Radical Sportscars SR3 XX Owner's Manual
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Radical Sportscars SR3 XX Owner's Manual

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QD163-1
V 1.0

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Summary of Contents for Radical Sportscars SR3 XX

  • Page 1 QD163-1 V 1.0...
  • Page 2 QD163-1...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Introduction ............................5 1. Introduction To Your Car ........................6 1.1 Cockpit Layout ........................... 6 1.2 Steering wheel Layout ........................ 6 1.3 Engine Bay Layout ........................7 1.4 Front Suspension Layout ......................7 1.5 Rear Suspension Layout ......................8 1.6 Electrical Hardware Location .......................
  • Page 4 8.1 Non starting ..........................35 8.2 Charging Issues ........................36 8.3 Gearshift Issues ........................37 9. Reference Material ........................38 9.1 Dry Sump Layout ........................38 9.3 Engine And Gear Drive Unit ..................... 39 9.4 Suspension Components ......................40 9.5 Braking System ........................41 9.6 Torque Guide ..........................

  • Page 5: Introduction

    INTRODUCTION Dear Radical Owner, Thank you for purchasing your Radical SR3 Since its launch in 2001 we have continually developed, refined and improved the SR3 into a truly unique Sportscars. Now in its 4 generation the, SR3 has sold over 1300 units cementing its place as the wor most widely produced and successful prototype style Sportscar.

  • Page 6: Introduction To Your Car

    1. INTRODUCTION TO YOUR CAR 1.1 COCKPIT LAYOUT ECU Data Port Aim Data Port Fire Extinguisher Master Switch Extinguisher Button Brake Bias PDM Power Rainlight Main Lights Start/Stop Ignition Switch 1.2 STEERING WHEEL LAYOUT Neutral button Radio button Flash button Marker button Memory/ OK button Display...

  • Page 7: Engine Bay Layout

    1.3 ENGINE BAY LAYOUT Water swirl pot Air box Rear Light Connector Fuel pump out connection Gear Drive Unit Oil catch tank Dry sump oil tank Rear air jack 1.4 FRONT SUSPENSION LAYOUT Top Wishbone Rocker Track rod Upright Spring/Damper Pushrod Roll Bar Lower Wishbone...

  • Page 8: Rear Suspension Layout

    1.5 REAR SUSPENSION LAYOUT Top Wishbone Rocker Roll Bar Spring/Damper Pushrod Driveshaft Upright Lower Wishbone 1.6 ELECTRICAL HARDWARE LOCATION On the right-hand side of the SR3 cockpit you will find an access panel, behind this are the following items: o ECU o Barometric pressure sensor To remove the ECU, undo the 4 bolts holding the plate on, then the two bolts in the bracket for the ECU.
  • Page 9 On the left-hand side of the SR3 cockpit you will find an access panel, behind this are the following items: o PDM o Charging module (24V charging option) o Auxiliary battery (24V charging option) QD163-1...

  • Page 10: Pdm Status Window

    1.7 PDM STATUS WINDOW On the PDM is a status window which shows the operation of the PDM. On the right-hand side of this window is the power (ON) and status (STS) lights. When the unit it powered on these should always be green.

  • Page 11: Reverse Lever Location

    1.8 REVERSE LEVER LOCATION The reverse lever is loca as shown below: The lever moves a gear in the Gear Drive Unit putting the output drive into reverse. To engage reverse gear the car must be stationary and in neutral. Push the lever forwards until the gear is fully engaged.

  • Page 12: Running Your Car

    2. RUNNING YOUR CAR Upon delivery of your new car it is recommended you check the following items: o If the car has been shipped, be sure to check the tracking of the front and rear wheels, it is possible that the securing straps may have been overtightened and pulled the car out of alignment.

  • Page 13: Pre-Session Checks

    2.1 PRE-SESSION CHECKS Despite all the thorough checks which are carried out on all our cars before they leave the factory, it is important you also do some basic checks before you take the car to the track for the first time. o Torque the centre lock wheel nuts to 260lb/ft.

