Electronic Cruise Control uses a computer to maintain any "set" speed
over 50kph (30mph). It instantly deactivates by either front or rear
brake lever pressure sufficient to turn on the brake lights. There
is also an electronic clutch switch (ECS) on most models. The ECS
is designed to disable the cruise if the clutch is disengaged inadvertently
while the cruise is engaged.It is not intended to be used to disengage
the cruise in normal use.
To engage the cruise
control you accelerate the bike to the desired speed and press the 'SET'
button. You can accelerate the bike, if desired, by using the throttle.
When the throttle is released the cruise control will take over again
at the previous set speed.
the cruise control speed the "SET" key may be pressed and held.
The speed will gradually increase until the key is released. The
cruise control will then maintain the new speed. Alternatively the
"Tap up" feature allows you to increase the speed by about 1.5 KPH
(1 MPH) each time the "SET" key is momentarily pressed.
the cruise control speed the "RES" key may be used in the same way
as the "SET" key, but this will reduce the speed instead of increasing
If the cruise control
is disengaged by the brakes or the clutch (if the ECS is fitted), the
cruise control may be resumed by pressing the "RES" key. The bike will
gradually accelerate to the previous set speed. The cruise control will
not resume speed if the cruise control has been turned off, either with
the power switch or the bike ignition switch.
The principles behind
your cruise control are very simple:
- The computer monitors
the frequency of electrical impulses generated by magnets passing a
sensor or impulses from the motorcycle's electronic speedometer sender
- When the SET key
is pressed, the computer stores the pulse frequency at the time in memory
and then continuously adjusts the vacuum actuator, which controls the
carburettors (or injectors) to maintain the pulse frequency at the same
figure to which it was set. If the frequency drops below the set frequency,
the computer applies more throttle. If the frequency is above the set
frequency, the computer backs the throttle off. The computer monitors
and reacts to changes very quickly and smoothly so that the speed effectively
remains nearly constant.
There are six major
components in most kits; the computer, the vacuum actuator, the cable
interface unit (CIU), the speed sensor, the switch and the loom.
The functions of
each are described below: ( see
the picture )
- The computer -
monitors road speed, adjusts the throttle by controlling the vacuum
actuator and monitors the switch and brake system (and the ECS, if fitted)
for instructions from these components;
- The vacuum actuator
- controls the carburettor(s) by pulling or releasing a cable which
attaches to the carburettors via the cable interface unit (CIU);
- The CIU - translates
the motion from the throttle grip and the vacuum actuator to the carburettors
via a new cable supplied in the kit;
- The speed sensor
- generates electrical pulses when the bike is in motion;
- The switch - sends
instructions from the rider to the computer;
- The electrical
loom - connects the computer, the vacuum actuator, the sensor and the
switch to the motorcycle's electrical system.
and other components are made to suit specific motorcycle models. Most
brackets supplied with the cruise control are laser cut from '304' grade
stainless steel. The calibration of the computer and ratios in the CIU
are also set up to suit the specific model of motorcycle. Covers are provided
for components if needed for protection or to enhance the appearance of
the cruise control.
Alterations to the
motorcycle are minimal and generally easy, if required. Electrical connection
is simply a matter of plugging the cruise control loom into the motorcycles
loom in most cases, as we have used the same type of electrical connectors
as those used on the motorcycle.
The cable interface
unit is a new component developed and patented by MotorCycle Setup and
is the key to safe cruise control operation on many motorcycles.
See your dealer,
this web site or phone us, for full details of models and prices.