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SUSPENSION                                                                                                             34                   

 

 

ball joint A, used in the front lower and rear lower wishbones, must be fitted with sharp-edge side 
in

 

contact with circlip B, as shown in following drawing 

 

TIGHTENING TORQUES                                                                                                                   

This table lists suggested tightening torques. For additional security use LOCTITE 242 or 243. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Tightening torques 

 

Nm 

Kgm 

lbs ft 

Pinion bearing nut 

176 

17.9 

130 

pinion-shaft nut 

135 

13.8 

100 

Final drive bolts 

73 

7.5 

55 

Brake disc bolt 

0.7 

Brake caliper studs 

50 

5.1 

37 

Wheel nut 

165 

17.0 

125 

Wheel stud 

245 

25.0 

180 

Damper end-stroke spacer

 

65 

6.6 

49 

Wheel driver columns 

50 

5.1 

37 

Nut 7 × 1 (see hub assembly) 

17 

1.7 

13 

Bolt 8.8 (see hub assembly) 

25 

2.5 

19 

Bolt 12K (see hub assembly) 

39 

4.0 

29 

Rocker cap nut 

34 

3.5 

25 

Rocker stud nut 

54 

5.5 

40 

10-32 UNF ‘K’ nut 

0.3 

1

/

4

 UNF ‘K’ nut 

12 

1.2 

5

/

16

 UNF ‘K’ nut 

24 

2.4 

18 

3

/

8

 UNF ‘K’ nut 

50 

5.1 

37 

Summary of Contents for F303

Page 1: ...ION Front 7 11 Rear 13 14 DIFFERENTIAL 15 16 DAMPERS 17 RIDE HEIGHT 19 AERODYNAMICS 20 24 COOLING 25 UPRIGHT ASSEMBLY 26 27 SYSTEMS Oil 28 Brakes 29 Fuel 30 Extinguishers 31 GEARBOX 32 SAFETY AND UTIL...

Page 2: ...os Claes Email F3support dallara it spares Ms Silvia Cavazzoni Email F3sales dallara it On the Dallara web site www dallara it you can find useful information about the company our people and the fact...

Page 3: ...3 SIDE TOP VIEW OF THE F303 4...

Page 4: ...ith AL NOMEX honeycomb Bodywork Glass fibre composite with NOMEX honeycomb Composites HEXCEL HERCULES Castings AGUSTA FLABO ALLMAG Gearbox HEWLAND six forward gears plus reverse Gears and differential...

Page 5: ...mm 8 6 6 8 Damper static length mm 335 335 335 335 Solid spacer mm 6 6 6 6 Push rod length mm Roll centre setting STD LOWER STD STD Roll bar setting Roll pre load notches none none none none REAR Rid...

Page 6: ...m 24 1 06mm 1TURN height change mm 0 14mm 0 8mm camber change deg 6 1 toe change deg 2 3 SPRING PLATFORM 1TURN thread step mm 2 2 height change mm 1 79 2 47 WHEEL SPRING RATIO vertical Mono 0 896 Twin...

Page 7: ...luding Koni should not be used fully extended Therefore we advise to use the droop stop A Pre load is the necessary force that has to be applied to the spring to modify its length with respect to the...

Page 8: ...3 Pitch angle 28 15 2675 x 57 29 0 28 Build in castor angle becomes 10 5 0 28 10 22 corresponding to a 2 03 measured apparent castor angle each change in front and or rear ride height alters the casto...

Page 9: ...stack in running condition rocker lateral motion and the chosen pre load must never reach the Maximum Deflection see Table 6 to avoid a sudden lateral locking of the rocker Once the rocker overcomes...

Page 10: ...Mark this platform position as the zero pre load notch Turn both left and right platforms the amount of notches to set the desired pre load One turn of platform is 15 notches corresponding to 1 5mm di...

Page 11: ...length has to be shortened by 1 2 register turns 7 faces of the adjuster to keep the car at the same ride height When adjusting the roll centre height camber gain versus wheel travel varies a little...

Page 12: ......

Page 13: ...ain std value shorten by 2 turns the caster uniball Option B 2 needs special bracket for front top mounting available at Dallara OPTION Roll centre height Camber change Antisquat static ride height wi...

Page 14: ...79 6 88 7 106 9 123 0 137 2 149 8 172 3 185 9 3 5 17 5 22 9 36 6 63 5 83 9 94 2 114 9 133 8 150 7 166 0 194 2 211 5 4 4 17 8 23 4 37 9 67 5 91 0 103 1 128 4 152 5 174 9 195 8 236 3 262 5 4 5 18 0 23 8...

Page 15: ...on discs The arrangement 1 with a disc succession A B A B A has the maximum number of working friction faces It gives the maximum resisting torque The arrangement 3 has the minimum of working friction...

Page 16: ...T 16 Check the plate arrangement is equal on both sides Side gear ring diff end plate diff wall and pre load spacer all act as B plates A bigger ramp angle transmits less thrust onto the plates than a...

