Posts Tagged ‘Brabham BT3 Climax’

jack monaco

Jack Brabham starts the plunge from the Casino Square to Mirabeau in his factory Lotus 25 Climax ‘R3’ during the 1963 Monaco Grand Prix…

Brabham was joined at ‘Brabham Racing Organisation’ by Dan Gurney in 1963, the lanky Californian left Porsche at the end of their F1 program. In 1962 BRO ran a car for Jack only in the teams first F1 season.

For 1963 both were driving the latest Brabham BT7’s powered by short stroke, fuel injected Coventry Climax V8’s. In first Monaco practice Jack’s Climax munched a valve, Jack flew the engine back to the UK in his Cessna to have it rebuilt it in time for Sundays race. The F1 racer of 1963 was a DIY kinda guy, if his name was Brabham anyway!


Dan Gurney’s brand new Brabham BT7 Climax, Monaco 1963, he was mighty fast if lacking in reliability and luck in that car that year! Famously the driver Clark came to respect the most. (unattributed)

In final practice Gurney lost the head off a valve, as had Trintignants Lotus 24, Roy Billington gave Jack the sad news when The Guvnor returned with his rebuilt FWMV from Coventry.

Brabham decided to start Gurney and withdraw from the race. The following morning having heard of Jack’s predicament Colin Chapman sportingly offered Jack a drive in the Team Lotus spare, ‘R3’ fitted with last years Weber carb Coventry Climax V8. Clark did a 1:35:2 in this car ‘just for fun’ only 9/10 of a second slower than his pole time in his race chassis towards the end of qualifying.

Chapman knew Jack was well familiar with the handling characteristics of the car as Jack acquired a Lotus 24 in early 1962, the spaceframe variant of the epochal, monocoque 25 whilst Ron Tauranac completed the build of Jacks 1962 and first GP contender, the Brabham BT3.

And so it was that Jack had the opportunity to drive a car he had wondered a lot about since driving his own Lotus 24 Climax for much of 1962. ‘That was a great gesture by Colin and i was delighted not to miss the race, but i can’t say i liked his car. If i thought my tube chassis Lotus 24 had been cramped, this Lotus 25 redefined the term. Its German ZF gearbox had a weird ‘upside down’ change pattern, and whilst i thought Dans feet were big, Jimmy’s must have been microscopic! The 25 seemed to have terrific traction and cornered well, but the gearbox got stuck in 5th twice and i had to stop to have it fixed and finished way back’ said Jack in Doug Nye’s biography of him. Click here for an article on this race and the Lotus 25;

monaco 1963

’63 Monaco GP lap 1, the field led by Hill’s BRM P57 1st and Clark’s Lotus 25 cl 8th exiting the Station Hairpin. Next is Ginthers BRM P57 2nd, Surtees’ Ferrari T56 4th, #7 is a flash of McLaren’s Cooper T66 Climax 3rd, #4 Gurney’s Brabham BT7 Climax DNF ‘box and the rest. (unattributed)

MRD, BRO and the 1962 Season…

Jack Brabham and Ron Tauranac formed ‘MRD’ Motor Racing Developments Ltd to build racing cars in 1961, their first car, the FJ MRD was raced by Aussie Gavin Youl that year.

The main games were both production racing cars and F1, ‘Motor Racing Developments’ jointly owned by Brabham and Tauranac built the cars and ‘Brabham Racing Organisation’ owned by Jack (at that stage) ran the F1 program; prepared and entered the cars and contracted commercial agreements to fund the program.


Brabham being pushed to the Sandown grid, March 1962. Brabham sold this Cooper T55 to John Youl who raced it very successfully over the next couple of years the car continually developed by engineer Geoff Smedley including fitment of a twin-plug 2.5 FPF built by Smedley, an interesting story in itself. (

Jack raced in the International Series of races in the Australasian summer in early 1962 in a Cooper T55 under his own ‘Ecurie Vitesse’ banner.

