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Featured AC Update Assetto Corsa v1.13

Discussion in 'News Timeline' started by assettocorsamods, May 21, 2017.

  1. assettocorsamods

    assettocorsamods Administrator Staff Member

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    "It's better to be late, than to arrive ugly" - Darcy Gilmore


    In today's special: some old news :D. But you know, it's still good to have a full history here, and maybe have a look on how AC evolved. For example when AC2 will be released :). And while we're at it, let's make also a forecast - Assetto Corsa 2 will be out in 2021.

    Anyhooo.. back to our subject-matter, update v1.13 was made available to download on Steam on March 22nd (wow, time flies), featuring the Mazda MX5 NA and the Mazda 787B as FREE bonus content. Most importantly though, v1.13 also natively brought the long-awaited OpenVR / VIVE support (beta) and some fixes for Oculus users, as well as many new multiplayer features, including reversed grid races and mandatory pits with pit stops strategy presets ! Check out the following changelog for all the improvement and fixes !

    Mazda MX5 NA

    Mazda used a design credo across the four generations of the MX-5's development: the phrase Jinba ittai (人馬一体), which translates loosely into English as "rider (jin) and horse (ba) as one body (ittai)". With the first generation of the MX-5, the phrase was developed into five specific core design requirements:
    • That the car would be as compact and as light as possible while meeting global safety requirements.
    • That the cockpit would comfortably accommodate two full-stature occupants with no wasted space.
    • That the basic layout would continue with the original's front-midship rear-drive configuration with the engine positioned ahead of the driver but behind the front axle for 50:50 weight distribution.
    • That all four wheels would be attached by wishbone or multi-link suspension systems to maximize tire performance, road grip, and dynamic stability.
    • And that a power-plant frame would again provide a solid connection between the engine and rear-mounted differential to sharpen throttle response.
    The first generation (NA) of the MX-5 was unveiled at the Chicago Auto Show on February 10, 1989. Demand initially outstripped production, fueled by enthusiastic press reviews.


    The body shell of the NA was all-steel with a light-weight aluminium hood. Overall dimensions were 3,970 mm (156 in) in length, 1,675 mm (65.9 in) in width, and 1,235 mm (48.6 in) in height. Without options, the NA weighed only 2,150 lb (980 kg). Drag coefficient was indicated as 0.38. Suspension was an independent double wishbone on all four wheels, with an anti-roll bar at the front and rear. Four-wheel disc brakes, ventilated at the front, were behind alloy wheels with 185/60HR14 radial tires. The base model came with stamped steel wheels from the then-current 323/Protege.

    The original MX-5 came with a 1.6 L (98 cu in) dual overhead cam inline four-cylinder engine, producing 86 kW (115 bhp) at 6500 rpm, and 136 N·m (100 lbf·ft) of torque at 5500 rpm. The engine employs an electronic fuel injection system using a vane-type air flow meter and an electronic ignition system with a camshaft angle sensor instead of a distributor. This engine, codename B6ZE(RS), was specifically designed for the MX-5 and featured a lightened crankshaft, flywheel, and aluminum sump with cooling fins.

    The standard transmission was a five-speed manual, a unit derived from the one used in the Mazda 929/Luce (also rear-wheel drive). The gear shift was the subject of close attention during development, with engineers told to make it shift in as small a gear pattern as possible and with minimal effort. In Japan and the US, an optional automatic transmission was also offered but proved to be unpopular. The Japanese and American markets also received an optional viscous limited slip rear differential, although it was only available for cars with a manual transmission. To achieve the low introductory price, the base model was stripped. It had steel wheels, manual steering, roll-up windows, and no stereo or air-conditioning. Power steering, air-conditioning, and stereo were added as standard equipment in later years.

