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/hChange by push ESA button long time,

Comfort, Normal, Sport (damping levels) can be changed while riding, by a short push on the button!

BMW Motorrad ESA systemESA function, standard system.

solo rider

rider with luggage

Pillion rider

soft terrain

rough terrain

comf

norm

sport

Comfort soft damping

Normal medium damping

Sport, hard damping

Öhlins Racing BM 670 ESA replacement system.

Öhlins Racing BM 670 ESA replacement system kit content.

• 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 suspension ECU

Öhlins Racing BM 670ESA replacement system. EC-Adjustment instruction:

There are 3 different driving modes available for normal roads and different load conditions:

Öhlins Racing BM 670 PESA replacement system. Pre set EC-Adjuster positions:

Öhlins Racing BM 670ESA replacement system. EC-Adjustment instruction:

There are 2 different driving modes available for bad roads and terrain:

Öhlins Racing BM 670 PESA replacement system. Pre set EC-Adjuster positions:

• 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

ESA replacement system compared to enduro-ESA

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.

Öhlins Racing BM 670

Smart EC function in Comfort mode

Spring pre-load adjustment uses very low power consumption, < 2.6

Ampere, (BMW Enduro ESA:

BMW Motorrad ESA systemUnique features

Smart EC function, speed dependent!

(<80, 80-120, >120 km/h)

4 damping adjusters, instead of 2 on original

BMW Enduro ESA

Spring pre-load changes with

damping levels

Significantly improved tyre

feeling

Full maintenance possibility

Familiar Öhlins Racing high end quality and look

Future possibility to fit springs with different

rate

Price level compared to original BMW spare parts is

good

Individual spare parts available

The system is manouvered by BMW ESA button via CAN bus and

uses the std BMW dashboard symbols

Future upgrade possibilities

Patented TTX technology