The Garage
Please feel free to browse ACME Racings previous cars.
WS-09
WS-04 ^To Top
WS04 is a small open wheeled racer, operated by a Suzuki GSX-R600, four-cylinder, four-stroke engine.
Radical design process have resulted in WS04 being the first racer in the ACME Racing stable to use a stressed engine. This has effectively: reduced weight, moved the centre of gravity rearwards, and decrease the wheelbase to enable better handling and driving characteristics.
WS04 is the first racer in the ACME Racing stable to boast a suspension system made from a removable member, and a fixed member to allow for increased ease in changing components if damage occurs.
Utilising a 6 speed sequential gearbox which is electro-pneumatically controlled by shifting paddles located behind the steering wheel, the driveline is connected to the engine through a direct gear drive, for improved efficiency, through a shortened wheelbase and reduced weight.
Tuned intake and exhaust runners maximise volumetric efficiency, and see WS04 capable to brake at 1.6 g forces, and corner above 2 g forces. WS04 is capable of accelerating from 0-100km/h in under 4 seconds.
Specifications:
Weight: 250 kg
Power: 65 hp
Engine: Suzuki GSX-R 600, custom fuel injection and exhaust, stressed dry sump. Laser Sintered Nylon Rapid Prototyped Intake.
Drivetrain: Custom 2 stage gear driven final drive (spur gear pair through epicyclic) with custom differential based on Torsen Type II. GKN Tripod joints with custom quenched and tempered 709M Chromoly, machined housings. Hollow 4340 quenched and tempered unequal length drive shafts.
Gearshift: Steering wheel mounted paddle shift signalling electronic over pneumatic actuator.
Chassis: Steel Space Frame with stressed engine and machined 7075 T651 alloy rear sub frame.
Suspension: Front pull rod, rear push rod. Double unequal length wishbones, non-parallell axes with toe control in rear. Fox DHX 5.0 dampers. No anti roll mechanism.
Unsprung: Multi piece CNC machined 7075 T651 alloy uprights with shim adjustable steering arm and lower control arm mount. Single piece hub and brake disc carrier machined from 7075 T651 alloy with custom wheel studs (rolled threads for fatigue strength). Double row angular contact wheel bearings with through bolt preload.
Electronics: Motec controller with data acquisition and traction control system. Motec Sports Dash Logger and Motec Shift Light.
Data Acquisition: 4 x wheel speed, steering wheel position, brake pressure, throttle position, 3 axis accelerometer.
Brakes: Dual front, single rear, floating, custom machined 1045 steel disc brakes with fixed Wilwood dual piston calipers. Cockpit adjustable brake bias.
Wheels: Custom 3 piece rims with CNC machined 7075 alloy centre, 114.3mm, 4 bolt PCD.
Tyres: Hoosier 13x7 RA compound
Where is it now?: WS04 is currently awaiting the manufacture of a new final drive. Cumulative damage from multiple failures in the experimental gear driven final drive resulted in a final unrepairble failure during the 2007 FSAE-A competition.
WS-03 ^To Top
Specifications:
Weight: 280 kg
Power: 75 hp
Engine: Suzuki GSX-R 600, custom fuel injection and exhaust. Laser Sintered Nylon Rapid Prototyped Intake.
Drivetrain: Chain driven final drive with turn buckle tension adjustment, custom housing for Torsen Type II differential, unequal length, hollow, welded chromoly drive shafts using Hooke’s Joints (conventional universal joints).
Gearshift: Steering wheel mounted paddle shift signalling electronic over pneumatic actuator.
Chassis: Steel Space Frame.
Suspension: Front pull rod, rear push rod. Double unequal length wishbones, non-parallell axes with toe control in rear. Fox DHX 5.0 dampers. No anti roll mechanism.
Unsprung: Integrated monocoque steel weldment upright. Camber adjustment via inboard rod ends (loaded in bending). Single piece hub and brake disc carrier machined from 7075 T651. Double row angular contact wheel bearings with threaded hollow spindle for preload.
Electronics: Motec controller with data acquisition and traction control system. Motec Sports Dash Logger.
Data Acquisition: 4 x wheel speed, steering wheel position, throttle position, 3 axis accelerometer.
Brakes: Fixed custom machined 1045 steel disc brakes with fixed Wilwood dual piston calipers.
