Tatuus T318 User manual
T318 TECHNICAL MANUAL
Release 3.00 (22/06/2020)
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1 General Information.................................................................................................................................. 7
1.1 Releases............................................................................................................................................. 7
1.1.1 Release list................................................................................................................................. 7
1.2 Technical Contacts............................................................................................................................. 8
1.2.1 Chassis ....................................................................................................................................... 8
1.2.2 Engine ........................................................................................................................................ 8
1.2.3 Gearbox ..................................................................................................................................... 9
1.2.4 Electronic................................................................................................................................... 9
1.2.5 Tires ........................................................................................................................................... 9
1.2.6 Brakes ...................................................................................................................................... 10
1.2.7 Dampers................................................................................................................................... 10
1.2.8 Seat belts –Fire Extinguisher .................................................................................................. 10
1.3 General Agreement and Warranty.................................................................................................. 11
1.4 Overview.......................................................................................................................................... 12
1.5 General information........................................................................................................................ 13
1.6 Mileage chart................................................................................................................................... 15
2 Safety....................................................................................................................................................... 18
2.1 Survival Cell...................................................................................................................................... 18
2.2 Extractable Seat............................................................................................................................... 19
2.3 Driver Padding ................................................................................................................................. 20
2.4 Seat Belts......................................................................................................................................... 20
2.5 Front Impact Structure.................................................................................................................... 21
2.5.1 Retention system adjustment ................................................................................................. 21
2.5.2 Front nose repair specification and procedure....................................................................... 22
2.5.2.1 Applicable requirements ..................................................................................................... 22
2.5.2.2 Replacement procedure...................................................................................................... 22
2.6 Rear Impact Structure ..................................................................................................................... 24
2.7 Side Impact Structure...................................................................................................................... 24
2.8 Halo.................................................................................................................................................. 25
2.8.1 Installation procedure ............................................................................................................. 25
2.8.2 Disassembly procedure ........................................................................................................... 34
2.9 Steering Column .............................................................................................................................. 37
2.10 Wheel Tethers ................................................................................................................................. 37
2.11 Rear Crashbox Tethers..................................................................................................................... 37
2.12 Fire Extinguisher.............................................................................................................................. 38
2.13 Fuel Cell ........................................................................................................................................... 40
2.14 Rain Light ......................................................................................................................................... 40
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2.14.1 Rain Light modes ..................................................................................................................... 40
2.15 Clutch Disengagement..................................................................................................................... 41
2.16 FIA Throttle Fail Safe........................................................................................................................ 41
3 Chassis ..................................................................................................................................................... 42
3.1 Workshop Tools............................................................................................................................... 42
3.1.1 Front Jacking............................................................................................................................ 42
3.1.2 Rear Jacking............................................................................................................................. 43
3.2 Setup Tools ...................................................................................................................................... 44
3.2.1 Front references ...................................................................................................................... 44
3.2.2 Rear references ....................................................................................................................... 45
3.2.3 Wheel hub ............................................................................................................................... 46
3.3 Standard Set-up............................................................................................................................... 47
3.3.1 Road Course Set-Up................................................................................................................. 47
3.4 Weight and ballast........................................................................................................................... 48
3.5 Controls and Display........................................................................................................................ 52
3.5.1 Cockpit Controls ...................................................................................................................... 52
3.5.2 Steering Wheel Controls.......................................................................................................... 53
3.5.3 Steering Wheel Display............................................................................................................ 54
