ASCHER RACING SIMUCUBE F64 Series User manual

F64-SC V3
steering wheel for racing simulators
product manual
V1.0

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Table of contents
1. Safety Information ........................................................................................................................... 3
1.1. Intended Use ........................................................................................................................... 3
1.2. Battery Warnings ..................................................................................................................... 3
2. Declaration of Conformity ............................................................................................................... 3
3. Box Contents ................................................................................................................................... 4
4. Product Overview ............................................................................................................................ 5
5. Quick Release Mounting Options .................................................................................................... 6
5.1. SC2 SQR WHEEL SIDE – Simucube Adapter ............................................................................. 6
5.2. SC2 SQR WHEEL SIDE – Ascher Racing SQR Adapter ............................................................... 6
5.3. 70mm bolt pattern Quick Release – outside mounting .......................................................... 6
5.4. 70mm bolt pattern Quick Release – inside mounting ............................................................. 7
6. Getting Started ................................................................................................................................ 8
6.1. First Wireless Connection – Pairing ......................................................................................... 8
6.2. Normal Operation ................................................................................................................. 10
6.3. Configure Analog Inputs ........................................................................................................ 10
6.4. Adjust Clutch Bite-Point ........................................................................................................ 13
6.5. Mode-Switches ...................................................................................................................... 13
6.6. Simucube Button ................................................................................................................... 13
7. Battery ........................................................................................................................................... 14
7.1. Charging ................................................................................................................................. 14
7.2. Battery Life ............................................................................................................................ 14
8. Paddle Shifter Force Adjustment .................................................................................................. 15
9. Steering Wheel Dimensions .......................................................................................................... 16

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1. Safety Information
Thank you for purchasing the Ascher Racing F64-SC V3 steering wheel. Please read the manual carefully
before installing and using the product.
1.1. Intended Use
The steering wheel is designed to be used in a competitive sim racing environment for indoor use only
and connects wirelessly to a Simucube.
Please note the following general safety aspects:
 The device must not be exposed to rain or humidity to avoid the risk of fire and electric shock.
 Do not operate or store the device outside of room temperature, 15°C to 35°C
 We strongly advise you not to drive a vehicle immediately after driving a racing simulation.
 This product is not intended for children under the age of 15 years.
 Contains small pieces – danger of swallowing!
 Extended periods of driving a simulation may cause health risks. Take a break of 5 minutes
every 20 minutes and do not exceed 2 hours of total driving time per day.
 Keep hair, clothing and jewelry away from the product when in use.
 Only one person may use the product at any given time. Keep other persons away from the
product when in use.
 Do not disassemble the product beyond what is described in this product manual.
 Do not apply excessive force, bend or pull on the wireless antenna.
 Make sure the steering wheel is mounted securely to your wheel base and screws are
tightened properly before use.
 Do not leave the device exposed to a heat source or in a high-temperature location, such as in
the sun in an unattended vehicle. To prevent the possibility of damage, remove the device
from the vehicle or store it out of direct sunlight.
1.2. Battery Warnings
A rechargeable lithium polymer battery is used in this device. If these guidelines are not followed,
batteries may experience a shortened life span or may present a risk of damage to the device, fire,
chemical burn, electrolyte leak, and/ or injury.
 Do not modify, remanufacture, puncture or damage the device or battery.
 Do not remove or attempt to remove the battery.
 Do not expose the device to fire, explosion or another hazard.
2. Declaration of Conformity
It’s in conformity with the essential requirements and other relevant requirements of the Radio
Equipment Directive (RED) (2014/53/EU).
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
 This device may not cause harmful interference, and
 this device must accept any interference received, including interference that may cause
undesirable operation.
Any changes or modifications not expressly approved by KW automotive GmbH could void the user’s
authority to operate the equipment.