The car was his factory Cooper 1961 F1 chassis ‘F1-10-61’ the little 1.5 litre FPF used in GP events replaced by its big FPF brother, an ‘Indy’ 2.7 for the Antipodean F Libre races. He won at Levin in NZ and Lakeside Queensland, i reckon his last Cooper win was his victory in the ‘Sandown Park International’ on 12 March 1962 from Surtees and McLaren both Cooper T53 mounted.

jack caversham

Jack Brabham in his F1 BT3 derived BT4 ‘Intercontinental’ Formula Brabham powered by a Coventry Climax 2.7 litre FPF ‘Indy’ engine. BT4 used smaller tanks than BT3 and 15 inch wheels all round. Australian national F1 was F Libre at this time. AGP, Caversham, WA, November 1962. Bruce Mclaren won the race in a Cooper T62 Climax, Jack collided with another competitor. (Milton McCutcheon)

By the end of the year he was racing his own BT4, 2.7 FPF powered in the Australian Grand Prix at Caversham WA in November.

But first there was a season of Grand Prix racing to contest, BT3 wouldn’t be ready until mid year as the customer FJ program had priority; MRD built 11 BT2 FJ’s, BT3 and 3 BT4’s in 1962, not bad for a new concern!

‘Brabham Racing Organisation’ needed a car for Jack to race in both championship and non championship 1962 events in the interim.

Colin Chapman was more than happy to oblige, selling Jack Lotus 21 chassis ‘936’ and 24 ‘947’ to enable the Aussie to chase the prizemoney and championship points on offer.

The 21 was the factory 1961 F1 design, a beautiful chassis only let down by the lack of a suitable, modern engine, the old 1.5 litre Coventry Climax FPF even in updated Mk2 form was too long in the tooth to keep up with the Ferrari Dino V6’s in 1961. Mind you, the brilliance of Moss in Rob Walker’s Lotus 18 took two wins at Monaco and the Nurburgring and Innes Ireland one in his factory 21 at the season ending Watkins Glen round.

Chapman updated the Lotus 21 design into the 24 for 1962, adapting the chassis to take the new 1.5 litre V8 Coventry Climax FWMV engine and the suspension of his ‘experimental’ masterstroke, the Lotus 25, the first modern, monocoque single seater from which all such racing cars right through to the present owe their parental lineage.

24 chassis

Lotus 24 cutaway drawing. Multi-tubular spaceframe chassis, front suspension by top rocker and lower wishbones and coil spring/damper units. Rear suspension by reversed lower wishbone, single top link and 2 radius rods for lateral location, coil spring/damper units. Girling disc brakes. Wheelbase 91 inches, front track 51 1/2 and rear 51 3/4 inches. Weight 1036 lb dry. Fuel tank capacity 27 gallons. Engines Coventry Climax V8 or BRM V8, gear boxes 5 speed ZF or 5/6 speed Colotti Francis. A good Coventry Climax FWMV V8 developed around 181bhp@8200rpm in 1962. (unattributed)

Mind you, the customers of the 24 thought they were buying Cols latest design…

As is well known, the conceptual inspiration for the Lotus 25 was Chapman’s Elan road car and it’s backbone chassis; why not widen the ‘backbone’ to accommodate the driver, pop the fuel into the structure so created either side of him and get enhanced torsional rigidity for less weight, the primary objectives of the exercise?

Chapman sketched his ideas, the 25 was drawn by draftsman Alan Styman, the prototype ‘R1’ put together in the early months of 1962 in a partitioned part of Team Lotus workshop at Cheshunt by mechanics Dick Scammell and Ted Woodley working with Mike Costin, Lotus Engineering Director (and shortly the ‘Cos’ of Cosworth) and Chapman himself . Doug Nye; ‘Chapman suspected the concept might not work out, but would in fact revolutionise racing car design’

The 1961 Lotus 21 chassis frames torsional stiffness was only 700lb/ft per degree of deflection, the 24 frame was 10 pounds lighter bare weight (before brackets and aluminium fuel tanks) and had similar rigidity to the 21. The 25 weighed in at 65 pounds bare, ‘yet offered 1000 lb/ft per degree rigidity rising to what was at that time a staggering 2400 lb/ft per degree when the new Coventry Climax V8 was installed in its rear bay’ said Nye.

clrak tub

Clark all snuggled into his brand new Lotus 25 ‘R1’, Belgian GP 1962. Monocoque structure by rivetted D Shaped light alloy longerons with fabricated steel bulkheads to support suspension, steering and engine. Suspension, wheelbase and track as per Lotus 24. Engine Coventry Climax FWMV V8 and ZF 5 speed ‘box. Fuel capacity 32 gallons. Weight 990lb dry. (Yves Debraine)