3.5.3.1 Page #1: Driver page............................................................................................................ 55
3.5.3.2 Page #2: Setting page .......................................................................................................... 56
3.5.3.3 Page #3: Logger page........................................................................................................... 58
3.5.3.4 Page #4: Electric Power Distribution ................................................................................... 59
3.5.3.5 Page #5: Engine warmup..................................................................................................... 60
3.5.3.6 Page #6: Gearbox page........................................................................................................ 61
3.6 Driver installation ............................................................................................................................ 62
3.6.1 Steering Wheel Position .......................................................................................................... 62
3.6.2 Pedals....................................................................................................................................... 63
3.6.2.1 Brake pedal.......................................................................................................................... 64
3.6.2.2 Throttle pedal...................................................................................................................... 65
3.6.2.3 Clutch pedal......................................................................................................................... 66
3.6.2.4 Heel rest............................................................................................................................... 67
3.6.3 Brake Bias ................................................................................................................................ 68
4 Aerodynamic............................................................................................................................................ 69
4.1 General Notes.................................................................................................................................. 69
4.2 Front Wing Setting........................................................................................................................... 70
4.3 Rear Wing Setting............................................................................................................................ 71
4.4 Aerodynamic Reference Setup........................................................................................................ 72
4.5 Ride Height Sensitivity..................................................................................................................... 73
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4.6 Wing Sensitivity ............................................................................................................................... 76
4.6.1 Wing Sensitivity, both the front flaps on, without gurney flap installed ................................ 77
4.6.2 Wing Sensitivity, both the front flaps on, with gurney flap (190mmx15mm) installed.......... 79
4.6.3 Wing Sensitivity, only lower front flaps on, without gurney flap installed ............................. 81
4.6.4 Wing Sensitivity, only lower front flaps on, with gurney flap (250mmx15mm) installed....... 83
4.7 Diffuser ............................................................................................................................................ 85
5 Suspensions ............................................................................................................................................. 86
5.1 Measurement standard................................................................................................................... 86
5.2 Geometry Adjustments ................................................................................................................... 87
5.2.1 Ride height adjustment ........................................................................................................... 87
5.2.2 Camber adjustment................................................................................................................. 88
5.2.3 Toe adjustment........................................................................................................................ 88
5.2.4 Caster adjustment ................................................................................................................... 89
5.2.5 UMP adjustment...................................................................................................................... 90
5.3 Vertical stiffness .............................................................................................................................. 91
5.3.1 Front vertical stiffness ............................................................................................................. 91
5.3.2 Rear vertical stiffness .............................................................................................................. 91
5.4 Dampers .......................................................................................................................................... 92
5.5 Rolling stiffness................................................................................................................................ 94
5.5.1 Front roll stiffness.................................................................................................................... 94
5.5.2 Rear roll stiffness..................................................................................................................... 94
5.6 Suspension Geometry...................................................................................................................... 95
5.6.1 Front suspension geometry..................................................................................................... 95
5.6.2 Rear suspension geometry...................................................................................................... 96
5.6.2.1 Anti-effects .......................................................................................................................... 98
5.6.2.1.1 Front .............................................................................................................................. 98
5.6.2.1.2 Rear................................................................................................................................ 99
5.7 Suspension maintenance............................................................................................................... 100
5.7.1 Upright Maintenance............................................................................................................. 100
5.7.2 Upright Disassembly.............................................................................................................. 101
5.7.3 Upright Assembly................................................................................................................... 105
6 Steering.................................................................................................................................................. 107
6.1 Steering Geometry ........................................................................................................................ 107
6.1.1 Standard ratio: 8 teeth pinion ............................................................................................... 107
6.1.2 Option ratio: 7 teeth pinion................................................................................................... 107
6.2 Steering maintenance.................................................................................................................... 108
7 Wheels and Tires ................................................................................................................................... 109
7.1 Wheels........................................................................................................................................... 109
