Author Topic: Jensen FF V8  (Read 503 times)

Offline Greybeard

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Jensen FF V8
« on: 26.07. 2023 17:11 »

1966 Jensen FF V8 – The World’s First All-Wheel Drive Production Car with an anti-lock braking system.

When the Jensen FF was released in 1966 it made the motoring world sit up and pay attention. The FF was the first production car with all-wheel drive, it was also the first production car with an anti-lock braking system.

To say the model was ahead of its time would be a considerable understatement, though because Jensen only managed to sell 320 of them between 1966 and 1971 very few people have ever even heard of the model, let alone seen one in person.

The Jensen FF was directly based on the body of the much better known Jensen Interceptor, a British built grand tourer with a body styled in Italy by Carrozzeria Touring and a V8 engine supplied by Chrysler.
“FF” stands for “Ferguson Formula,” an all-wheel drive system developed by Ferguson Research Ltd and licensed to Jensen.

The Jensen FF is 5 inches longer than the standard Interceptor, it’s also slightly heavier. It can be visually distinguished from its stablemate by the twin vents on the front fender (there’s only one on the Interceptor), and it’s different front end.

By the time the Jensen FF was released in 1966, Jensen Motors already had a long track history of producing innovative vehicles. The company had been founded back in 1922 as W J Smith & Sons Limited by brothers Alan and Richard Jensen,m and they quickly made a name for themselves with their automotive designs.

Greybeard (Neil)
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Re: Jensen FF V8
« Reply #1 on: 26.07. 2023 20:11 »
G'day GB.
With a 7.2Lt V8 it'd mooooove *ex* Price guide says £150,000  *eek*
Cheers
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Offline Greybeard

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Re: Jensen FF V8
« Reply #2 on: 26.07. 2023 22:45 »
I'd be interested to know how they managed antilock braking in 1966 without microprocessors.
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Offline RDfella

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Re: Jensen FF V8
« Reply #3 on: 27.07. 2023 09:16 »
Same way they did on BSA's presumably ..... rubbish brakes = no locking.  *smile*
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Re: Jensen FF V8
« Reply #4 on: 27.07. 2023 10:26 »
Actually an interesting Q GB, and makes for a good read, crossing from aircraft to cars via motorcycles  . .

Here's an extract from wikiwossit:

"In 1958, a Royal Enfield Super Meteor motorcycle was used by the Road Research Laboratory to test the Maxaret anti-lock brake.[11] The experiments demonstrated that anti-lock brakes can be of great value to motorcycles, for which skidding is involved in a high proportion of accidents. Stopping distances were reduced in most of the tests compared with locked wheel braking, particularly on slippery surfaces, in which the improvement could be as much as 30%. Enfield's technical director at the time, Tony Wilson-Jones, saw little future in the system, however, and it was not put into production by the company.[11]

A fully-mechanical system saw limited automobile use in the 1960s in the Ferguson P99 racing car, the Jensen FF, and the experimental all-wheel drive Ford Zodiac, but saw no further use; the system proved expensive and unreliable.

The first fully-electronic anti-lock braking system was developed in the late-1960s for the Concorde aircraft.

The modern ABS system was invented in 1971 by Mario Palazzetti (known as 'Mister ABS') in the Fiat Research Center and is now standard in almost every car. The system was called Antiskid and the patent was sold to Bosch who named it ABS"
Bill

Offline Greybeard

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Re: Jensen FF V8
« Reply #5 on: 27.07. 2023 13:08 »
Wow, thanks for the research Bill 👌

I'm guessing about the principles of ABS. I imagine that each wheel has a disk attached that has a series of windows punched through it*. A sensor detects the windows passing and returns the frequency to a central processing unit. During braking, if the speed of one wheel or more is slower than the rest the processor sees that as a skid and sends a signal to the hydraulics on those wheels to reduce brake pressure.

To create something like that in a purely mechanical system seems tricky. Possibly hydraulic pressure differentials from each wheel were used.

*My new BSA has that.
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Re: Jensen FF V8
« Reply #6 on: 27.07. 2023 15:03 »
This is a reasonably straightforward history GB, from early mechanical systems (trains and planes) through the Ferguson Formula sort of thing, to the modern digital systems which we take for granted. No more frantic pumping the pedal to prevent lock up, 'threshold braking' etc. Never ridden a bike so equipped, I don't think - or did my K series Beemers maybe have something? Brain fading  . . .  like the brakes on the bikes in the shed  . . .
https://didyouknowcars.com/history-of-anti-lock-brakes/
Bill