Chapman justified the new type 24 customer design as against offering them the 25 saying ‘just in case the monocoque idea didn’t work out’. Many customers had ordered 24’s unsuspecting the works was going to be running something quite different and superior. From Chapman’s perspective it was simple; he could build and sell plenty of 24’s then, off the back of the speed of the 21 in 1961, the 25 was unproven and it would take months to fulfil the orders even if he could talk his customers into embracing what was a new concept. Better to ‘take the bird in hand’, Lotus Components could build the 24’s quickly allowing Chapman to focus on the new 25 and deal with the flack later!

Lotus 24 customers in 1962 included UDT Laystall 4 chassis, Rob Walker 2 chassis, Wolfgang Seidel, Team Lotus themselves and Brabham.


Maurice Trintignant in one of Rob Walkers Lotus 24 during the 1962 French GP. He was 7th and highest placed Lotus in the race won by Dan Gurney’s Porsche 804. (unattributed)

It’s interesting to reflect on Jack’s thoughts when the 25 was announced but he probably had more than a sneaking admiration for Chapmans ‘guile’, Jack and Chapman both ‘wheeler-dealers’ par excellence, one needed to get up pretty early in the day to get the better of them; if anyone ever did!

In any event, Jack was a racer, he needed to work with what he had knowing the BT3 was coming along later in the season and in any event the 25 might not work.

Jack’s 21 ‘936’ was first tested at Goodwood ‘I found one needed a shoehorn to fit into it-Colin Chapman seemed to build cars for midgets. But its ride was softer than any Cooper, its steering lighter and its handling good’ said Jack.

Only a few days later the car was destroyed in a workshop fire at the Repco facility in Surbiton where Tim Wall was preparing the car. Whilst fitting the battery a spanner shorted against one of the fuel tanks, making a small hole which then gushed burning fuel! Brabham and Wall ran out of fire extinguishers trying to control the fire and the fire brigade were unable to save the uninsured 21.

Chapman lent Jack the parts to build up another car which was ‘flung together’ in time for the Pau GP on 23 April. Jack qualified well in 4th but the car ran its bearings on lap 4.

The team rushed to make the ‘Aintree 200’, the following weekend but they missed practice, the car stripped its gears in the race which was won by Clark’s Lotus 24. Chapman and Clark let Jack drive the 24 for the first time in practice ‘Again i found it as tight as a sardine can’ quipped Brabham. Tight but fast!

By early May Jack’s 24 was ready, Roy Billington and Jacks team worked feverishly on the car to finish it at Lotus in Cheshunt in time for the ‘BRDC International Trophy’ at Silverstone on May 12. He was 13th on the grid and  finished 6th, the race won by Hill’s BRM P578. It was a good result, final chassis set-up was done by guesswork/the eye and the tacho drive failed.

dutch gp 1962

Brabham raced his Lotus 24 competitively in Holland before running into the spinning Rodriguez Ferrari 156. Q4, DNF on lap 4 upon Clark’s debut of the Lotus 25. (unattributed)

On 20 May the Lotus 25 made its race debut in Jim Clark’s hands at Zandvoort, Holland. The racing world drooled over ‘R1’ which Clark qualified 2nd and lead the race until clutch problems intervened.

clark zandvoort 25

Jim Clark debuts one of the most influential GP cars of all time; Lotus 25 Climax chassis ‘R1’ Zandvoort 1962. (unattributed)

24’s were entered for Trevor Taylor, Innes Ireland and Jack, the competitiveness of the chassis shown by Taylor’s 2nd place, Jack qualified very well 4th, but was punted out of the race by Ricardo Rodriguez’ Ferrari 156. The Mexican spun across his path as Jack lined him up for a fast downhill pass. The race was won by Hills BRM P57.

jack monaco

Jack blasts up Beau Rivage, Ste Devote in the background, Monaco 1962. Behind his Lotus 24 is Clark’s Lotus 25. Jim Q1 DNF with clutch dramas, Jack classified 8th. In the distance is one of the Ferrari 156’s. (Sutton Images)

At Monte Carlo Jack had ‘947’ flying, he qualified 6th and raced in 3rd until until a prang forced his withdrawal. He was classified 8th and quipped ‘I had a wishbone break-after i hit the barricade’ avoiding Phil Hill’s spun Ferrari 156 in Casino Square. Bruce McLaren won in a Cooper T60 Climax.

brabham 24 monaco

Brabham Lotus 24 Climax ‘947’ Monaco 1962. (unattributed)

Back in the UK a week later for the ‘International 200 Guineas’ at Mallory Park on June 11 he finished 2nd from 3rd on the grid and continued to get good experience of the new Climax V8 in the 24. Surtees was victorious in his Lola Mk4 Climax.