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7.2 Tires ............................................................................................................................................... 110
7.2.1 Giti Tires................................................................................................................................. 110
7.2.2 Pirelli...................................................................................................................................... 111
7.2.2.1 Static measurements......................................................................................................... 111
7.2.2.2 Dynamic measurements.................................................................................................... 112
7.2.2.3 Operating instructions....................................................................................................... 112
7.2.2.4 Technical Limitations –F3 Regional................................................................................... 113
7.2.2.5 Static measurements......................................................................................................... 113
7.2.2.6 Dynamic measurements 230/570-13x10.0J SLICK @ 1.4bar (20.5psi), CA 0.0°................ 114
7.2.2.7 Static Radial Deflection 230/570-13x10.0J @ CA 0.0° SLICK............................................. 115
7.2.2.8 Static Radial Deflection 230/570-13x10.0J @ CA 3.0° SLICK............................................. 117
7.2.2.9 Dynamic measurements 300/590-13x12.0J SLICK @ 1.4bar (20.5psi), CA 0.0°................ 119
7.2.2.10 Static Radial Deflection 300/590-13x12.0J @ CA 0.0° SLICK......................................... 120
7.2.2.11 Static Radial Deflection 300/590-13x12.0J @ CA 3.0° SLICK......................................... 122
7.2.3 Hankook................................................................................................................................. 124
7.2.3.1 Tyre Characteristics (Static measurement) ....................................................................... 126
7.2.3.1.1 Dimension.................................................................................................................... 126
7.2.3.1.2 Static Radial Deflection (Kv) ........................................................................................ 127
7.2.3.2 Tyre Characteristics (Dynamic Measurement).................................................................. 131
7.2.3.2.1 Dynamic measurements 230/560R13 F200(10J) Slick @ 1.5Bar, CA 0.0°................... 131
7.2.3.2.2 Dynamic measurements 280/580R13 F200(12J) Slick @ 1.5Bar, CA 0.0°................... 132
7.2.3.2.3 Dynamic measurements 230/560R13 Z217(10J) Rain @ 1.5Bar, CA 0.0°................... 133
7.2.3.2.4 Dynamic measurements 230/560R13 Z217(10J) Rain @ 1.5Bar, CA 0.0°................... 134
7.2.3.2.5 Dynamic measurements 280/580R13 Z217(12J) Rain @ 1.5Bar, CA 0.0°................... 135
7.2.3.3 Operating Temperature..................................................................................................... 136
7.2.3.4 Tyre Care Information (Technical Limitations).................................................................. 137
8 Brake system ......................................................................................................................................... 140
8.1 Technical notes.............................................................................................................................. 140
8.1.1 Balance bar............................................................................................................................ 140
8.2 Brake system Setup ....................................................................................................................... 140
8.3 Brake system Bedding-in............................................................................................................... 141
9 Cooling System ...................................................................................................................................... 142
10 Fuel system........................................................................................................................................ 142
10.1 Fuel Tank........................................................................................................................................ 142
10.2 Fuel drain procedure ..................................................................................................................... 142
10.3 Fuel coupling.................................................................................................................................. 142
10.4 Fuel machine options .................................................................................................................... 143
11 Oil System.......................................................................................................................................... 144
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11.1 Alfa Romeo Oil tank....................................................................................................................... 144
11.2 Renault Oil tank ............................................................................................................................. 145
11.3 Toyota Oil tank .............................................................................................................................. 146
12 Electric system................................................................................................................................... 147
12.1 Overview........................................................................................................................................ 147
12.2 Main switch ................................................................................................................................... 148
12.3 Battery and Alternator .................................................................................................................. 149
12.3.1 Battery installation ................................................................................................................ 149
12.3.2 Jump battery.......................................................................................................................... 149
12.4 Powerbox....................................................................................................................................... 150
12.4.1 Alfa Romeo configuration...................................................................................................... 150
12.4.2 Renault configuration............................................................................................................ 151
12.4.3 Toyota configuration ............................................................................................................. 151
12.5 Wiring loom................................................................................................................................... 152
12.5.1 Radio plug.............................................................................................................................. 152
12.6 Sensors........................................................................................................................................... 153
12.7 Vref list........................................................................................................................................... 154
12.7.1 Alfa Romeo configuration VREF list ........................................................................................ 154
12.7.2 Renault configuration VREF list .............................................................................................. 154
13 Engine ................................................................................................................................................ 155
14 Transmission...................................................................................................................................... 156
