Briggs Automotive Company (BAC) Limited is a British car manufacturer that created Mono, a road-legal sports car with only one seat. BAC is based in the city of Liverpool, United Kingdom, Mono cars are exported to 47 countries.
Background
Briggs Automotive Company (BAC) was founded by brothers Neill (Director of Product Development) and Ian Briggs (design director) in 2009. The Briggs brothers consulted for car brands including Mercedes, Porsche, Bentley and Ford on design and engineering projects, until they decided to expand their creative potential with a product from scratch.
The result was the BAC Mono, a lightweight, single-seater, open-top, road-legal sports car.
The first BAC Mono was produced in 2011 and made its inaugural public appearance at the Retro Classics show in Stuttgart, Germany.
The first iteration of the BAC Mono was originally powered by a Ford Duratec 2.3-litre four-cylinder naturally aspirated petrol engine, heavily modified by Cosworth, to produce 280bhp (209kW) at 7,700 rpm. It is mounted longitudinally and mated to an electronically controlled, paddle-shift, six-speed sequential Hewland transmission with a limited-slip differential.
The Mono weighs 540kg (1,190lb), resulting in a power-to-weight ratio of 518bhp per tonne. It delivered performance figures of 0–62mph (0–100km/h) in 2.8 seconds and a top speed of 170mph (274km/h). BAC aimed for an equal weight distribution, 48/52 front/rear, and as low of a centre of gravity as possible when designing the Mono.
The car was constructed in carbon fibre with a tubular steel driver safety cell, complete with an FIA-compliant rollover protection system - similar in concept to a DTM race car. The rose-jointed, aero-profiled pushrod suspension featured adjustable dampers that can be altered based on driving on either the road or track.
The Mono's design is said to be inspired by a science fiction aesthetic and also the robot in Bjork's music video for the song "All Is Full of Love".
In 2015, the Cosworth engine was replaced by a 2.5-litre Mountune Racing unit developing 305bhp (227kW) at 8,000 rpm. There were a number of further improvements under the skin to optimise performance, while wider chassis allowed for more room for the driver in the cockpit. The 2015 model year BAC Mono weighed 580kg, resulting in a power-to-weight ratio of 525bhp per tonne.
Performance achievements
Second-fastest Top Gear Power Lap of all time (fastest overall on road-legal tyres): 1 minute, 14.3 seconds (July 2013)
Production car lap record of 1:54.00 at the Hungaroring
Autocar's Fastest rear-wheel-drive car in the world accelerating from 0-60mph in 2018: 2.7 seconds
Production car lap record of 36.5 seconds at the Roskilde Ring (Denmark)
Production car lap record at the Anglesey Circuit by evo magazine: 1:07.70 (2016, fastest car ever tested by the magazine)
Production car lap record at Circuit Zolder, Belgium (October 2017, 1:37.10)
Goodwood Festival of Speed 2018 Supercar Shootout Champions (July 2018, 49.13 seconds – fastest ever Supercar Shootout time)
On 4 July 2019, BAC launched the limited-edition BAC Mono R at the Goodwood Festival of Speed. Mono R is a higher-performance, lighter and more advanced new generation of the original BAC Mono. The Mono R is 38bhp (28kW) more powerful and 25kg lighter than the standard Mono, at 256kW (343bhp) and 555kg which equates to a power-to-weight ratio of 461W/kg (618bhp/t).
Design
Rear view
The Mono R has main beam LED headlights centrally mounted on the nose. The vehicle has a 20mm reduction in overall height and a 25mm increase in length over the standard Mono.
Power
The Mono R's 2.5-litre, four-cylinder engine, co-developed with long-standing engine partner Mountune, has power increased by 38bhp over the Mono to deliver 256kW (343bhp). Starting with the Ford Duratec engine, BAC and Mountune increased the cylinder bore size and reduced the new billet crankshaft stroke to optimize power and torque delivery and increased the redline from 7,800 rpm to 8,800 rpm.
The new Formula-inspired ram-air inlet system provides pressurized air into an all-new throttle body and cylinder head system to further increase power, plus a higher-spec, drive-by-wire motor allows for quicker throttle response. As a result, the bespoke Mountune engine now offers a specific output of 102kW/L (137bhp/L).
Innovation
The Mono R is the first production car fully incorporating the use of graphene-enhanced carbon fibre in every body panel.[citation needed] Using the material enhances the structural properties of the fibre to make panels stronger and lighter, increasing toughness and improving thermal properties. This came as a result of an APC-funded Research & Development project into the production-readiness of graphene.
In 2022, the company announced a feasibility study into the use of hydrogen in powering the Mono, alongside clean tech company Viritech. The e-Mono study integrated a fuel cell powertrain into an existing Mono chassis, whilst minimising added weight. This resulted in the e-Mono completing a simulated lap of Silverstone Circuit two seconds faster than the combustion-engined Mono R.
Lightweight technology
BAC conducts research and development into lightweight automotive technology, especially for the use of graphene in the car body.
Combining graphene within carbon fibre enhances the structural properties of carbon to result in fewer sheets being needed to meet functional performance targets. With BAC Mono and Mono R panels, the addition of graphene ensured panels required two sheets of carbon fibre, rather than three.
A panel set that weighed 41kg before the use of graphene weighed 32kg after use of graphene.
In 2020, BAC was awarded UK Government funding to undertake its latest nano element R&D project, exploring the use of niobium in the structure of BAC Mono. The project is sponsored by CBMM, a manufacturer of niobium products.