BMW Motorrad ESA system
ESA function, standard system.
Enduro ESA
The R 1200 GS and GS Adventure model, was face lifted
and technically improved in 2008.
The Enduro ESA was launched, as a factory option.
To switch between the spring preload settings below,
engine must idle and speed = 0 km/h
Change by push ESA button long time,
Comfort, Normal, Sport (damping levels) can be changed
while riding, by a short push on the button!
solo rider
soft terrain
rider with luggage
Pillion rider
rough terrain
comf
Comfort soft damping
norm
Normal medium damping
sport
Sport, hard damping
Öhlins Racing BM 670
ESA replacement system.
Öhlins Racing BM 670
ESA replacement system kit content.
Öhlins suspension ECU
• Microcontroller - 32 bit @ 72 MHz
• 4 x Stepper motor drivers (with support for 5)
• 1 x DC motor driver with current sensing
• 1 x CAN connection (Controller Area Network)
• 1 x analogue input, 12 bit ADC (Analog to Digital Converter)
• 1 x digital input
• Reverse battery protection
• Battery transient protection
• Environmentally sealed electronics IP67
• Power supply management against sudden power problems
• ECU software update-able via CCP (CAN Calibration Protocol)
Öhlins Racing BM 670
ESA replacement system. EC-Adjustment instruction:
There are 3 different driving modes available for normal roads and different load conditions:
Öhlins Racing BM 670 P
ESA replacement system. Pre set EC-Adjuster positions:
Öhlins Racing BM 670
ESA replacement system. EC-Adjustment instruction:
There are 2 different driving modes available for bad roads and terrain:
Öhlins Racing BM 670 P
ESA replacement system. Pre set EC-Adjuster positions:
Öhlins Racing BM 670
ESA replacement system compared to enduro-ESA
•
The Öhlins TTX-EC system has 4 damping adjusters.
The standard enduro-ESA has 2, one front and one rear.
–
•
•
•
This improves how precise you can control the level of compression and rebound damping
for each riding mode.
2 new valves, damping pistons, has been developed for this project.
We have implemented an intelligent ”Smart EC” function in the street
comfort damping mode that adapts the damping level to the vehichle speed.
We have chosen to exclude the EC front pre-load adjuster, that is mainly
used to get more ground clearance for rough terrain riding, due to following
reasons:
– The manual pre-load adjuster on the front T36 is easy to access and adjust.
– It saves cost plus weight and our main focus is the hydraulic properties and the
electronic control system.
Öhlins Racing BM 670
Smart EC function in Comfort mode
When riding in COMFORT mode, the damping level changes automatically to
NORMAL mode, when speed is higher than 80 km/h.
When speed is higher than 120 km/h, the damping level automatically changes
to SPORT mode, but without spring pre-load.
When speed is decreasing, the modes switches back again.
Note: By adjusting to SPORT setting with the ESA button, there are also a
spring preload added. This is a unic Öhlins Racing feature not existing in
the ESA system.
BMW Motorrad ESA system
Unique features
Spring pre-load
changes with
damping levels
Patented TTX
technology
(<80, 80-120, >120 km/h)
Significantly
improved tyre
feeling
4 damping adjusters, instead of
2 on original BMW Enduro ESA
Full maintenance
possibility
Future possibility to fit
springs with different rate
Individual spare
parts available
Price level compared
to original BMW
spare parts is good
Familiar Öhlins
Racing high end
quality and look
Spring pre-load adjustment uses very
low power consumption, < 2.6 Ampere,
(BMW Enduro ESA:
Smart EC function,
speed dependent!
Future upgrade
possibilities
The system is
manouvered by
BMW ESA button via
CAN bus and uses
the std BMW
dashboard symbols