Page 17: ...9 REAR 291 Stroke FRONT 36 REAR 44 On Koni dampers you should always use the 8mm Teflon spacer on front assembly to prevent the rocker to lock If you plan to use alternative products check that maximu...

Page 18: ...DAMPER GRAPH 18 KONI 2812 140 100 80 60 40 20 0 20 40 60 80 100 0 20 40 60 80 100 120 V mm s F kg BUMP min BUMP max REBOUND min REBOUND max...

Page 19: ...t wheel axis With 2675mm wheelbase this gives 0 32 pitch angle 30 15 2675 x 57 29 0 32 At the front end of the car you have two alternative references Two round platforms 513 5mm from car bottom on to...

Page 20: ...FRONT WING 20 FRONT WING CONFIGURATIONS FRONT WING SIDEPLATE HOLES...

Page 21: ...21 REAR WING REARWING PROFILES REAR WING CONFIGURATION LDF MDF HDF UHDF REAR WING SIDEPLATE HOLES _____________________...

Page 22: ...FRONT FRONT FLAP MF SF A B C D E F G 1 10 11 12 13 14 15 16 2 17 18 19 20 21 22 23 3 24 25 26 27 28 29 30 4 31 32 33 34 35 36 37 REAR REAR TOP LDF A B C D E F 1 0 1 2 3 4 5 2 6 7 8 9 10 11 MDF HDF A B...

Page 23: ...REAR FRONT CFG TOP TYPE TOP SETTING LOWER FLAP TYPE FLAP SETTING MAIN PLANE CFG 1 LDF 2 3 NONE 0 5 1 2 MDF 8 3 MF 10 0 5 2 3 MDF 13 3 MF 14 0 5 3 4 MDF 21 3 MF 20 0 5 4 5 MDF 23 5 MF 26 0 5 5 6 HDF 7...

Page 24: ...e height settings are fundamental to the aerodynamic balance and ultimate performance of the car Pay attention to the changes between static setting and the dynamic values on the track MINIMUM SUGGEST...

Page 25: ...ducts to the radiators Blanking increases rear down force To keep the same balance you might need to reduce the rear top wing incidence or increase the front flap incidence The most efficient way of a...

Page 26: ...igot in position on the drive flange fit A screws washers and nuts and tighten to 41 Nm Caution this value is for 12K screws only Wheel stud removal a To reduce resistance to Loctite heat wheel stud a...

Page 27: ...27 HUB ASSEMBLY FRONT HUB REAR HUB...

Page 28: ...cuit More oil may cause excessive power consumption due to the oil squash Typically you would need a total of 4 5 litres to fit in the oil tank including the oil in the engine and hoses Check with the...

Page 29: ...29 BRAKE SYSTEM BREMBO BRAKE CALIPER ASSEMBLY Note the dark piston is the bigger in diameter from both The car features four different callipers TRAVEL DIRECTION BRAKE DISC ASSEMBLY...

Page 30: ...as a redundant caution in case one pump fails The driver can switch one or the other low pressure pump from the cockpit Available at Dallara is a SAFETY filling system with dry brake valves and a syst...

Page 31: ...d as the battery that powers it and the integrity of the wiring and its connections the tests should be performed before each race To check the battery press and hold up the power pack switch Every 2...

Page 32: ...Hewland by e mail sales hewland com To take the differential out you first need to take remove the LH side outer tripod housing which is locked with a wire ring circlip type fitting inside the RH tri...

Page 33: ...ofile for use as rear low downforce wing because these are not reinforced Use the specific wing profile available at Dallara when running the car with a rear ride height of 40mm or more check the heig...

Page 34: ...Pinion bearing nut 176 17 9 130 pinion shaft nut 135 13 8 100 Final drive bolts 73 7 5 55 Brake disc bolt 7 0 7 5 Brake caliper studs 50 5 1 37 Wheel nut 165 17 0 125 Wheel stud 245 25 0 180 Damper e...

Page 35: ...cc 61 0255 cubic inch Pressure 1 psi 0 0716 bar 1 kg cm2 1 019 bar 1 bar 105 Pa 0 1MPa 1 bar 13 95 psi Weight 1 ounce oz 28 35 grams 1 Kg 1000 grams 2 205 lb 1 pound lb 16 ounces 453 592 grams Speed...

Page 36: ...nd anyway after any major accident After first check or after any major accident it is mandatory to check the chassis every year in a centre recognised by FIA authority DALLARA is not responsible for...

Page 37: ...8 29 4 30 7 32 0 33 3 34 6 35 9 37 2 38 5 T 30x5 Blade L221 P3 45 4 41 4 42 7 44 0 45 3 46 6 47 9 49 2 50 5 T 30x5 Blade L221 P4 61 0 53 4 54 7 56 0 57 3 58 6 59 9 61 2 62 5 T 30x5 Blade L221 P5 64 5...

Page 38: ...ribute in the resistance to roll With the twin damper system especially when using soft spring and anti roll bars the contribution of the dampers to the roll resistance is not negligible MONO DAMPER S...

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