  • Page 14: Driver Controls

    2.2 DRIVER CONTROLS S T A R T I N G T H E CA R To start the car, turn on the master isolator switch and the touchpad will light up. Press master switch button on the touchpad and the Steering wheel and ECU will power up. Press the ignition button to turn it on and finally you can press start/stop button to startup the car.
  • Page 15 S T OP P I N G T H E CA R Use the start/stop button to turn off the car. Do not turn the car off via the master switch, unless in an emergency. K eep in g t h e m a s t er s w it ch t u r n ed on a f t er t h e en gin e h a s s t op p ed r u n n in g a llo w s t h e coo lin g f a n a n d w a t er p u m p t o con t in u e t o r u n t o p r ev en t h ea t s oa k .

  • Page 16: Adjusting The Seat And Pedals

    2.3 ADJUSTING THE SEAT AND PEDALS The pedals and seat can be adjusted to suit the driver. Sea t Ad ju s t m en t : The seat is fitted on sliding rails which can be adjusted by loosening the 6 bolts on the seat. There are two M6 nylocs, one either side at the top of the seat between the chassis, two M6 button heads at the base of the seat and two M6 cap heads at the front lip of the seat.

  • Page 17: New Car Shakedown

    3. NEW CAR SHAKEDOWN At Radical, we pride ourselves on our quality control and rigorous testing procedures that we have in place for every new car. All new cars are subject to a 100 point post production inspection and track simulation on our rolling road dynamometer prior to delivery.
  • Page 18 RUN 3 (5 LAP RUN) Driver: o During this run build up to full brake pressure, and use the full rev range before shifting (10,000rpm). Technician: o Check the brake discs, up sufficiently. Allow the brakes to cool once again and remove the blanking on the ducts for the next session o Check the tyre pressures o Check for play in the wheel bearings...

  • Page 19: Bedding In The Brakes

    3.2 BEDDING IN THE BRAKES This procedure should be followed each time new discs are fitted to your car: o The brake ducts should be ¾ blanked off in order to allow the brakes to warm up through the bedding in period, previously bedded pads should be used if possible.

  • Page 20: Tyre Management

    4. TYRE MANAGEMENT The table below shows the suggested running pressures and pressures for race tyres: Hankook Cold Starting Pressure Slicks Wets Hankook Hot Pressure Slicks Wets o Please note that the starting pressures are to only be used as a guide; conditions on the day will alter where you should start your pressures.

  • Page 21: Workshop Car Maintenance

    5. WORKSHOP CAR MAINTENANCE After every day the car has run the car should be inspected thoroughly in a workshop environment. 5.1 LIFTING YOUR CAR A I R J A CK S In order nto the fitting as shown in the picture below. Slowly build up the pressure in the regulator, until the car is fully off the ground.
  • Page 22 J A CK I N G P OI N T S The front jacking point is in the centre of the front diffuser, just under the front chassis rail. As shown in the picture. The rear jacking point is under the rear diffuser in the centre of the car, a welded bar protrudes the diffuser around the mid-point.

  • Page 23: Car Setup

    6. CAR SETUP When the car leaves the factory, it will have a base setup on the car which is displayed below. This is a setup which has shown to work, eds as they feel more comfortable with the car. 6.1 HOW TO SET UP THE CAR Setting up the Radical may seem a daunting task at first;...

  • Page 24: Hankook Setup Sheet

    6.4 HANKOOK SETUP SHEET...

  • Page 25: Hankook Drop Heights

    6.6 HANKOOK DROP HEIGHTS shown in the picture on the left FRONT REAR Measuring to Rocker Pivot To Front Bush on Rear Top Wishbone Bolt Front Drop Height Chassis Height Calculated Ride height under Rear Drop Height Chassis Height (mm) (mm) lowest point on chassis (mm) (mm)

  • Page 26: Dampers

    6.7 DAMPERS R eb ou n d : the damper will return out. This can be used on the front to fix mid-corner understeer, and on the rear to aid traction. This adjuster has approximately 50 clicks from fully closed. High s p eed b u m p com p r es s ion : High speed bump compression (refers to the speed of the piston rod into the damper) controls the high frequency compressions of the damper.

