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User’s manual V1.0 

M13-SJ 

Front castor measure 

 

   

   

The 

Ackerman  plate  is  not  parallel  to  the  upright

,  so  to  measure 

the  Castor  it’s  better  to 

measure the level on a gurney bolted on the 2 threads in the middle of the upright. 

 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 
 
 
 
 
 
 

Summary of Contents for Formula Ford M13-SJ

Page 1: ...User s manual V1 0 M13 SJ 1 USER S MANUAL Formula Ford M13 SJ V1 0 ...

Page 2: ... Dampers 14 Adjusting the QUANTUM Type 4 damper 15 Springs 16 Brakes 16 Discs 16 Calliper 16 Brake Bias 16 Pumps 16 Aero set up 17 Front wing 17 Rear wing 19 Water circuits 22 Main water circuit 22 Oil cooler circuit 22 Turbo cooler circuit 23 Header tank circuit 23 Air circuits 24 Front crash box fixations 24 Recommendations 25 Wheel cables 25 Battery 25 Heat protection for composite floor 25 Ped...

Page 3: ... Dampers without Wheels Rimstock aluminium System Front Rear pushrod Front 7 5 x13 Rear 8 5 x13 Brakes AP racing calipers Bearings NMB Adjustable from cockpit Steering Fitted with a quick release system Uprights Aluminium cast Aluminium hub Safety 6 points safety harness Oil tank Aluminium cast 2 5 Kg fire extinguisher Front and rear crashboxes Lateral protection protection structure Extractible s...

Page 4: ...s manual V1 0 M13 SJ 4 General dimensions Dimension mm A Height 980 B Wheelbase 2713 C Front overhang 766 D Rear overhang 572 E Front track 1833 F Rear track 1862 G Front ride height 42 H Rear ride height 47 ...

Page 5: ...m 0 09 3 78m 0 16 Camber shims 1 mm 0 5 0 24 2 05 mm 0 25 2 mm Castor 1 turn change Camber Toe Castor Height change for 0 5 more castor thread 3 8 UNF 0 05 0 05 0 49 1 28 mm 1 turn bearing 0 3 mm camber 1 2 mm ride height thread 7 16 UNF 0 12 0 2 0 61 2 44 mm 5 6 turn bearing 0 4 mm camber 1 9 mm ride height Toe 1 turn 1 face 1 6 turn for 1 mm toe thread 3 8 UNF 0 7 or 3 5 mm 0 11 or 0 75 mm 1 3 f...

Page 6: ...ual V1 0 M13 SJ 6 Front castor measure The Ackerman plate is not parallel to the upright so to measure the Castor it s better to measure the level on a gurney bolted on the 2 threads in the middle of the upright ...

Page 7: ...t Rear Camber Shims 2 mm 3 mm 1 2 Bolts 35 mm 35 mm Castor Joint 5 turns 7 turns Toe in 1 mm 1 mm Motion ratio Motion ratio MR Wheel travel Wheel rate Spring rate Damper travel MR MONO TWIN DAMPER FRONT 1 15 1 38 ROLL BAR FRONT 1 57 1 45 DAMPER REAR 1 87 1 87 ROLL BAR REAR 2 6 2 6 ...

Page 8: ... 555 8 mm Rear 578 mm 578 mm Damper Front Static Full extand 325 mm 340 mm 325 mm 340 mm Rear Static Full extand 325 mm 340 mm 325 mm 340 mm Droop at damper Front 1 mm 4 mm Rear 10 mm 10 mm Roll bar link Front 271 5 mm 155 mm Rear 110 mm 110 mm For ride height front 42mm at wheel axle rear 47mm at wheel axle or 97mm on the composite floor ...

Page 9: ...mm Rate lbs in Pre load mm SPRING 500 10 800 13 Droop mm Motion ratio Droop mm Motion ratio 1 15 1 87 Bump Rebound Bump Rebound DAMPER Static lenght mm Free length mm Static length mm Free length mm 325 340 325 340 Type Type ROLL BAR a T Bar U Bar Diameter mm Position mm Diameter mm Position mm 25 0 14 0 Lap number Number Lap number Number TYRES Pressure bars Pressure psi Pressure bars Pressure ps...

Page 10: ...ate lbs in Pre load mm SPRING 500 10 800 13 Droop mm Motion ratio Droop mm Motion ratio 1 38 1 87 Bump Rebound Bump Rebound DAMPER Static length mm Free length mm Static length mm Free length mm 325 340 325 340 Type Type ROLL BAR U Bar U Bar Diameter mm Position mm Diameter mm Position mm 18 0 14 0 Lap number Number Lap number Number TYRES Pressure bars Pressure psi Pressure bars Pressure psi Cold...

Page 11: ...e bracket Position 1 is the standard position for front mono suspension it gave maximum antisquat with the same roll centre Position 2 is the standard position for front twin suspension it gave medium antisquat To adjust the anti squat you have to change the fitting holes from the wishbones bracket as shown on the drawings and to change the castor to avoid bump steers ...

Page 12: ... 0 876 1 293 4 344 3 424 9 532 5 678 1 880 2 1170 6 166 9 193 2 234 5 288 0 359 8 457 5 595 2 105 6 121 5 146 3 178 4 220 8 278 3 359 4 56 1 64 4 77 1 82 9 115 1 144 2 184 8 0 0 200 0 400 0 600 0 800 0 1000 0 1200 0 0 5 10 15 20 25 30 Blade position mm Wheel rate N mm D16 D18 D14 D12 D10 For the mono damper roll bar the position is adjustable by the displacement of the spacer Front Bar Mono 4187 4...