14.1 Ratio Chart..................................................................................................................................... 156
14.1.1 Gear option 01....................................................................................................................... 157
14.1.2 Gear Option ........................................................................................................................... 158
14.2 Differential..................................................................................................................................... 159
14.3 Lubrication..................................................................................................................................... 160
14.4 Particular precautions ................................................................................................................... 160
14.5 Storage and use............................................................................................................................. 160
14.5.1 Washing under pressure........................................................................................................ 160
14.6 Glue components .......................................................................................................................... 161
14.7 Special tools................................................................................................................................... 161
14.8 Gear maintenance ......................................................................................................................... 162
14.8.1 Removal................................................................................................................................. 162
14.8.2 Refitting ................................................................................................................................. 164
14.8.3 Selector fork adjustment....................................................................................................... 165
14.9 Differential..................................................................................................................................... 167
14.9.1 Removal................................................................................................................................. 167
14.9.2 Dismantling the differential elements................................................................................... 167
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14.9.3 Refitting the differential elements........................................................................................ 167
14.10 Crown-wheel replacement........................................................................................................ 168
14.10.1 Secondary shaft ................................................................................................................. 168
14.10.2 Crown................................................................................................................................. 174
14.11 Exploded views.......................................................................................................................... 178
14.11.1 Layshaft.............................................................................................................................. 178
14.11.2 Mainshaft........................................................................................................................... 179
14.11.3 Barrel and forks ................................................................................................................. 180
14.11.4 Differential......................................................................................................................... 181
14.11.5 Main case........................................................................................................................... 182
14.11.6 Selection and reverse ........................................................................................................ 183
14.11.7 Oil pump ............................................................................................................................ 184
14.12 Rebuilding of the gearbox ......................................................................................................... 185
14.12.1 Sadev workshop rebuilding. .............................................................................................. 185
14.12.2 Private revision.................................................................................................................. 185
15 Shift system ....................................................................................................................................... 186
15.1 System Overview........................................................................................................................... 186
15.1.1 Gearshift control.................................................................................................................... 186
15.1.2 ESA resting position............................................................................................................... 187
15.1.3 ESA maintenance................................................................................................................... 188
16 Electronic & Software........................................................................................................................ 189
16.1 Electronic....................................................................................................................................... 189
17 Annexes ............................................................................................................................................. 190
17.1 Tightening torque.......................................................................................................................... 190
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1GENERAL INFORMATION
1.1 RELEASES
Modifications from previous release are in purple.
1.1.1 Release list
Version
Release Date
Author
Notes
0.02
20/06/2018
Tatuus
Startup version
1.00
03/07/2018
Tatuus
First release
1.01
04/07/2018
Tatuus
Minor updates
1.10
10/10/2018
Tatuus
Gearbox maintenance
1.20
12/12/2018
Tatuus
Halo installation, Aeromaps, Kinematic data, Gearbox torques
2.00
21/01/2019
Tatuus
Engine options added
2.01
24/01/2019
Tatuus
Pickup updates
2.10
10/02/2019
Tatuus
Front/Rear suspensions update (UMP/anti-effects)
2.20
01/03/2019
Tatuus
Differential info
Radio plug
Pirelli Data Booklet
2.30
05/04/2019
Tatuus
Brake system info
Fuel machine option
Sensors
3.00
22/06/2020
Tatuus
Mileage Chart update
Aerodynamic chapter update
Hankook Data Booklet
ESA chapter update
FIA Throttle Fail Safe
Brake Bedding-in procedure
VREF list
Minor updates
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1.2 TECHNICAL CONTACTS
1.2.1 Chassis
Tatuus Racing SpA
Via G. Verga, 12
20863 Concorezzo (MB) - Italy
Tel: +39 039 6040828
Fax: +39 039 6041764
Web: www.tatuus.it
1.2.2 Engine
AUTOTECNICA
Via A. Bernardi, 3
26041 Casalmaggiore (CR) - Italy
Contact: Giovanni Delfino
Tel. +39 0375 40174
Fax. +39 0375 40174
ORECA
Technopole du Circuit
58470 Magny-Cours
France
+33 (0) 3 86 21 08 00
+ 33 (0) 3 86 21 08 02
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1.2.3 Gearbox
SADEV
6 rue Grand’Montains
85110 Saint Prouant
Tel: +33 2 51 66 42 68
Fax: +332 51 66 49 60
@ : sadev@sadev-tm.com
Web: www.sadev-tm.com
1.2.4 Electronic
1.2.5 Tires
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1.2.6 Brakes
1.2.7 Dampers
1.2.8 Seat belts –Fire Extinguisher
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1.3 GENERAL AGREEMENT AND WARRANTY
Tatuus is proud of the quality, success and reputation of their products and is delighted that you have chosen
to use the T318 chassis.
The design of each chassis is the subject of much research and development, technical analysis and detailed
testing. However, as with all motorsport products, it is vital that they are correctly maintained and adjusted
for each individual circumstance. This manual is intended to ensure that you obtain the maximum perfor-
mance and reliability from this chassis.
