Showing posts with label Silverstone. Show all posts
Showing posts with label Silverstone. Show all posts

Friday, August 25, 2023

There Were Four Thousand In Blackburn - The T260 Had Just 207

1971 was a very significant year.  From a personal perspective, I started my automotive career-proper at BMW, while, much more significantly, the BRM P160 proved highly competitive in Formula 1, LPs of great quality were released, such as Sticky Fingers, Who’s Next and Tapestry, there was the announcement of cars like the Alfasud, Maserati Bora and BMW 2002 Tii, and . . . hope sprung of a new dawn in the Cam-Am Challenge, with the addition to the grid of the Lola T260 and its driver, Sir Jackie Stewart.

BRM at Monza, September 1971

A Lola T70 Mk.2 in the hands of John Surtees had won the inaugural Can-Am Challenge in ’66.  However, since then, the M8 McLaren in its various iterations had steam-rollered the opposition, firstly as the Bruce and Denny Show (Bruce McLaren and Denny Hulme), then with Peter Revson partnering Hulme after McLaren’s death in 1970.  At the time, many of us resented the McLaren ‘win machine’ as the cause of the Group 7 series becoming boring because of repetitive, predictable results.

The Bruce (#4) & Denny (#5) Show, Laguna Seca, 1969. (Courtesy Motor Sport Images)

One of the very few series rivals to get anywhere near bothering the McLaren juggernaut was the Chaparral team of the innovatory Texan, Jim Hall.  Not content with seeking ultimate competitiveness from high downforce aerodynamics by mounting a tall rear wing on his 2E machine during the ’66 season, he surprised everyone four years later with his 2J – a car that achieved even more powerful ground effects by mechanically sucking air out from under its floor.  This was facilitated by a pair of rear-mounted fans and thus anticipated the similar solution devised by Gordon Murray for the Formula 1 Brabham BT 46B of 1978.  Not unexpected really, as his high wing concept had also found its way into Grand Prix racing during the 1969 season.  The 2J ran in only six Can-Am races in 1970, driven in the second of these – Watkins Glen – by the reigning F1 World Champion, Jackie Stewart.  In that first year of the new decade, Jackie was feeling the dispiriting effects of the deaths of several fellow drivers accumulated over the later years of the 1960s, and, ironically, persistent criticism of him about his safety campaigning.  Unsurprisingly, his enthusiasm for his profession was waning.  However, the revolutionary nature of the 2J was enough to revive his interest.  In his autobiography, Winning is Not Enough, he says: As we were discussing what to do about the Nurburgring, (its dangerous aspects) I was called away to take a telephone call from America.  It was Jim Hall, inviting me to drive the Chaparral in a sports car event, and, even in the middle of all that, I found myself getting as excited about the prospect of being behind the wheel of such a special car as I had at any stage of my life.  I instantly accepted his offer because the Chaparral was known as the most advanced racing car of its time.  Although his race at Watkins Glen ended in a retirement, the experience seems to have had a positive effect, for it was not too long before it was revealed that Stewart had reached agreement with Carl Haas to drive the new Lola 260T in a full 1971 Can-Am campaign.  Jackie was frank in the autobiography: The F1 season was my priority, but Cam-Am offered a second income stream that was hard to resist.

Jackie Stewart in the Chaparral 2J, Watkins Glen, 1970. (Courtesy Motor Sport Images)

Haas was a classic mid-century American automotive entrepreneur.  A Jewish immigrant to the ‘States just before WW2, he ran cars in several race series, including NASCAR, F5000, F1 and Indy/Champcar in addition to Can-Am, eventually becoming best known for his association with Hollywood’s Paul Newman and the formation of Newman/Haas/Lanigan Racing.  In the late sixties he contracted with Eric Broadley to act as the U.S. importer of Lola racing cars and developed the business to a highly successful level.  Broadley was happy to allow Haas to function as a works team and the American used his commercial nous to secure supportive sponsorship from cigarette makers, L & M.  Whilst Lolas had been a familiar part of the Can-Am scene in the late sixties, they had been relatively conventional and not front-of-the-grid competitive.  With such characteristics persisting in the new decade’s opening season’s Lolas – the T220 and T222 – Haas used all his powers of persuasion to convince Broadly that a more daring new design was essential if the perception of the Lola brand was not to be devalued because of lack-lustre results.