Brabham, Lotus 24, ‘2000 Guineas’ Mallory Park. June 1962. (unattributed)

A week later at Spa on 17 June he qualified 15th having arrived late and had little practice but raced well finishing 6th. Clark took his and the 25’s first championship win.

There the handling of the Lotus ‘was simply evil-demanding the full road width at 150mph…the boys straightened out the bent chassis (damaged in the Monaco prang) in time for Reims’.


Innes Ireland’s BRP/UDT Laystall Lotus 24 Climax being loaded at the 1962 French GP at Rouen. Innes Q8 DNF puncture on lap 1. Fine carefully faired rump on display, as is the rear suspension, typical layout of the day described in the text earlier. (unattributed)

At Reims for the non-championship GP he was 4th from grid 5 on 1 July, McLaren again winning in a T60 Cooper. Jack enjoyed a long high speed slip-streaming dice with Bruce and Graham Hill’s BRM and in the process forgot to switch to the reserve fuel tank late in the race.

Then a week later Jack contested the French Grand Prix at Rouen-Les Essarts qualifying 4th but failed to finish with a suspension breakage, a rear shocker mount had broken. Dan Gurney took a popular win in the Porsche 804 from Tony Maggs Cooper T60, a wonderful result for the young South African. Hill and Clark both had troubles.

jack aintree

Brabham firing up the Coventry Climax FMWV 1.5 litre V8 engine of his Brabham Racing Organisation Lotus 24 under the watchful eye of chief mechanic Roy Billington, Aintree, British GP paddock 1962. This shot shows the svelte lines of the car to good effect. (unattributed)

Back home for the British GP, that year held at Liverpool’s Aintree on 21 July he qualified 9th and raced to 5th. The new BT3 was nearly completed only difficulties finishing the complex ‘crossover’ exhaust system required by the early series Climax engines prevented its debut.

aintree 2

Brabham, Aintree British GP 1962. Lotus 24 Climax. (unattributed)

The BT3 ‘F1-1-62’ was completed the week after Aintree and run briefly at Goodwood before Coventry Climax dramas intervened…

The engine out of the 24 was slotted in and then tested at Brands ‘here at last was a modern F1 car into which i actually fitted. Its cockpit wasn’t too hot and most critically it handled beautifully. Ron really knew his stuff’ said Jack.


Brands BT3 test in late July at Brands Hatch. Tauranac at left, Harry Speirs of Climax fettling the engine and Jack. (Jack Brabham Story)

The BT3 was taken straight to the Nurburgring for its GP debut.

jack umbrella

Brabham awaits the start of the very sodden German GP, the Nurburgring awash. He looks calm but it had been a fraught practice with the new car, the Climax V8 ran a bearing. (unattributed)

On the 5th of August BT3 finally made its GP debut at the Nurburgring, Jack was taking the new car gently but it still ran the bearings in his Climax engine.

The team built an engine from the bottom end of a Team Lotus unit and top end of the one in BT3, which was rough but allowed him to qualify. Jack’s spare was flown in that night to Cologne and fitted in the morning.

He qualified 24th but failed to finish with a throttle linkage which had been lashed up with extra springs to ensure it would close safely, throttle balance in the corners a real challenge, so he retired. This thrilling race in awful wet conditions, watched by over 350000 fans was won by Graham Hill, a supreme drive in his BRM P57 by 2.5 seconds from Surtees’ Lola Mk4 Climax and Gurney’s Porsche 804.

