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1966 Brabham BT11 Climax 2.5, 2.7 and BRM

Pictures of the real car:

     
(sources: 1 2 3 4 5 6)

Screenshots:

       

History:

Ron Tauranac remained faithful to the conventional tubular space frame when producing the BT11 for 1964. The chassis was not significantly different from the BT7 but reflected the continuous development and refinement of the original concept. Whereas the top main tubular members of the BT7 had run below the exhaust camshaft covers of the Climax V8, on the BT11 they ran above them, cleared by overlapping butt joints on each side behind the cockpit. The right-hand joint was welded but the left-hand bolted into place to allow it to be removed for engine installation. None of the frame tubes were used to convey oil or water between the engine and radiators. Seperate pipes, round for oil and rectangular for water, ran along the sides of the car in the airstream, together with fuel lines to and from the Lucas fuel pump mounted ahead of the radiator. Wheelbase was as for the BT7, while front and rear track were increased by 2in and 3in respectively.

Four BT11 chassis were built for 1964, the first three being supplied to customers for whom Brabham was now the sole source of a competitive chassis, following the virtual withdrawal of Lotus from this market and the failure of Cooper to remain competitive. While Dan Gurney was happy to continue with his BT7, Brabham Racing Organisation (BRO) produced BT11 F1-1-64 for Jack Brabham in time for the Austrian GP. He failed to finish any of the remaining GP's due to a variety of engine problems. Of the customer chassis, Rob Walker purchased F1-4-64 together with a BRM V8 engine for Jo Bonnier, while DW Racing Enterprises purchased F1-5-64, installing a 1962 carburetor Climax engine for Bob Anderson. Anderson ran all European GP's, finishing in the points in both Holland and Austria, an impressive performance in an underpowered car. DW Racing Enterprises was the epitome of a private team; prepared in a garden shed by Anderson, the car was transported on a second-hand VW Combi, the remainder of the team comprising his French wife, who did the admin, and a machanic. Although Anderson was awarded the GPDA Wolfgang von Trips Memorial Trophy for the best private entrant of 1964, Jo Siffert was marginally more succesful with his Siffert Racing Team BRM engined F1-6-64, scoring points finishes in Germany and the USA, and also gaining the distinction of beating Jim Clark to win the non-Championship Mediterranean GP at Enna-Pergusa. In North-America the car was entered by Rob Walker, for whom Siffert would drive in 1965.

A fifth BT11 chassis was built for the 1965 season, this to replace Dan Gurney's BT7 in the BRO team. At the instigation of Gurney, BRO became the first team to be contracte by Goodyear tyres and these had an effect on the competitiveness of the team early in the season. BRO chassis features detail modifications over the 1964 versions, including a new upper wishbone for the front suspention. An articulated unit comprising, effectively, a transverse link and rearward facing radius rod replaced the previous one-piece wishbone. Along with Team Lotus, BRO was a recipient of the new 4-valve cylinder head Climax engine. While the Lotus version proved to be a winner, the BRO version was a disaster. Typically, Gurney had the engine fail on the warm-up lap of the British GP and drove Brabham's car in the race. Brabham also chose to stand down in three of the season's GPs in favour of Denny Hulme. Gurney's results were disappointing untill the second half of the season, when he was able to score three 3rds and two 2nds, putting the marque third in the Constructors' Championship. Once again, Jo Siffert was the best placed private entry of the season, his F1-6-64, now running in the colours of Rob Walker's team, had been re-chassised after an accident in the Easter Goodwood F1 race. Bob Anderson failed to finish in six starts with the DW Racing Enterprises chassis F1-5-64, it's Climax V8 updated to short-stroke specification with fuel-injection. The chassis was badly damaged in a practice accident at the Nürbugring and not seen again in 1965. Over the winter of 1964, Twickenham-based Ford dealer John Willment acquired the former Rob Walker team chassis F1-4-64 and ran it on Goodyear tyres for Australian F3/F2 driver Frank Gardner. Chassis number F1-3-64 was never built.

For 1966, despite the change of Formula 1 regulations to three litre making the Brabham BT11 obsolete, several team continued to campaign it with updated engines, waiting for cars better suited to the new rules to come along. BRO ran a BT22, basically a BT11 with slightly revised suspention geometry, early in the season for Denny Hulme with a Tasman Climax 2.5 litre four cylinder engine, untill the new Repco V8 powered BT20 was ready. This car was campaigned later in the season once more with Chris Irwin the driver at the British GP. DW Racing Enterprises ran it's BT11 with a bored-out Climax 2.7 litre unit similar to what Dan Gurney had been using in his new Eagle. Last but not least was British team owner David Bridges, who purchased F1-4-64 from John Willment and ran it with John Taylor the driver and a bored-out Tasman 1.9 litre BRM V8 engine, untill Taylor was tragically killed in the German GP. Rob Walker continued to run his BT11 one more time at the Monaco GP for Jo Siffert, his new Cooper T81 Maserati V12 not being ready in time for the event.
(sources: 1)

Update description:

This is an update for the 1966 Brabham BT11 Climax and BRM. Drop these files in the gpl folder to install the update. This means putting them in the ...\Sierra directory . Do not replace the original folders with the one in this zip archive, but rather merge them together so all files are in the same folders.

For example:

Merge folder c09 together with the original c09 folder, resulting in a single c09 folder located in the ...\Sierra\GPL\cars\cars66 directory. Do the above for all car folders to install the update.

Disclaimer:

This is not a Papyrus/Sierra product. Use these files at your own risk (although they should not harm your computer in any way). Please do not sell these files for money. This is freeware.

Thanks to:

Paul Skingley
Pascal Celton
Jackseller
Charles 'CJM' Mark
GPLEA

Main features:

new car textures based on Pascal Celton's work
new wheel textures
new engine textures
new cockpit textures based on Pascal Celton's and Jacksellers work
optional choice for the player to use Rob Walker Racing or David Bridges Racing cars for the BT11 BRM
optional choice for the player to use DW Racing car with or without striping for the BT11 Climax 2.7

 

DOWNLOAD:

 

version 1.0 (September 11, 2014) 7-zip file 7.03 MB
(right click and select 'save target as...' for 7-zip file.)
version 1.0 (September 11, 2014) ZIP file 29.58 MB

 

SRMZ forum release thread link:

here