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3. Box Contents
The box contains the following components and accessories:
 F64-SC V3 steering wheel
 USB-C to USB-A charging cable
 standard screws and washers for Quick Release mounting
 sticker sheets for encoders and buttons
 alternative magnets and spacers

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4. Product Overview

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5. Quick Release Mounting Options
The steering wheel offers a standard M5 threaded, 70mm bolt pattern in order to mount a Quick
Release or steering column. There are several possible mounting options for all common QRs shown
below. Adapters or QRs are not part of the scope of supply and have to be purchased separately.
5.1. SC2 SQR WHEEL SIDE – Simucube Adapter
5.2. SC2 SQR WHEEL SIDE – Ascher Racing SQR Adapter
5.3. 70mm bolt pattern Quick Release – outside mounting
Standard 70mm bolt pattern Quick Releases with non-threaded through holes (e.g. Q1R 70mm wheel
side) can be mounted as follows. QRs with threaded through holes can be mounted similarly by using
captive screws (section with a reduced shaft diameter) instead.

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5.4. 70mm bolt pattern Quick Release – inside mounting
QRs with either M5 threaded blind holes or other features preventing from conventional mounting
can be attached from the inside of the wheel casing. Captive screws are required to bypass the thread
of the casing.
First open the steering wheel by removing all (7) M4 screws on the frontplate. Unplug paddle shifters
and clutches in order to separate the casing from the frontplate assembly. Screw-in (5) captive screws
into the casing from the inside completely past their thread engagement. Then mount the QR by
turning each captive screw for only half a turn in a circular pattern until both opposing surfaces are
touching. Plug-in cables, reassemble the steering wheel and make sure to not squeeze any cables.

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6. Getting Started
6.1. First Wireless Connection – Pairing
The steering wheel can only be paired (or connected manually) during the first 11s after being switched
on. During this time, the left green LED blinks quickly – a successful connection is visualized by 3 slow
green blinks.
1. open True Drive / Wireless Wheels Tab
2. (Automatic connection mode: Connect to previously connected wheel)
3. switch ON steering wheel
4. double click Ascher Racing F64 V3
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2
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6.2. Normal Operation
First switch ON the Simucube wheel base and then the wireless wheel. If step 2 (automatic connection
mode) is enabled the wheel will connect automatically.
A successful connection is indicated by:
 green connection LED blinks 3 times
 Simucube plays a beep sound (if audible notifications are enabled)
 steering wheel shows up in the True Drive overview tab
The wheel can also be connected by using the paddle shifters in case it’s already switched ON:
 pull both shifters to connect immediately
 pull both shifters for 5s to disconnect
Automatic disconnect: The wheel will disconnect automatically after 1h of inactivity to safe energy in
sleep mode. Activity is monitored by the following conditions:
 turning the wheel for more than 10°
 FFB effects in use
 pushing any button on the wireless wheel
6.3. Configure Analog Inputs
Both analog paddles can be either set-up as individual axis (e.g. throttle and brake) or as combined
axis, called dual clutch. This mode compares the output of both axis and uses the momentarily greater
value. Additionally, one clutch is defined as master (m) - the other one as slave (s) with scaled down
output.
 master: 100% physical movement = 100% output
 slave: 100% physical movement = bite-point setting, e.g. 50% output
If the bite-point is set to 100%, both clutches can be used equally.
Dual clutch functionality offers several advantages; the desired bite-point can be reached:
 immediately, within milli seconds (by letting go the master and keeping the slave clutch pulled)
 precisely, adjust the value up to 0.1% precision
 repeatedly, the exact same value every single time