  • Page 27: Wet Weather Set-Up

    6.8 WET WEATHER SET-UP When you venture into the wet conditions, the car setup can be altered in order to give the driver the best chance of staying on the circuit. Shown below is a guide to the changes to make to the car in the wet. Camber Do NOT Do NOT...

  • Page 28: Car Servicing

    7. CAR SERVICING 7.1 FILTER SERVICING Oil Ch a n g e - We recommend changing engine oil every 6 hours. To do this remove the large oil pipe from the bottom of the oil tank, located in the right-side pod, underneath the engine cover. There will be a small amount of oil left in the engine, to drain the last bit of oil remove the 17mm sump bung on the side of the sump pan.

  • Page 29: Wheel Speed Sensor Setup

    7.3 WHEEL SPEED SENSOR SETUP Use the jig for setting the wheel speed sensor (AT0042). Using a pair of 13mm spanners, set the wheel speed sensor no closer to the pickup point than the thickness of the Wheel Sensor Gauge (2mm). The pickup point is the end of the brake disc bolts on an SR3.

  • Page 30: Servicing The Gear Drive Unit

    7.6 SERVICING THE GEAR DRIVE UNIT The Gear Drive Unit contains the final drive for a SR3, there are 4 ratio options to choose from dependent on the nature of the circuit. These can be found in the appendix of this manual. Below is a step by step guide to help with changing the ratios in the GDU: 1.

  • Page 31: Filling The Gear Drive Unit With Oil

    7.7 FILLING THE GEAR DRIVE UNIT WITH OIL The oil should be filled through the top oil pipe (oil cooler return) pictured below. The adapter must be removed. The GDU will take roughly 1.5L from empty, the correct level is just as the oil starts to come out of the side bung.

  • Page 32: Radical Spin Safe Clutch Setup (If Fitted)

    7.8 RADICAL SPIN SAFE CLUTCH SETUP (IF FITTED) Check the clutch pedal travel, it MUST NOT exceed 15mm, this could cause damage to the clutch. 1. When adjusting the slave, as a starting point you should wind the adjuster flush with the body then wind the adjuster in 2-3mm.

  • Page 33: Checking The Starter Motor After A Spin

    7.9 CHECKING THE STARTER MOTOR AFTER A SPIN In the event of a spin, if the clutch is not depressed and the engine spins backwards, there is a chance that the starter and opposing gears can get damaged. If there are any doubts over whether the engine is damaged after a spin, it should not be started again prior to inspecting the starter motor.

  • Page 34: Tpms Setup

    7.10 TPMS SETUP Overview: Each wheel sensor is coded to an individual car receiver. Each sensor is also coded to a specific position (FL, FR, RL, RR). Wheels need to always be fitted to the programmed corner for the system to work. You can use alternative wheels on each corner, but they need to have sensors fitted with the same programmed ID for that corner.

  • Page 35: Troubleshooting

    8. TROUBLESHOOTING 8.1 NON STARTING Check life data- likely to be Does the engine run Contact Radical engine trip (Refer to Data for 5 seconds? Analysis Manual) Check rear battery Less than Recharge/Replace Does the PDM Power on? voltage Battery Check Touchpad operation then Starter motor More than/equal Motor...

  • Page 36: Charging Issues

    8.2 CHARGING ISSUES Your SR3 should be charging between 13.5-14.5 V when running on circuit. If you see it running below this, me sort of issue with the charging of your car. After each run it is important to check the eing in below guide on how to diagnose the problem and deciding on the solution.

  • Page 37: Gearshift Issues

    8.3 GEARSHIFT ISSUES When first discovering a gear shifting issue, it is important to first follow a few steps before attempting any remedy for the issue. shifts have been disallowed due to a breach in the cars normal parameters, TPS Too High/RPM Too High etc.

  • Page 38: Reference Material

    9. REFERENCE MATERIAL 9.1 DRY SUMP LAYOUT Engine Breather Oil Tank Catch Tank Oil Screen Sump Bung Main Oil Feed Oil Screen Scavenge Cooler Pump...

