Mygale Formula Ford M13-SJ User manual

User’s manual V1.0 M13-SJ
1
USER’S MANUAL
Formula Ford M13-SJ
V1.0

User’s manual V1.0 M13-SJ
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Contents
Contents..............................................................................................................................2
Characteristics...................................................................................................................3
General dimensions..........................................................................................................4
Setup adjustments ............................................................................................................5
Front castor measure........................................................................................................6
Camber –Castor –Toe.....................................................................................................7
Motion ratio.........................................................................................................................7
Pushrod –Damper –Roll bar link Length ....................................................................8
Set up Sheet........................................................................................................................9
The different positions of rear anti-squat...................................................................11
Front anti-roll bar.............................................................................................................12
Rear anti-roll bar..............................................................................................................13
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
Pedal position sensor:...................................................................................................25
Brake line protection:.....................................................................................................26
Conversion table..............................................................................................................28
Contacts ............................................................................................................................29
Appendix 1 : Electronic manual....................................................................................30

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Characteristics
TECHNICAL SPECIFICATION
Engine : FORD Ecoboost 1.6 liters turbo Weight : 485 Kg
All aluminium
Gearbox : Hewland FTR Chassis : Fabricated in high quality
6 sequential gears + reverse aircraft specification tubes
Tyres : Dunlop Suspensions :
Front : 7.5’’-21’’x13’’ Front : Mono and Twin shock
Rear : 8.5’’-22’’x13’’ Rear : Twin shock
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 seat
Head-restraint
FIA homologated collapsible steering column
Cooling : aluminium radiators + air duct Driveshaft : SADEV assembly
Intercooler + air duct

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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

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Setup adjustments
FRONT
REAR
Pushrod Adjuster
1 turn change
Height change
Camber
for 1 mm ride height
(th. = 3/8 + 1/2 UNF)
5.38 mm
0.17°
1/5 turn
(th. = 3/8 + 1/2 UNF)
6.72 mm
0.16°
1/7 turn
Spring Platform
1 turn
Height change
Camber
Mono
2.3 mm
0.07°
Twin
3 mm
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 face bearing
(th.= 1/2+7/16unf)
0.82° or 4.1 mm
0.14° or 0.94 mm
1.1 face adjuster

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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.

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Camber –Castor –Toe
Original twin damper settings
Front
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 MR²
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

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Pushrod –Damper –Roll bar link
Length without rod end
MONO Damper Front
TWIN Damper Front
Pushrod
Front
555.8 mm
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)

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Set up Sheet
Driver
Track
Chassis
Session
Engine
Set up
Standard Mono
Mileage/kilometers
Date
FRONT
REAR
System
Position
Position
SUSPENSION
mono
1
1
Height [mm]
Height [in]
Height [mm]
Height [in]
RIDE HEIGHT
42
1.65
47
1.85
Pushrod length [mm]
Static damper length
Pushrod length [mm]
Static damper length
624
325
647
325
[mm]
[degree]
[mm]
[degree]
TOE (each wheel)
1
1
Left [deg]
Right [deg]
Left [deg]
Right [deg)
CAMBER
3
3
3
3
*
Real on upright [deg]
Real on ackerman [deg]
CASTOR
5.6°
3.75°
Rate [lbs/in]
Pre-load [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 [psi]
Cold
1.3
1.3
1.3
1.3
Hot
1.6
1.6
1.6
1.6
Front flap
Lower rear wing
Upper rear wing
Theorical balance
WINGS ANGLE
19°
0°
15°
42,2
1st
2nd
3th
4th
5th
6th
GEAR RATIOS
12/38
15/32
15/25
18/25
24/25
18/19
Loaded front wheel diam. [mm]
Crown wheel & pinion
522.4
12/34
Front MC
Rear MC
Clutch MC
BRAKES
0.7
0.7
0.75
NOTES :