We would stress that after each event or prolonged period of running (suggested to be 5’000km) the chassis
should be carefully inspected and stripped as appropriate.
This manual contains mileage recommendations for critical components detailed in section 1.6. If in doubt
please contact our Commercial Department who will advise you or, if necessary, put you in contact with one
of our engineers.
It is important to ensure that all adjustments and tolerances are as specified. The use of parts not supplied
by Tatuus will automatically invalidate any warranty or other liability which would normally be assumed by
Tatuus.
Your attention is drawn in particular to the following statement:
‘Goods intended for motorsport or any related application, or for product development, evaluation or exper-
imentation are supplied subject to the Customer recognizing that such goods may operate under extreme
loads and conditions and that it is the Customer’s responsibility to ensure that the goods are correctly in-
spected, adjusted and maintained at all times to suit the specific conditions in which they may be used.’
‘Lightweight and weight optimized components are supplied subject to warranty only against manufacturing
defects. It is possible that in certain conditions operating life may be reduced. Similarly, prototype, experi-
mental or components manufactured to the Customer’s design are supplied subject to warranty only against
manufacturing defects.
Furthermore, such components, by their very nature, are not warranted as to their suitability for use or per-
formance.’
‘Tatuus shall have no liability to the Customer (other than liability for death or personal injury resulting from
Tatuus’ negligence) for any loss or damage of any nature arising from any breach of any expressed or implied
warranty, term or condition of the contract or from any negligence or breach of statutory or other duty on
the part of Tatuus in connection with the performance or purported performance of or failure to perform
the contract other than as set out in this Condition. In no circumstances shall Tatuus be liable for any claims
for indirect or consequential injury or damage (including loss of profits) arising from any such matters.’
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1.4 OVERVIEW
FRONT TRACK
1575 mm
REAR TRACK
1530 mm
WHEELBASE
2900 mm
OVERALL LENGTH
4855 Max mm
OVERALL WIDTH
1850 Max mm
OVERALL HEIGHT
950 mm (from reference plane)
CHASSIS
Composite Carbon fiber sandwich with Al/Nomex honeycomb,
FIA F3/2019 (Ann.J Art.273) homologated
BODYWORK
Carbon fiber
FRONT SUSPENSION
Push-rod / twin damper / spring
REAR SUSPENSION
Push-rod / twin damper / spring
SPRINGS
Eibach 36mm
DAMPERS
Koni
BRAKES
Brembo
TIRES
Giti
Hankook
Pirelli
WHEELS
OZ Racing
ENGINE
Autotecnica Motori
Renault Sport Oreca
Toyota
EXHAUST
Aros
ELECTRONICS
Magneti Marelli / Next Solution / Motec
GEARBOX
SADEV SLR82
GEARSHIFT
Magneti Marelli ESA
STEERING WHEEL
Tatuus / Next Solution
BATTERY
DEKA
FUEL CELL
PREMIER FT5
SEAT BELTS
Sabelt
FIRE EXTINGUISHER
OMP
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1.5 GENERAL INFORMATION
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1.6 MILEAGE CHART
The following chart should be used to ensure that component life is not exceeded and premature failures are
prevented by regular inspection. Check and replace in accordance with the recommended distances below.
Mark all parts for mileage tracing purposes and note in build records.
All parts not included in the list require inspection after 20,000km. Visual inspection should identify any parts
with cracks, scratches, significant wear or corrosion.
NOTES: The table below is provided for guidance on the expected life of key components based on Tatuus’
experience of this product in similar applications, however no warranty is implied by figures stated above
and mileage targets are no substitute for testing and regular inspection of the chassis. Check all components
after any accident or abnormal usage. In doubt, replace the components.
For safety reasons, please contact immediately Tatuus if you discover premature wear or problems.
Many of the components stated above with a maximum 'typical' life of 20’000km may be found to perform
successfully for extended mileage however extended running above 20’000km is done at customer's risk.