bt3 cutaway

Brabham BT3 cutaway. Muti-tubular spaceframe chassis. Front suspension by unequal length upper and lower wishbones with coil spring/Armstrong damper units. Rear by reversed top wishbones, wide based lower wishbones coil spring/Armstrong damper units. Girling disc brakes. Fuel capacity 26 gallons. Wheelbase, as for the Lotus 24 and 25 was 91 inches. Front track 52 and rear track 50 1/2 inches. Weight 1045 lb dry. Engine Coventry Climax FWMV V8 circa 180bhp@8600rpm, 6 speed Colotti-Francis gearbox. (unattributed)

brabham bt3 germany

Brabham’s first GP car, the BT3 Climax makes its debut at the Nurburgring 1963. (unattributed)

Whilst testing of BT3 continued Jack raced the Lotus 24 ‘947’ one last time in the 3rd Danish GP at Roskildering on 25 August winning all 3 heats in a real carve-up with Masten Gregory in a similar Lotus 24, and the event as a consequence.

jack portrait

Nice portrait of Brabham in his Lotus 24 Climax in the Aintree paddock 1962. Cars behind are the Lola Mk4 Climaxes of John Surtees and Roy Salvadori. (unattributed)

Back in the UK Jack contested the ‘9th Gold Cup’ at Oulton Park on 1 September, Clark won the race in his Lotus 25, he seemed to have more luck in the non-championship than title rounds in 1962, Jack was 3rd in BT3 having qualified 5th. The race was held over a full GP distance so provided valuable mileage for the new car.

A critical learning was that the brake pads had worn after only 40 laps of a total of 73, the discs were increased in size from 9 to 10.5 inches and spring rates stiffened, the body was also ‘tidied up’ post Oulton.

gold cup

Brabhams BT3, Oulton Park ‘Gold Cup’ September 1962. (unattributed)

Jack elected to miss the Italian Grand Prix on September 16 in order to better prepare for the ‘away races’ at the end of the season; the non-championship Mexican GP and final championship rounds at Watkins Glen and Kyalami. Graham Hill won at Monza from teammate Richie Ginthers BRM P57, Clark started from pole but this time gearbox dramas caused a lap 12 DNF.

jack US

Brabham BT3, US GP. (George Phillips)

The US Grand Prix was held at Watkins Glen on October 7, Clark won the race from Hill and in so doing kept his championship hopes alive, the title was decided in the final round in South Africa.

Jack had a competitive run finishing 4th, having a big dice with Gurney and McLaren, despite his Colotti box jumping out of gear and qualifying 5th, the ‘Automobile Year’ report stating Jack ‘created a sensation in qualifying’ with what was still a new car.

The non-championship Mexican Grand Prix was contested by many of the GP teams on 4 November as it was close to the US Grand Prix in both time and proximity. The event was a tragic one; Ferrari had not entered but local star Ricardo Rodriguez, a Ferrari driver that year was keen to strut his stuff in front of his home crowd at the Magdalena Mixhuca circuit at Mexico City.

He approached Rob Walker who entered the 20 year old in his Lotus 24 Climax.

Jack’s Lotus 24 ‘947’ was lent to John Surtees for this race and was a ‘bit player’ in the sequence of events which lead to Ricardos death.

Rodriguez had fastest time, which Surtees then pipped in ‘947’. Rodriguez kissed his father on the hand from the cockpit of the Lotus and went out to attempt to retake pole to keep the faith with the thousands of his countrymen who had turned up to see him.


Poignant and sad shot. Ricardo Rodriguez kisses his fathers hand, youngest brother Alejandro looks on and drives the Rob Walker owned Lotus 24 Climax to his death. Mexico 1962. (unattributed)

The poor driver had a massive, fatal accident on the dauntingly fast Peraltada corner.

Some reports say their was a right rear suspension failure on the Lotus, others that he was simply going too fast in a car he wasn’t familiar with. Innes Ireland’s account in his autobiography of the differences in handling of the Lotus 24 and Ferrari 156, he raced both in 1962, is that they were considerably different. Its possible given his limited time in the Lotus that Rodriguez made an error as a result of the differences in handling characteristics of the different chassis’. Whatever the case the young driver was dead.

Clark and Trevor Taylor shared the winning Lotus 25 from Jack’s BT3 and Ireland’s Lotus 24.