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Driver
Track
Chassis
Session
Engine
Set up
Standard Twin
Mileage/kilometers
Date
FRONT
REAR
System
Position
Position
SUSPENSIONS
Twin
2
2
Height [mm]
Height [in]
Height [mm]
Height [in]
RIDE HEIGHT
42
1.65
47
1.85
Pushrod length [mm]
Static damper length
Pushrod length [mm]
Static damper length
622
325
647
325
[mm]
[degree]
[mm]
[degree]
TOE (each wheel)
1
1
Left [deg]
Right [deg]
Left [deg]
Right [deg]
CAMBER
3
3
3
3
*
Real on upright [deg]
Real on ackerman [deg]
CASTOR
5.6°
3.75°
Rate [lbs/in]
Pre-load [mm]
Rate [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
1.3
1.3
1.3
1.3
Hot
1.6
1.6
1.6
1.6
Front flap
Lower rear wing
Upper rear wing
Theorical balance
WINGS ANGLE
19°
0°
15°
42,2
1st
2nd
3th
4th
5th
6th
GEAR RATIOS
12/38
15/32
15/25
18/25
24/25
18/19
Loaded front wheel diam. [mm]
Crown wheel & pinion
522.4
12/34
Front MC
Rear MC
Clutch MC
BRAKES
0.7
0.7
0.75
NOTES :

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The different positions of rear
anti-squat
It’s possible to adjust the rear anti-squat by changing the position of both lower & upper
wishbone bracket:
Position 1is the standard position for front mono suspension; it gave maximum
antisquat with the same roll centre.
Position 2is 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

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Front anti-roll bar
Here the Wheel rate Graph from the different Front roll bar diameter.
The position is indicated by the distance from the linkage bracket to the roll bar end.
0 is the full soft position; 30 mm is the full stiff position.
Front Bar Twin
232.0
270.4
331.1
410.5
517.7
665.0
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
9134.9
4990.1
10696.2
4000.0
6000.0
8000.0
10000.0
12000.0
0 1 2 3 4 5 6
Blade position (mm)
Wheel rate (N/mm)
D23
D25

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Rear anti-roll bar
Here the Wheel rate Graph from the different rear roll bar diameter.
The position is indicated by the distance from the linkage bracket to the roll 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

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Dampers
The car can be fitted with any 325 mm long dampers.
Most common options are Quantum or Koni 2 ways dampers.

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Adjusting the QUANTUM Type 4
damper
The QUANTUM type 4 is a monotube double adjustable damper, with independent compression and
rebound control.
The adjusters are located in the window situated in the top eye of the damper. The adjusters move in
“sweeps”, one sweep is the defined by the width of the window.
Resetting the damper to full hard.
1. With the damper vertical (damper rod facing up) the top most adjuster is for compression, the lower
adjuster is for rebound.
2. Turning the adjusters clockwise (to the left) makes the damper harder, to the right (anticlockwise)
softens the damper.
3. The two adjusters are sealed by “O” rings and the drag of the seals will often cause both adjusters
to move even if only one is turned. This 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 to full hard.
6. The damper is now set fully hard .
This is the point that should be used as the base line before setting up the damper. The damper has a
maximum range of -24 sweeps from full hard to full soft on both compression and rebound.
If in the course of testing only one adjuster needs to be moved, there are two methods. 1. Lock out the
adjuster that does not need to be moved with a spare pin or move the adjuster in question then reset
the other to the required position if it is dragged by the “O” rings.
Full stiff is position 0, then 1,2,3…24

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Springs
Standard Springs on the car are Eibach springs.
Part number
Stiffness
[lbs/inch]
Stiffness
[N/mm]
Height
[mm]
Diam. Int.
[mm]
SJ01.14.095.A
400
70
136
36
SJ01.14.096.A
500
88
136
36
SJ01.14.097.A
600
106
134
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 pump)
Rear Brake = 0.70 (right/hand pump)

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Aero set up
Front wing:
Position Convention: Angle of the flat part of the flap- flap extension (red line):

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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

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Rear wing:
Position Convention: Angle of line on top of the wing elements (red line):

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Upper wing:
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