Left: Carl Haas at his business premises at Lincolnshire, Illinois. (Courtesy Racemaker/David Huson). 
Right: Haas with Eric Broadley, founder of Lola.  (Courtesy JKRacing50)

Broadley acceded to Haas’s entreaties and briefed his designer, Bob Marston.  He also sought input regarding bodywork from his associate, Peter Jackson, (and body engineer Peter Wright), at the expert glass fibre fabrication firm, Specialised Mouldings.  Broadley wanted a basically wedge shaped, compact form, with a relatively small overall footprint – he was keen for instance to avoid the substantial front end overhang seen on the McLarens.  But since the wedge format could, as had been seen with the Autocoast Ti-22 at Mont Tremblant in 1970, be prone to end-over-end loss of control incidents, the main aerodynamic emphasis was on the avoidance of front end lift, coupled with maximum possible downforce on the rear axle.  The latter was sought without any particular focus on the rear body surfaces but by simply using a large wing – not especially high mounted, but full width and located unusually far forward, most of its surface in front of the rear axle.  An additional distinctive bodywork feature was the presence of 207 small holes in the upper surface between the windscreen base and the front brake air duct openings.  These were for the purpose of releasing air that otherwise would cause a build-up of high pressure, and thus lift, underneath the front end of the monocoque floor.  The nose incorporated a depth-variable front splitter. 

Otherwise, the T260 was largely ‘state of the art’ for the time, featuring an aluminium monocoque, side mounted radiators, horizontal mounted, rocker arm actuated front springs and inboard brake discs, front and rear.  A relative novelty was the specification of 13” front wheels. The engine was a Foltz-built 8.1 litre big block Chevrolet V8 mated to a Hewland Mk.2 four speed transmission.  Output at 7,000 rpm was commonly quoted as being 700-760 bhp and 600+ lb-ft torque.  Foltz offered some options regarding the amount and spread of torque generated in order to make easier the evaluation of the car’s handling during the early stages of development. 

At the time, Frank Gardner – mostly known for his F5000 and saloon car exploits – was Lola’s test and development driver.  He was able to take the T260 out on track, (at Silverstone), for the first time in May 1971.  With the first round of the Can-Am due at Mosport in Canada in mid-June, scope was limited.  Gardner was quick to express his concern about this because it was immediately apparent that the car inherently understeered, and a ‘cure’ would likely require a considerable number of testing miles.

Gardner testing the T260 at Silverstone, May 1971.
Note especially the 13” front wheels and forward position of the wing. (Courtesy Motor Sport)

Stewart for his part encountered the car at Silverstone at the beginning of June.  The weather was against him – heavy rain – and his initial impressions are not recorded.  He had however already prevailed upon Broadley to make a significant change.  Ten months previously Jochen Rindt’s accident at Monza in the Lotus 72 still weighed heavily on the World Champion’s mind.  Not only were the Stewart and Rindt families very good friends, but Jackie was especially close to Jochen, considering the Austrian his principal rival on-track.  Though the sudden, violent sharp left hand swerve into the Parabolica armco was not per se the cause of Rindt’s death – that was attributable to his belts not being properly secured – Stewart was highly sceptical about the advisability of running inboard front brakes, given the possible consequences of a shaft failure.  Broadley had no alternative but to agree that the front brake discs be moved outboard.  At the same time, a similar revision was effected at the rear, since the limited testing so far completed had revealed problems with heat not being dissipated sufficiently from the discs.  And there was a knock-on from this.  To accommodate the relocated discs, larger diameter – 15” - front wheel rims were required – along with an enlargement of the leading curve of the wheel arch.

Stewart with the T260 at Silverstone, June 1971. (Courtesy Sutton Images)

We do know that Stewart at last had the chance to drive the T260 in unconstrained circumstances at the Mosport circuit on 10th June.  His perception of the car’s handling characteristics – not helped by the bumpy nature of the track – were summed up by his apparent likening of the machine to a ‘pregnant elephant!’  The following day he was nevertheless able to set the day’s fastest time and this proved to be good enough for pole position when the Saturday session became rain affected.  Next day, at the opening round of the Can-Am season, he led the race from Hulme’s M8F, but retired just short of quarter distance because of a failed transmission seal.  The McLaren team had had a scare, but Hulme took the victory and the marque’s cars filled places 1-6 in the race results table.

Stewart’s T260 at Mosport, June 1971. The bigger front wheels and related re-profiled front wheel arch are evident. (Courtesy Jerry Bendl Collection)

Two weeks later, Round 2 of the Can-Am series was scheduled for Mont Tremblant.  Like Mosport, this was circuit notorious for its uneven track surface.  Stewart however was hoping for a better ride from the T260 as some additional changes had been made after the Mosport event.  The rear suspension geometry had been revised and the wing relocated a little further to the rear of the car.  But in practice and qualifying the car still proved to be hard work.  Stewart nevertheless managed to qualify the T260 2nd, just three tenths slower than Hulme’s pole time and 1.8 seconds better than Peter Revson’s 3rd place time in the second M8F.  Though Hulme maintained a lead for much of the race, he didn’t really get away from the Lola and when he flagged in the latter stages, Stewart was able to get past and take his car through to its maiden victory.