Inspection [km]
Limit [km]
Chassis
Survival cell
10’000
20’000
Front crashbox
10’000
20’000
Rear crashbox
10’000
20’000
Wheel tethers
12 months
Rear Crashbox tether
12 months
Nosebox studs
2’500
5’000
Engine studs
5’000
10’000
Floor stays
2’500
5’000
Brake pedal
2’500
5’000
Throttle pedal
5’000
10’000
Front suspension
Upright
5’000
10’000
Wheel bearing
5’000
10’000
Hubs
10’000
20’000
Hub bolts
2’500
5’000
Wheel spindle
5’000
10’000
Drive pegs
2’500
5’000
Wishbones
5’000
10’000
Push-rods
5’000
10’000
Suspension bracket
5’000
10’000
Front ackermann
2’500
5’000
Front anti-roll bar
2’500
5’000
Rocker assy
5’000
10’000
Steering
Steering/toe arms
5’000
10’000
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Inspection [km]
Limit [km]
Steering column
5’000
10’000
Steering rack
5’000
10’000
Rack/pinion
5’000
10’000
Ball joint
1’250
5’000
Rear suspension
Upright
5’000
10’000
Wheel bearing
5’000
10’000
Outer hub
10’000
20’000
Inner hub
5’000
10’000
Hub bolts
2’500
5’000
Wheel spindle
5’000
10’000
Drive pegs
2’500
5’000
Wishbones
5’000
10’000
Push-rods
5’000
10’000
Suspension bracket
10’000
20’000
Bottom forward bracket
5’000
10’000
Rear upright bracket
5’000
10’000
Rear anti-roll bar
2’500
5’000
Rocker assembly
5’000
10’000
Front Wing
Front wing
5’000
15’000
Front pillars
5’000
15’000
Rear wing
Front wing
5’000
15’000
Front pillars
5’000
10’000
Front endplates
5’000
15’000
Transmission
Wheel shaft
5’000
10’000
Slave cylinder (sealings)
5’000
10’000
Release bearing
5’000
10’000
Gearbox
Gearbox internals
see SADEV
ESA
5’000
10’000
ESA rubber mounting
1’000
3’000
Brake system
Brake pedal
2’500
5’000
Brake balance bar
2’500
5’000
Master cylinders
5’000
10’000
Calipers
5’000
20’000
Disc bells
5’000
10’000
Brake discs
1’000
2’000
Oil lines
5’000
10’000
Cooling system
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Inspection [km]
Limit [km]
Radiators
5’000
10’000
Water tank cap
2’500
5’000
Pipelines
10’000
20’000
Exhaust
Tail pipe
3’000
6’000
Catalytic
2’500
5’000
Electrical system
Battery
5’000
10’000
Switch panel
5’000
10’000
Master switch
5’000
10’000
Marshall switches
5’000
10’000
Chassis loom
10’000
20’000
Gearbox loom
10’000
20’000
Powerbox
10’000
20’000
Steering wheel
5’000
10’000
GCU
10’000
20’000
Extinguisher system
Extinguisher bottle
see expire date
Extinguisher mountings
5’000
10’000
Extinguisher pipelines
10’000
20’000
Extinguisher CU
5’000
10’000
Engine lubrication system
Oil lines
10’000
20’000
Tank filter cartridge
5’000
10’000
Fuel system
Fuel tank
see expire date
Fuel pump
5’000
10’000
Fuel filter
2’500
5’000
Fuel hoses
10’000
20’000
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2SAFETY
This chapter enlist the Homologated Safety Devices, these parts cannot be modified or repaired without the
approval of Tatuus.
2.1 SURVIVAL CELL
The survival cell is the main safety and structural component of the car and it has been approved by the FIA,
great attention must be paid in checking for structural failure not later than two years after delivery from
Tatuus factory, and after each major accident. Chassis must be checked and repaired by a center authorized
by Tatuus.
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2.2 EXTRACTABLE SEAT
The seat must be removable without the need to cut any of the seat belts or remove the harness buckle.
The shoulder and lap belts must fall away over the seat edges as it is withdrawn and the crotch straps must
pass freely through the seat bottom hole or holes, which must be located in front of the driver's crotch.
Any seat liner must have the same holes as the seat shell, identical and perfectly aligned with them in order
to prevent the harness straps being trapped.
However, if the lap straps have to pass through holes in the seat, it is necessary to fit the car with a harness
having the buckle attached to a shoulder belt, given that the buckle will not pass between the driver's body
and the side of the seat.
Any seat made from foam must be covered with a non-flammable and non-combustible material.
Table of contents