  • Page 39: Engine And Gear Drive Unit

    9.3 ENGINE AND GEAR DRIVE UNIT QD163-1...

  • Page 40: Suspension Components

    9.4 SUSPENSION COMPONENTS ft/lb lubricate ft/lb lubricate QD163-1...

  • Page 41: Braking System

    9.5 BRAKING SYSTEM 80 ft/lb QD163-1...

  • Page 42: Torque Guide

    9.6 TORQUE GUIDE D R I V E S Y S T EM S To be used as a guide only, nuts and bolts should be checked often and tightened as necessary. A3R /SR 3: Drive Unit Ratio Nuts 648 Loctite/Peened 80 Ft/Lbs Drive Unit Crownwheel Bolts 648 Loctite/Lockwire...
  • Page 43 Advisory generalized bolt torques: B olt s ize/Th r ea d p it ch Gr a d e 2 Gr a d e 5 Gr a d e 8 1/4-20 1/4-28 5/16-18 5/16-24 3/8-16 3/8-24 7/16-14 7/16-20 1/2-13 1/2-20 9/16-12 9/16-18 5/8-11 5/8-18...

  • Page 44: Engine Control Parameters

    9.7 ENGINE CONTROL PARAMETERS Fea t u r e P a r a m et er Coolant Fan On Coolant Fan Off High Coolant Temperature Trip Low Fuel Pressure Trip 2.2bar Low Oil Pressure Trip 50psi @ 10,000rpm (RPM Dependant) Rev Limit 10,500rpm Fuel Pressure Target...

  • Page 45: Fluids

    9.9 FLUIDS Below is a list of all the fluids that you will need to run your SR3, including part numbers and quantities required: Radical recommends the use of Motul engine oil. Type Part Number Capacity Brand Viscosity/Type Required Engine Oil EO0048 Motul 300V 15W/50 4T Factory Line...

  • Page 46: Roll Bar Sizes

    9.11 ROLL BAR SIZES Front Soft 15.8mm Gold SN0006 Medium 19.0mm Gold SN0005 Hard 22.2mm Gold SN0004 Extra Hard 22.2mm Black SN0071 Rear Soft 12.7mm Gold SN0018 Medium 15.8mm Gold SN0017 Hard 19.0mm Gold SN0016 Extra Hard 22.1mm Gold SN0066 XX Hard 22.1mm Black...

  • Page 47: Component Lifing

    9.12 COMPONENT LIFING As the performance of our cars increases and the number of hours we log racing the cars grows, we are able . Please see below, the The chart gives the recomme reduce the timescales recommended and immediately replace damaged parts. The recommended life expectancies in no way represent a parts warranty, due to the unpredictable and uncontrolled use of these racing car components Radical will not be held responsible or accountable for any parts failure.

  • Page 48: Repacking Driveshaft Grease

    9.14 REPACKING DRIVESHAFT GREASE The driveshafts should be stripped, cleaned and re-greased every 10 hours of running. To do this, remove the driveshafts from the car, then remove the CV boot clips and slide them back away from the housing. Remove both housings and clean all the old grease in a wash tank.

  • Page 49: Standard Pre-Race/ Test Checklist

    9.16 STANDARD PRE-RACE/ TEST CHECKLIST The below checklist is intended as a guide only. This checklist is an expansion of the prep sheet which is on page 50. 1. Bodywork Check all bodywork for damage Check all the lights function Check the underside of the sidepods, diffuser and front splitter skid blocks Put the car on a stand Disarm the fire extinguisher...
  • Page 50 Clean the air filter and check the airbox bolts Check the throttle cable, full throttle, tension. Check all coolant pipes 11. Wiring Check wiring in the engine bay for chaffing and signs of heat Check HT leads Check the condition of all connectors Check the wheel speed sensor, gap (all four lights) Check wiring behind the dash Check all wiring is away or shielded from the exhaust...
  • Page 51 QD163-1...
  • Page 52 QD163-1...

  • Page 53: Hankook Setup Sheet

    HANKOOK SETUP SHEET QD163-1...

  • Page 54: Version History

    10. VERSION HISTORY 2020-08-05 V1.0 Initial public release. QD163-1...
  • Page 55 QD163-1...
  • Page 56 QD163-1...

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