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Deadzones need to be adjusted so that a resting paddle has 0% output whereas a fully pulled paddle
results in 100% output.
The position indicator shows the resulting output which is reported to the simulation. Raw value is the
absolute, unaltered value of the paddle.
Deadzone low defines the Raw value at which the output starts (0%). Set this value about 1% - 2%
higher than the Raw value of the resting paddle.
Deadzone high defines the Raw value at which the output ends (100%). Set this value about 1% - 2%
lower than the Raw value of the fully pulled paddle.
Realistic values are as follows:
The last step is to define the previously configured wheel axis as a Simucube 2 axis:
If the axis doesn’t show up correctly in this tab or the overview tab, make a full power cycle of both
the wheel base and wireless steering wheel.
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6.4. Adjust Clutch Bite-Point
The clutch bite-point (maximum output of the slave clutch) can be adjusted on the steering wheel:
1. push right joystick for 1s to enter bite-point mode
2. right LED lights up orange
3. adjust bite-point in 1% increments by turning the left joystick or 0.1% with the right one
4. push right joystick for 1s to exit bite-point mode
It’s recommended to perform this procedure while in the virtual race car from top-down by pulling the
slave clutch completely and then lowering the value until the vehicle starts moving. Race starts are
performed by pulling both (m) and (s) clutches completely and when the starting lights turn green
letting go just the (m) clutch. The overall clutch signal will jump immediately to the set-up bite point
value.
Once the ideal bite-point is found and practice starts are performing as expected, the bite-point value
is shown in the overview tab (analog inputs) when the slave clutch is pulled completely.
6.5. Mode-Switches
The rear side of the steering wheel features 4 mode switches which change the behavior of encoders
and rotary switches (located on the same side of the steering wheel) in order to maximize the
performance and functionality.
encoder mode-switch: changes the behavior of the top encoder push button
 push btn: standard mode (push button can be used as input in the simulation)
 shift: (push button can’t be used in the simulation)
o pressing the push button creates an additional encoder output
o adjust two controls with one physical encoder
o e.g. turn to adjust ABS – push & turn to adjust TC
rotary mode-switch: changes the behavior of the 12-position rotary switch
 12-pos: standard mode (each position is an individual output)
 shift: (rotary can’t be used in the simulation)
o each rotary position changes the output of the thumb encoder
o adjust 12 controls with one physical encoder
o e.g. pos. 1 = ABS / pos. 2 = TC / pos. 3 = MAP / pos. 4 = Volume …
o left rotary switch shifts left thumb encoder and vice versa
6.6. Simucube Button
The left joystick push button acts as a Simucube Button which allows changing of force feedback
parameters on-the-fly.
 enter SC Button Mode by pushing left joystick button for 1s
 select parameter by pushing joystick in a direction
o Up: Overall Strength
o Left: Damping
o Right: Simucube Force Reconstruction Filter
o TBD
 increase/ decrease parameter by rotating the joystick encoder
 holding the direction for more than 2s resets the parameter to previous value
 exit SC Button Mode by pushing left joystick button for 1s
Each point above will give a recognizable audible feedback (if enabled).

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7. Battery
The steering wheel is equipped with a rechargeable lithium polymer battery. The shipping battery
charge is approx. 50%, which is also the optimum storage charge.
7.1. Charging
 The wheel can be charged in both conditions, switched ON and OFF
 Plug-in the provided cable (USB-C to USB-A) to the charging port on the rear side
 Connect the cable with a PC USB port or a 5V USB power supply (phone charger)
 Battery will be charged with 5.0V and 450mA
 A full charge takes about 6 – 7h
The right LED on the frontplate lights up red during charging and goes off once fully charged.
7.2. Battery Life
The steering wheel electronics are highly optimized for low power consumption without adding any
input lag. The battery Voltage is shown in TrueDrive – Overview Tab once connected.
The battery is expected to last at least 800h in a typical use-case. Once the battery crosses 3.35V, a
low Voltage warning is triggered:
 the right LED on the frontplate blinks every 2 minutes (3 fast flashes)
 SC2 gives an audible warning (if enabled)
The remaining driving time at this point is approx. 33h. It’s recommended to not discharge the battery
below 3.0V in order to prevent degradation. Additionally, any seriously harmful deep discharge will
automatically be avoided by the battery protection circuit cut-off at approx. 2.7V.
It’s recommended to switch OFF the steering wheel for storage or longer periods without use.
The following graph shows the correlation between battery capacity and voltage level. It can be used
to estimate the remaining time of the non-linear discharge graph. The data was generated from actual
measurements of the battery cell in use.

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8. Paddle Shifter Force Adjustment
The paddle shifter snap action force can be reduced by using the supplied alternative magnets and
spacers. Use those alternative magnets to carefully pull out the installed ones – if unsuccessful pull the
paddle shifter in order to reduce the force between the installed magnets.
Make sure that no loose magnets are in close proximity in order to avoid magnets crashing into each
other unintentionally.
Depending on the installed combination, the shifter force will be approximately:
 800g = 5mm + 5mm (factory default)
 570g = 5mm + 5mm + 1 spacer
 480g = 3mm + 3mm
 440g = 5mm + 5mm + 2 spacers
 340g = 3mm + 3mm + 1 spacer
 260g = 3mm + 3mm + 2 spacers

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9. Steering Wheel Dimensions