Page 13: ...ll bar end 0 is the full soft position 30 mm is the full stiff position Rear Bar 72 9 86 3 107 1 133 8 168 9 216 0 281 0 92 6 110 3 137 8 173 8 221 5 285 9 376 6 52 0 61 3 75 4 93 5 116 9 148 2 190 7 32 4 38 0 46 5 57 3 71 2 89 6 114 6 16 5 19 4 23 8 29 3 36 4 45 7 58 3 0 0 50 0 100 0 150 0 200 0 250 0 300 0 350 0 400 0 0 5 10 15 20 25 30 Blade position mm Wheel rate N mm D16 D18 D14 D12 D10 ...

Page 14: ...User s manual V1 0 M13 SJ 14 Dampers The car can be fitted with any 325 mm long dampers Most common options are Quantum or Koni 2 ways dampers ...

Page 15: ... is not a problem but means care must be taken to achieve the required independent settings 4 Using a dowel pin Part Number 10 0631 000 rotate the bottom rebound adjuster to the left until a hard stop is reached The compression adjuster should then be softened by one or two sweeps The rebound adjuster should then be checked to ensure it is still set at full hard 5 Now turn the compression adjuster...

Page 16: ...4 36 SJ01 14 098 A 700 123 130 36 SJ01 14 099 A 800 141 130 36 SJ01 14 100 A 900 158 127 36 SJ01 14 101 A 1000 176 125 36 SJ01 14 102 A 1100 193 125 36 Brakes Discs Front and rear 9 5 mm thickness Calliper Front and rear SJ01 17 002 A Mounting position Front on rear of upright Rear on front of upright Brake Bias Range 11 turns Adjusment More front brake turn right Pumps Front Brake 0 70 middle pum...

Page 17: ...User s manual V1 0 M13 SJ 17 Aero set up Front wing Position Convention Angle of the flat part of the flap flap extension red line ...

Page 18: ...User s manual V1 0 M13 SJ 18 Evolution of downforce coefficient with flap angle 2 points per degree Evolution of front aero balance with flap angle 2 6 per degree towards the front ...

Page 19: ...User s manual V1 0 M13 SJ 19 Rear wing Position Convention Angle of line on top of the wing elements red line ...

Page 20: ... Evolution of downforce coefficient with upper wing angle 0 9 points per degree Evolution of drag coefficient with upper wing angle 0 5 points per degree Evolution of front aero balance with upper wing angle 1 2 per degree towards the front ...

Page 21: ... Evolution of downforce coefficient with lower wing angle 1 2 points per degree Evolution of drag coefficient with lower wing angle 0 33 points per degree Evolution of front aero balance with lower wing angle 0 8 per degree towards the front ...

Page 22: ...User s manual V1 0 M13 SJ 22 Water circuits Main water circuit Oil cooler circuit ...

Page 23: ...User s manual V1 0 M13 SJ 23 Turbo cooler circuit Header tank circuit ...

Page 24: ... 0 M13 SJ 24 Air circuits Front crash box fixations The Front crash box is fixed on the chassis with 6 M8 bolts these bolts are screwed on M8 captive nuts Each captive nut must be fixed on the chassis by 2 steel rivets ...

Page 25: ...f the car and to charge it every 6 month when you don t use it Heat protection for composite floor To avoid any damage to the composite floor it is recommended to install a thermal protection under the exhaust Pedal position sensor To avoid any risk of slipping of the cable in the accelerator pedal position sensor you can make a 3mm diameter hole at the level of the fixation of cable it allow to p...

Page 26: ...ser s manual V1 0 M13 SJ 26 Brake line protection To ensure a good protection for the brake line it is recommended to replace the heat shrink sheat covering in the area of the wishbone when it is damaged ...

Page 27: ...162 16 5 120 Rocker bolts 10 x 1 5 46 4 7 34 Drive shaft bolts on hub 8 x 1 25 29 3 22 Gear box Pinion shaft 156 15 9 115 Layshaft nut 156 15 9 115 Crownwheel nut 102 10 4 75 Loctite Driveshaft bolt 8 x 1 25 29 3 22 Brake Caliper bolt 3 8 UNC 44 4 5 33 Bolts Grade 8 8 10 9 12 9 5 x 80 0 57 0 81 0 97 6 x 100 0 99 1 4 1 68 8 x 125 2 37 3 3 4 10 x 150 4 7 6 7 8 12 x 175 8 1 11 4 13 7 K nuts 10 32 UNF...

Page 28: ... 063 pound Pressure 1 bar 14 5 psi 100 psi 6 9 bars Volume 1 gallon UK 4 55 liters l 1 litre 0 22 gallon 1 gallon UK 0 833 gallon US 1 gallon US 1 2 gallon UK 1 cubic inches ci 16 387 cubic cm 1 cubic cm 0 061 ci Rate 1 kg cm 5 6 lb in 1 lb in 0 1785 kg cm Speed 1 mile hour mph 1 6 km h 1 km h 0 625 km h Temperature 0 Celcius C 32 Fahrenheit F 0 Celcius C 273 kelvin K Temperature 0 Celcius C 32 Fa...

Page 29: ...ter mygale fr Spare parts Alexandre Sharman 33 0 386 218 626 spareparts mygale fr Technical Dany Décultot 33 0 386 218 625 decultot mygale fr Quality Gosselin Sylvain 33 0 386 218 624 gosselin mygale fr Postal address Mygale Technopole 58470 MAGNY COURS FRANCE Telephone 33 0 386 218 621 Fax 33 0 386 218 622 Website www mygale fr ...

Page 30: ...User s manual V1 0 M13 SJ 30 Appendix 1 Electronic manual ...

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