    The NA could reach 60 mph (97 km/h) in 8.3 seconds and had a top speed of 126 mph (203 km/h) although Japanese market Eunos models were limited to 112 mph (180 km/h). This first generation of Miata (often referred to as the NA) included a special Limited Edition of 250 examples in 1991, produced in British racing green with the first use of tan interior, to celebrate the highly successful launch of the MX-5 in the UK.[citation needed] These have a numbered brass plaque on the dash above the glovebox and on the front of the Owners Book, and are fitted with alloy wheels from MSW (Mazda Sports Workshop) which are often mistaken for BBS's, but which are entirely unique to this model. [source]

    mazda_mx5.jpg


    Mazda 787B
    The Mazda 787 and its derivative 787B are Group C sports prototype racing cars that were built by Mazda for use in the World Sportscar Championship, All Japan Sports Prototype Championship, as well as the 24 Hours of Le Mans from 1990 to 1991. Designed to combine a mixture of the Fédération Internationale du Sport Automobile (FISA) Group C regulations with the International Motor Sports Association (IMSA) GTP regulations, the 787s were the last Wankel rotary-powered racing cars to compete in the World and Japanese championships, using Mazda's R26B engine.

    Although the 787 and 787B lacked the single lap pace of World Championship competitors such as Mercedes-Benz, Jaguar, and Porsche, as well as Japanese Championship competitors Nissan and Toyota, the Mazdas had reliability which allowed them to contend for their respective championships. The reliability of the cars eventually paid off in 1991 when a 787B driven by Johnny Herbert, Volker Weidler, and Bertrand Gachot went on to victory in the 1991 24 Hours of Le Mans. This remains as of 2016 the only victory by a Japanese marque as well as the only victory by a car not using a reciprocating engine design.

    A total of two 787s were constructed in 1990, while three newer specification 787Bs were built in 1991.

    At its heart, the initial design of the 787 was an evolution of the 767 and 767B designs that had been used by Mazda in 1988 and 1989. Many mechanical elements of the 767 were carried over by Nigel Stroud when he designed the 787, but with some notable exceptions. Foremost was the replacement of the 767's 13J Wankel rotary engine. In its place, the brand new R26B was installed. The custom-built R26B featured a nearly identical layout and displacement, but included new design elements such as continuously variable intakes and three spark plugs per rotor instead of the 20B's two. This allowed for a maximum power output of 900 hp (670 kW) which was limited to 700 hp during the race for longevity. Porsche's five-speed gearbox was retained.

    Other modifications made to the 787's design included a relocation of the radiators. Initially placed beside the cockpit on the 767, a new single radiator was integrated into the nose of the 787. Air moved from the blunt nose of the car underneath the bodywork and through the radiator before exiting at the top of the nose. A Gurney flap was affixed to the radiator exit to increase front end downforce. This new radiator location also meant a redesign of the doors of the car, where the old radiator design had been located. The intake in front of the door and exit behind were no longer necessary and were thus not included, giving the 787 a smoother bodywork design on top. To aid in rear engine and brake cooling, intakes were placed on the side bodywork, immediately above the exhaust cooling vents. [source]

    mazda_787B.jpg

    787B
    Following the 1990 season, Mazda continued development of the 787 chassis in order to make improvements on its pace and reliability. One major development was the intake system for the rotaries. In the past, Mazda had developed variable length telescopic intake runners to optimize engine power and torque for varying rpms. For 1991, the system became continuously variable, rather than previous versions that had steps for different engine ranges. The 787B's onboard ECU controlled the action of the telescopic intake.

    And last, but not least, for those having the Porsche Pack 3, this beauty as "free", to complete the Pack:

    The Porsche 911 RSR 2017.
    Engine
    Water-cooled six cylinder boxer, positioned in front of the rear axle; 4,000 cm3, stroke 81.5 mm, bore 102 mm; ca. 375 kW (510 hp) depending on restrictor; four-valve technology; direct fuel injection; dry sump lubrication; single mass flywheel; power output limitation via restrictor; electronic throttle.

    Transmission
    Six-speed sequential constant-mesh gearbox; two-shaft longitudinal layout with bevel gear; shifting via electronic shift actuator; shift paddles on steering wheel; magnesium gearbox casing; multi-disc self-locking differential with visco unit; three disc carbon race clutch.