Jacks BT3 2nd leads good mate Bruce McLaren’s Cooper T60 Climax DNF engine in the 1962 Mexican GP. 4 November. (Dave Friedman Collection)

John Surtees, in Jack’s Lotus 24 qualified 4th in front of Jack in 7th but had ignition failure in the race and failed to complete a lap. ‘947 was then sold to Syd van der Vyver in South Africa. It was subsequently destroyed in a workshop fire there, it and Jack’s Lotus 21 ‘936’ have been ‘reconstructed/rebuilt/rebirthed’ and run in Historic Events to this day.

At Kyalami on December 29 Jack had another competitive points winning run again finishing 4th, despite a gearbox jumping out of 3rd and 4th gears. Jack experimented with the first Hewland gearbox in BT7 in 1963 and in so doing ended the gearbox unreliability for the non-BRM British teams of the era, Mike Hewland’s transmissions amazingly robust.

All of the South African GP drama was centred on the battle for the championship between rivals and friends, Clark and Hill.

Clark led from pole and had the race ‘in the bag’ but as was so often the case in 1962, whilst the Lotus 25 was easily the fastest car it was not the most reliable. Races were lost due to engine, gearbox, clutch and other component failures, and so it was that Jim retired on lap 61 of the 82 lap event with an engine losing oil, a liquid which cannot be replenished during a race.

Hill took a popular race and drivers championship win, and BRM’s only one as a manufacturer.


Brabham races to victory in BT3, the first GP win for Brabham as a marque, at Solitude, Stuttgart 28 July 1963.  (unattributed)

BT3 raced on into 1963 and GP Success…

Ron Tauranac developed a new car for 1963, the BT7 which was a lighter and cleaned-up BT3, Gurneys car 2 inches longer in the wheelbase than Jack’s in an effort to keep the lanky Californian comfier than Jack had been in Chapman’s Lotus 24!

Jacks BT7 was not ready until later in the season, he ran BT3 at Monaco before the Climax engine failure, racing the Team Lotus 25 and at Spa before using BT7 in the championship events from the Dutch GP in June.

Fittingly BT3 won Brabham’s first GP as a manufacturer when Jack won the Solitude GP, near Stuttgart, Germany on 28 July 1963 from Peter Arundell’s works Lotus 25 and Innes Ireland’s BRP BRM. The circuit was majestic, 7.1 miles long with many fast corners through pine forests with average speeds of over 105 mph, it was a fitting place to take such a win.

solitude turner

Solitude GP 1963. Brabham’s #1 BT3 1st from #30 Jo Bonnier’s Cooper T60 Climax 9th, #16 Trevor Taylor’s Lotus 25 Climax ‘R3’ DNF, the car Jack drove at Monaco that May, the red nosed Lola T4A Climax of Chris Amon DNF #2 Innes Ireland BRP BRM 3rd, #17 Peter Arundell’s Lotus 25 Climax and the red Lotus 24 BRM of Jo Siffert DNF. (Michael Turner)

solitude article

‘Autosport’ 1963 Solitude GP report

Solitude was truly an amazing feat for a newish marque. Jack famously became the first man to win a championship GP in  a car of his own name and manufacture at the French GP in 1966, when BT19 Repco took the chequered flag.

BT3 was also used by Jack to win the Austrian GP at Zeltweg on 1 September from Tony Settember’s Scirocco BRM and Carel de Beaufort’s Porsche. Raced by Denny Hulme to 3rd in the Kanonloppet at Karlskoga, Sweden behind Clark and Taylor’s Lotus 25’s on 1 August, BT3 was retained as BRO spare car for the balance of 1963.

Sold to Ian Raby for the 1964 season and a life in British Hillclimbing after that before being restored by Tom Wheatcroft in 1971 and an exhibit of his fantastic Donington Museum. In more recent times BT3 has been sold and is ‘historic raced’ which seems fitting for a car so significant in laying the foundations of success for Tauranac and Brabham all those years ago…


BT3 at the Goodwood Festival of Speed in 2012. (

Team Lotus sorted the 25 over the ’62/3 winter into a more consistent, reliable package, Doug Nye credits Len Terry for his role in finessing and fettling the car and Coventry Climax also developed the engines further.

Not only was the Lotus 25 and its successor 33 the best package of the 1.5 Litre F1 but one of the ten most important GP designs ever…no doubt Ron Tauranac had a good, long, hard look at Jacks sister Lotus 24 as he finalised the design elements of BT3 in the early months of ’62.


