system pressure valves are located at the rear of the car on the sub-frame crossmember. One obvious development that would be necessary for incorporation in a hydragas circuit, is dual flow: Shock absorbers Automotive suspension technologies Automotive technology tradenames.

Measure the height from the axle centre-line to the underside of the wing opening at both the front and rear of the car and compare with the specified trim heights given in Technical Data at the end of this section. Most events entered were hhydrolastic, but he also raced at circuits.

Hydrolastic – Wikipedia

However, in production of Hydrolastic bottles at Dunlop came to an end and BL modified the Princess Hydragas bottles to fit. I had an MGF with interconnected Hydrogas. Notify me of new posts via email. For this operation a special piece of equipment, namely a Hydrolastic Suspension Service unit, is required.

Later, he was responsible for the Hydrogas system, which hydrllastic developed for the Austin Allegro car and is still in use on the Rover series and the MGF. He was a practical engineer who had hand built a car in plywood and aluminium for some racing success, before he went on to work on rubber suspension and the Mini motor car. The Mini being the most popular car ever produced in the UK, with over 5, million cars sold worldwide.

If a different pressure reading is now indicated, the system pressure should be adjusted by operating the pressure pump to raise the pressure, or opening the pressure valve on the unit to lower the pressure, ssystem the specified figure is obtained. Alec Issigonis at the drawing board. The car must be resting on all four wheels with a load as described above for pressurising.

Theme : Suspension – Hydrolastic Rubbery Goodness

Why doesn’t the fluid itself compress? The rot set in at BMC in so many ways. Without this rising rate there would be no effective pitch resistance at all. The front-to-rear interconnection of the Hydrolastic system means that roll stiffness can differ from pitch stiffness.


Thus, they are interchangeable. We are great fans of the VW principle, that every man should be able to afford a car. He explained that this was: Learn how your comment data is processed. The Maxi featured designed Hydrolastic units with the regulator valve fitted with the interconnection pipe.

As the front wheel hits a bump fluid is pushed back to the displacer unit of the back wheel, lowering it relative to the body. The result is that the floorpan stays level: Attempts to moderate these effects will essentially complicate the system or reduce its effectiveness in handling unevenness at the road surface.

Theme : Suspension – Hydrolastic Rubbery Goodness – Driven To Write

Now I come to think of it, I have never driven a British car — especially not from a time when idea meant something. June Learn how and when to remove this template message. A British sports car concept featuring the Bluebird cartridge exchange instant recharging system.

Both systems are designed to be fit-and-forget parts or sealed units. The unit consists basically of a vacuum pump, a pressure pump and a fluid reservoir.

By earlyprototypes were running, and by mid the project was given an official drawing office project number ADO15 so that the thousands of drawings required for production could be produced. In fact that was Hitler’s plan, where VW stands for “peoples car. The answer is that the top containers of each unit have a spring inside them – rubber on the hydrolastic system and gas in the hydragas units.

Garages equipped with hydragas pumping facilities are becoming more and more scarce, and prices can vary dramatically. If the dimensions are outside the specified limits, the system pressures should be checked and adjusted if necessary to obtain the correct ride height.