Wheels: Custom 3 piece rims with CNC machined 7075 alloy centre, 114.3mm, 4 bolt PCD.
Tyres: Avon 13x6
Where is it now?: WS03 was decomissioned in late 2007 and cannabalised to complete the assembly of WS04. It was used for a large amount of driver training in 2007, however suffered from severe understeer. It failed to complete the endurance event in the 2006 FSAE-A competition due to a rod end that failed as it was loaded in bending.
WS-02 ^To Top
WS02 is a small open wheeled racer, operated by a Suzuki GSX-R600, four-cylinder, four-stroke engine.
WS02 was the first acme racer to use the radical petal shaped brake disc. It also was the first car to run the MoTeC ECU.
Utilising a 6 speed sequential gearbox which is electro-pneumatically controlled by shifting paddles located behind the steering wheel, the driveline is connected to the engine through a chain drive and then onto a torsen differential.
Tuned intake and exhaust runners maximise volumetric efficiency, and see WS02 capable to brake at 1.6 g forces, and corner above 2 g forces. WS02 is capable of accelerating from 0-100km/h in a little over 4 seconds.
Specifications:
Weight: 280 kg
Power: 80 hp
Engine: Suzuki GSX-R 600, custom fuel injection and exhaust.
Drivetrain: Chain driven final drive with parallel slot tension adjustment, custom housing for Torsen Type II differential, unequal length, solid drive shafts and Burfield Constant Velocity Joints from Ford Laser.
Gearshift: Left hand lever operated linkage assembly.
Chassis: Steel Space Frame with removable members for ease of engine installation.
Suspension: Front pull rod, rear push rod. Double unequal length wishbones, non-parallell axes with toe control in rear. Fox DHX 5.0 dampers. No anti roll mechanism.
Unsprung: Multi piece wire cut 7075 T651 alloy uprights with shim adjustable steering arm, lower and upper control arm mounts. Single piece hub and brake disc carrier machined from 7075 T651 alloy. Double row angular contact wheel bearings with threaded hollow spindle for preload.
Electronics: Motec controller with data acquisition and traction control system. Motec Sports Dash Logger.
Data Acquisition: 3 x wheel speed, throttle position, 3 axis accelerometer.
Brakes: Fixed custom machined 1045 steel disc brakes with fixed Wilwood dual piston calipers.
Wheels: Performance Wheels Alloy 13x6 wheels (Formula Ford), 114.3mm, 4 bolt PCD.
Tyres: Avon 13x6
Where is it now?: WS02 has proved to be an extremely reliable driver training platform still operating succesfully 3 years after completion. WS02 holds the team record at the Fairbairn Park Hill Climb. It was used as a test bed for a Anti-lock Braking System in 2006 and was repaired after being crashed into a pole (at slow speed) during driver training in 2008.
WS-01 ^To Top
Specifications:
Weight: 300 kg
Power: 75 hp
Engine: Suzuki GSX-R 600, custom fuel injection and exhaust.
Drivetrain: Chain driven final drive with parallel slot tension adjustment, custom housing for Torsen Type II differential, unequal length, solid drive shafts and Burfield Constant Velocity Joints from Ford Laser.
Gearshift: Left hand lever operated linkage assembly.
Chassis: Steel Space Frame fits up to approximately 80th percentile male.
Suspension: Front and rear push rod. Double unequal length wishbones, non-parallell axes with toe control in rear. Fox Vanilla dampers. No anti roll mechanism.
Unsprung: Solid aluminium alloy single shear upper and lower control arm mounts. Threaded upper inboard control arm mounts for camber adjustment (rod ends loaded in bending).
Electronics: Haltec ECU.
Data Acquisition: Nil
Brakes: Fixed custom machined 1045 steel disc brakes with fixed Wilwood dual piston calipers.
Wheels: Performance Wheels Alloy 13x6 wheels (Formula Ford), 114.3mm, 4 bolt PCD.
Tyres: Hoosier 13x7 RA compound
Where is it now?: WS01 was decommissioned in late 2005 and canabalised to complete assembly of WS02. WS01 was used extensively for driver training in 2006. It was retrofitted with a Motec M400 ECU and minor data logging capability. It was a very reliable driver training car but seemed to suffer from snap oversteer requiring drivers to be very alert at all times.