Stewart closes in on Hulme at Mont Tremblant, June 1971

Road Atlanta hosted Round 3 in mid-July.  Stewart qualified 3rd, a full second off Hulme’s pole time.  The race was a mixed bag for the Lola – Stewart hustled it enough to record the race’s fastest lap, and moved up past Hulme and Revson into the lead.  However, the T260 then suffered a rear tyre puncture and the pit stop to fix this became prolonged when the engine cut and didn’t want to restart.  Although running at the finish, the car was several laps down having also developed a rear damper failure – a disappointing outcome as it had clearly had the beating of the McLarens on track. 

Stewart and the T260 were quickest at Road Atlanta until a tyre punctured. (Courtesy Autosports Marketing Associates)

A fortnight on, the Can-Am circus reconvened at Watkins Glen.  Perhaps helped by his familiarity with the Glen from his Grand Prix drives there, (as was the case too at Mosport, and, to a lesser extent, Mont Tremblant), Stewart put on another strong qualifying show, just pipping Revson and Hulme to the pole.  Next day he held a comfortable lead until a little past the halfway point, when a driveshaft failure intervened and forced retirement of the car.

Stewart enjoys a clear lead over the McLarens at Watkins Glen. (Courtesy Motor Sport Images)

Round 5 must have felt like ‘back to square one’ – the Mid Ohio circuit, like the opening, Canadian, rounds’ venues was something of a car breaker, being notable bumpy.  In qualifying the McLarens handled this better than the Lola – Hulme’s pole time was nearly a second quicker than Stewart’s 3rd place lap.  But it was fortunate that the T260 was not further down the grid as it had been afflicted with multiple suspension failures during practice.  The confidence evident in Stewart’s demeanour at the Glen was also undermined by his perception of Mid Ohio as a particularly dangerous track with limited run-off areas and a host of trackside hazards.  He was forthright on Sunday morning in saying how dissatisfied he was with the place and that he didn’t intend to run at anything like his or the car’s full performance potential.  Thus it seemed somewhat paradoxical that following the demise of both the M8Fs with driveshaft failures, Stewart was able to chalk up his second victory of the season.

The T260 at Mid Ohio – note how much further back the wing is by now mounted. (Courtesy Niagara Pauls Blogspot)

In late August the second half of the series opened with the 6th Round at Road America, (Elkhart Lake).  With the Mid Ohio win serving to re-boost confidence and signs that the long-established McLaren superiority might be faltering with reliability issues, there was good reason to expect that Stewart would be hunting Hulme and Revson down for the points table lead.  As an added positive, the Haas team was also keen to be more adventurous in its efforts to improve the car’s handling and aerodynamic behaviour – the chronic understeer still being a real issue for Stewart.  Thus, the car appeared at the Wisconsin circuit with a fully reworked rear end – an even larger-surface (and higher incidence) rear wing, with substantial end plates integrated with the rear quarter panel sides.  This was combined with a new ‘shovel’ form spoiler running across the bottom edge of the nose.

The new rear wing and front spoiler at Road America. (Courtesy Jim Buell)

Practice and qualifying threw up some surprises.  Whilst Hulme secured the pole with a time 2 seconds quicker than his nearest challenger, that competitor wasn’t teammate Revson – or even Stewart.  Finally coming good was the controversial Shadow Mk.2 of Jackie Oliver.  Stewart was 3rd, but apparently hampered by a lack of power.  The team bit the bullet and changed the engine for the race, but this overheated and failed after just 10 laps.  So it was an unsatisfying end to the weekend with uncertainties remaining, especially in regard to the car’s aerodynamics, the original rear wing form having been reinstated and no conclusions reached about the persistent understeer.  Broadley was struggling to understand cause and effect, though he had demonstrated his perspicacity in wondering how well the body surface holes were relieving under-floor pressure when the gauze covering of many of them was clogged with paint required for the L & M livery!  One could not help but wonder if the car was founded on an aerodynamic theory full of holes.
 