    Body
    Weight-optimised chassis in combined aluminium steel design; removable roof hatch for cockpit access; lifting bushes integrated in the roof; FT3 fuel cell in front of the car; welded-in roll cage; seat pursuant to FIA 8862-2009; rigidly mounted to the chassis; six-point safety harness for use with HANS®; longitudinally adjustable pedalry; bodywork made of CFRP, quick-change; rear wing with “swan neck” mounts; four-post air jack system with safety pressure valve; electronically activated fire extinguisher system; heated windscreen.

    Electrical System
    Cosworth Central Logger Unit; CFRP multi-functional steering wheel with integrated display; shift paddles and quick release; Collision Avoidance System; controlled alternator in connection with LiFePO4 battery; LED headlights; LED taillights plus rain light; illuminated car number and leader light system; black light inside cockpit; electric adjustable wing mirrors with memory function; tyre pressure monitoring system (TPMS); drink system; air conditioning system; membrane switch panel on centre console with fluorescent labelling.

    Weight Approx. 1,243 kg (base weight as per rules)
    911_RSR_2017.jpg

    After this (long) deviation down the history lane, here's the complete log of the update:


    Code:
    1.13
    - New Porsche 911 RSR 2017 for Porsche Pack 3
    - New Mazda MX-5 Miata NA
    - New Mazda 787B: mod skins made for the original 787B mod will need to be updated using the new template
    - Added Pitstop arrows to DirectInput Dpad: bind to the wheel dPad: can be overidden setting Documents/Assetto Corsa/cfg/controls.ini [ADVANCED]DPAD_INDEX_OVERRIDE=0
    - Added Pitstop quickmenu + Setup pitstop strategy: this can be custumized and disabled by system/cfg/pitstop.ini [SETTINGS]USE_MOUSE_PITSTOP=0
    - Updated Fanatec library to support new wheel bases.
    - Fixed possible CPU warning when player gets retired.
    - Multiplayer features:
       - Added reversed grid races: the race session will be restarted in reversed grid order based on the standings of the previous race. Players disqualified in the first race will start from the back of the grid in the second race, regardless of their position being within the reversed grid range.
    - Added locked entry list in pickup mode: same as in booking mode, only players already included in the entry list can join the server (password not needed).
       - Added car Steam ID sharing in entry list: each car in the entry list can feature multiple GUIDs. Players can share that car (one at once). The name inserted in the entry list is used as driver name.
    - Fixed server result log not displaying invalid laps.
       - Fixed end-of-race session status for lapped players in lap races.
       - Added Mandatory Pit: a pit window can be added to the race session. As a design choice, players need to stop at their pit box within the pit window to have a valid pit stop. Players with pit boxes further down the pitlane need to take this into account before deciding on their strategy. Players may make additional pit stops before and after the pit window, but only making a mandatory stop in the indicated pit window will validate their race. Server admins must decide on a pit window that allows all players, regardless of their pit box position, to comfortably make a pit stop under normal racing conditions.
    - Updated Shared Memory
    
     
    Last edited: May 21, 2017
  2. assettocorsamods

    assettocorsamods Administrator Staff Member

    Joined:
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    Code:
    1.13.1
    - Fixed Porsche 911 RSR 2017 technical description text
    - Fixed Mazda MX-5 NA automatic clutch assist.
    - Small adjustments to Mazda MX-5 NA aero drag, wheels inertia and other bits and bytes here and there.
    - Improved Mazda MX-5 NA British Racing Green and Montego Blu skins
    - Fixed mouse steering getting stuck in MP when pressing ESC
    - Fixed Mazda MX-5 NA shifting animation speed
    - Fixed OpenVR rendering with PP off and AA off
    - Added OpenVR app to set Render Multiplier (Supersampling)
     
  3. assettocorsamods

    assettocorsamods Administrator Staff Member

    Joined:
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    Code:
    1.13.2
    - Fixed Setup delete function not removing preset files
    - Fixed Pitstop Quick Menu Fuel value when setup is fixed
    - Added special events for latest free content
    - Fixed Flag with VR and PP off
    - Added pupillary distance management on OpenVR app (it may affect world scale feeling)
    - Tweaked downshift protection indicator position to scale with screen resolution
    - Added more log debug for Downshift Protection
    - Pitstop Quick Menu Wing is now relative instead of absolute
    - Fixed BMW 1M rear street tyres wrong wear values