Victorious spaceframe amongst the monocoques; #6 Jacky Ickx in his winning Brabham BT26A Ford, #7 Stewart Matra MS80 2nd, Rindt Lotus 49B DNF and Hulme McLaren M7C DNF, all Ford powered. German GP 1969. Tauranac evolved his Repco powered 1968 BT26 into the Cosworth powered BT26A for ’69, Ickx also won at Mosport, Canada. Ron was using aluminium to provide some additional structural stiffness to his multi-tubulat masterpieces by then. (unattributed)

One of the bits of history which amuses me, small things amuse small minds, granted! is that despite the undoubted technical advantages of a monocoque chassis over a good-ole spaceframe, Tauranac’s Brabhams won GP’s with spaceframes right to the end of the sixties; his 1968 design BT26, won 2 Grands Prix for Jacky Ickx in 1969, let alone the titles Ron and Jack took in ’66 and ’67! So theory and practice sometimes diverge.

Tauranac’s first monocoque GP Brabham, the 1970 BT33, a change forced by regulations demanding ‘bag’ fuel tanks (his 1968 BT25 Indycar was his first monocoque) was a ripper car, one of the seasons best, it should have won at least 3 GP’s (South Africa, Monaco and British) instead of the one it did and Jack with luck, could have taken a title in his final, 1970 F1 year.


Brabhams BT33 3rd ahead of Hulme’s McLaren M14D 4th and Peterson’s March 701DNF a Ferrari 312B in the distance. Rindt’s Lotus 72 Ford won. French GP, Clermont Ferrand 1970. BT33 took a win for Jack in South Africa in 1970, Tauranac’s first GP monocoque. (unattributed)

Back to the period at hand; 1962’s BT3 evolved into 1963’s BT7, a very competitive package in the hands of both Jack and particularly Dan Gurney who became the driver the era’s undoubted star, Jim Clark feared the most.

There would be Brabham wins in the 1963-65 period but not as many as there should have been with a series of problems/preparation errors and bad luck of the type Team Lotus experienced in 1962, a story for another time…


Lotus 24.

24 outline

Lotus 24 outline. (unattributed)


Brabham, Lotus 24 Climax, Dutch GP 1962. (Getty Images)

monaco 62

Jack Brabham Lotus 24 Climax Monaco 1962 (John Hendy)

Brabham BT3.

bt3 outline

Brabham BT3 outline. (unattributed)

The photos below by George Phillips were taken of BT3 on 29 July 1962 at MRD’s New Haw Lock factory beside the River Wey navigation canal adjacent to the old Brooklands circuit.

brabham 1

Profile of BT3 (George Phillips)

brabham 2

Cockpit shot of BT3 also shows the spaceframe chassis and unusual front suspension, beefy upper wishbone and single lower link (George Phillips)

brabham 3

BT3 Rear wishbone upper and lower suspension, Weber carbed Coventry Climax FWMV engine in 1962, Colotti-Francis 6 speed ‘box. (George Phillips)

brabham 4

BT3 CC FWMV engine layout, spaceframe chassis, vestigial roll bar!, 2 radius rods. (George Phillips)

brabham 5

BT3 butt shot. Nicely faired engine, inverted upper wishbones. (George Phillips)

brabham 6

BT3 front detail. Spaceframe of 18 guage steel construction, Smiths instruments, LH change for Colotti ‘box, front suspension detail including odd top wishbone. (George Phillips)

BT7 1963 Future.

jack nurburgring

Brabham’s own spaceframe 1963 vintage. Jack in the Nurburgring paddock in a BT7 Climax, an evolution of BT3, 1963. (unattributed)


Doug Nye ‘History of The GP Car 1965-85’, ‘Automobile Year’ # 10 and 11, Doug Nye ‘The Jack Brabham Story’,,

Photo Credits…

The Cahier Archive, Dave Friedman Collection, Milton McCutcheon, Yves Debraine, John Hendy, George Phillips,, Getty Images, Sutton Images

Tailpiece: Brabham debuts BT3 Nurburgring 1962…

What a sense of achievement and anticipation Brabham must have felt as he set off on his first laps of The ‘Ring in BT3, in his wildest dreams i doubt he would have imagined the success of the following years?!

jack ring

(The Jack Brabham Story)