With five Grand Prix wins up to August 1st, Stewart was assured of his second World Championship by the time of Round 7 of the Can-Am at Donnybrooke.  He was no doubt philosophic about the contrast between his successes and confidence in his Tyrrell and his results with the Lola, to say nothing of how little he’d been enjoying driving the Group 7 car.  The team would have hoped to have had him smiling a little more by effecting some rear suspension upgrades following the Road America event.  But hope was outdone by reality in this instance – the McLarens seemed to be getting better after the mid-season frailties, whereas the Lola’s handling continued to tax Stewart’s patience.  With no improvement clearly obvious from the revisions tried at Road America, the rear wing form reverted to the original format.  As was becoming the pattern, Stewart was 3rd in qualifying, not especially close to the times of Hulme and Revson.  Nonetheless, the Lola got off the line well and headed the M8Fs initially until Revson went past for the lead.  Stewart was able to hold Hulme behind him, but various troubles led to pit stops that hampered Stewart’s progress to the extent that he could finish no better than 6th.

Stewart stays 2nd  in front of Hulme at Donnybrooke. (Courtesy Tim Winker)

Late September saw the Can-Am back in Canada, at Edmonton for Round 8.  There was a further revised, tacked-on ‘shovel’  panel in place to give the nose a more scoop-like profile and almost all of the rear wing depth was now behind the back edge of the rear panel.  The effectiveness of these changes was difficult to judge in the track conditions and Stewart’s qualifying performance could once again not achieve anything better than 3rd.  In the race, his ultra-smooth skills enabled him to take and maintain the lead on a wet circuit.  Eventually, however, he had an off, and this apparently caused some damage, as the T260’s handling was subsequently less manageable.  It nevertheless remained one of the car’s better days, as Stewart was able to run to the finish headed only by Hulme’s McLaren.

On the grid at Edmonton – note the revised front end and the extreme rear location of the wing. (Courtesy TheRoaringSeason)

Laguna Seca was the location for the penultimate round.  Despite Stewart’s big and unsalvageable points deficit vis-a-vis the McLarens, effort was ongoing to try and give him a car which could match his other-worldly driving expertise.  This time there was some astonishment when it was seen that the front of the car was no longer just being augmented with a relatively small re-profiler – it now had a substantial tubular structure projecting forward of the nose, supporting a large, full-width aerofoil which was promptly nicknamed, ‘The Cowcatcher.’  The rear wing remained distinctly rearward of the back panel and run at a steeper angle of attack than as seen at Edmonton.  The T260 had begun the season as the ultimate ‘stubbie’ but now boasted an exceptionally long footprint.

New wings, front and rear, at Laguna Seca. (Courtesy TheRoaringSeason)

In qualifying, Stewart was within a second of Revson and Hulme, the former taking pole.  However, the Lola was 4th on the grid as the Mk.2 Autocoast Ti22 was three tenths quicker in the hands of David Hobbs.  The Ti had less race pace and was soon displaced on the Sunday by Stewart who further progressed by passing Hulme for 2nd.  Revson struggled with an ailing engine to finish the race but hung on to take the win.  There was some post-race confusion as it was contended by the Haas team that Revson should have been black flagged and the race awarded to the Lola.  However, Revson’s victory was subsequently upheld, so Stewart had to be content with 2nd – itself by no means a bad result.

Though looking unwieldy with its front and rear ‘extensions,’ Stewart was able in the T260 to outpace Hulme’s M8F at Laguna Seca. (unattributed, via Bonhams)

The teams were at Riverside at the end of October to close out the Cam-Am series.  The T260 made its way to its customary 3rd fastest in qualifying.  Stewart took it past Revson and settled into a secure but lonely 2nd place until the engine failed with 3/5 of the race run.

Final aerodynamic tweak for the T260 is substantial end plates for the rear wing. (Courtesy Lola Heritage)

On face value, the final series points table for the top three suggested ‘business as usual’ for McLaren.  However, Stewart and the T260 had provided the most substantial challenge for a very long time to the dominance of the M8s.


Although there was never any prospect of Stewart committing to another season with Haas, it’s reasonable to suppose that with a winter of development and a new, ambitious driver, the wins tally could have been considerably greater than just two in 1972.  However, the obdurate handling problems of the T260 had taken their toll.  For Lola, the attraction of a new start became irresistible, and thus Broadley laid down a brief for the T310 – a Can-Am car that was long and wide and looking not at all related to its short and stubby, highly characterful, predecessor.  But I have to leave the last word to Sir Jackie: I enjoyed working with Carl Haas in 1971, but the car had been a dog to drive . . .


Tuesday, March 15, 2022

Corse Alfasud

When I started working at BMW Concessionaires GB Ltd in 1971, our cars were not ten-a-penny on London’s more affluent streets. The trendy thing to drive then was an Alfa Romeo. The 105 Series Giulia models offered a heady mix of great styling, courtesy of Bertone and Pininfarina, together with exhilarating performance reflecting the Marque’s racing successes, primarily with the brilliant GTA variant. On my first visit to Munich, I was told that with the impending Tii version of the 2002 and further development of the E9 coupe, it was hoped that Alfa would find itself with a worthy Bavarian competitor. By the time I moved to Alfa Romeo GB Ltd. (ARGB) at the end of the decade, places like Kensington and Hampstead were knee-deep in BMWs, whereas, though its UK registrations were peaking, Alfa Romeo’s reputation and market share was beginning its woeful decline. Both the sales volume zenith and the collapse of esteem for the Marque’s products were mainly attributable to the Alfasud. 

Whatever the big picture aspects of the Alfasud in terms of its commercial viability and effect on Alfa Romeo’s prestige, its specification made for the basis of an excellent small racing saloon, given its light weight, compact footprint, rev-happy flat four engine and inboard front brakes. In standard form the throttle response was very good and it was soon found that even with just the substitution of carburettor make/model – Weber or Dellorto – increased horsepower was relatively easy to achieve. With numbers of ‘Sud’s appearing on circuits in 1975 – notably in Austria - recognising the promotional potential, Alfa Romeo instituted the ‘Alfasud Trofeo’ race series in 1976. The version to be used was the 1.3 Ti which had supplemented the range in ’73, initially in 1200 cc form. The car could be modified by the use of an Autodelta-marketed kit of parts. In standard production specification the Ti’s engine produced 75 bhp, whereas a Trofeo version managed 115 bhp on the twin Webers included in the Autodelta kit. Given a minimum weight of 800 kgs, this made for a quick car, further enhanced by the other kit components which included competition exhaust, springs and dampers, wheel arch extensions and lightweight Campagnolo alloys. In Italy the series was comprised of 9 races, at Magione, Casale Monferrato, Imola, Misano, Mugello, Vallelunga, Varano, Monza and Pergusa.


The inaugural championship was won by a clear margin by Filippo Niccolini, from Claudio Pizzi.  Niccolini was the victor at five of the championship rounds.  His car was advertised for sale in 2016 by Weekend Heroes of Munich:


With increasing awareness across Europe, Trofeo series were also introduced in Austria, Germany and France.  Confirming the high level of interest from competitors, circuits and enthusiasts, 1977 also saw the establishment of a ‘Trofeo Europa Alfasud,’ bringing together the better drivers from the various national series.

The Europa series gained additional attention by the running of some rounds as support races to Formula One Grands Prix.  First champion was Italy’s Aldo Cerruti.  Notable among the Trofeo Europa competitors was Gerhard Berger, future F1 high-achiever with McLaren and Ferrari, who took seventh place in 1981.

Gerhard Berger and his Trofeo Alfasud

Alfasud Trofeo racing tended to be close and frantic, as can be seen in the photograph below:

In the UK, Alfasuds also appeared on-track in 1976, run by the Campari-sponsored Dealer Team.  Two cars were entered to the Tourist Trophy for Jon Dooley/Simon Kirby/Rex Greenslade.  Another ‘Sud was entered for this event by the stalwart Bolton dealership, Westune – drivers, Malcolm Wayne/John Myerscough. 

From 1977, examples of the Sprint variant began to compete.  In Division 1 (1300) of the European Touring Car Championship, Sprints of Team 43-70 were class winners in 9 of the 11 rounds and clear class champions.

Sprint of Marquez/Perrado (Team 43-70) at Brno, ETCC, 1977

1978 proved to be a much tougher year for the Sprints in the ETCC.  Of the twelve rounds, a Sprint was able to take the class victory at only two events – at the Nurburgring and Silverstone.  Early in the season, Fiat 128 Coupes and Alfa GT Juniors had better pace, and, later, the Skoda 130RS proved superior.  However, a Sprint was 1st in class at 5 races, and consistent results from the Belgian pair, Richard Mattozza and Jacques Berger, were a major contribution towards Alfa Romeo securing the manufacturer’s Division 1 championship.  But by the end of the decade, the ‘Sud in both Berlina and Sprint form was not a significantly competitive race car, and results were mediocre at best. 

Development of the Alfasud during the late Seventies/early Eighties took production versions’ power output up to 105 bhp, with the 1.5 litre capacity engine.  The Sprint eventually gained a 1.7 variant, and this boasted 112 bhp.  Nevertheless, neither this car, nor the ‘Sud’s replacement, the 33, were found to be a good basis for a competitive racing car.  At ARGB we dabbled with a turbocharged version of the 33, (around 130 bhp), in conjunction with Terry Drury Racing, but this too proved to be an ineffective circuit racer.  So there was quite a hiatus in motorsport terms, before the advent of the 155, which would certainly turn out to be a formidable and successful touring car for the Marque.