Electric Speedometer/Tachometer (Speedometer: V45 Sabre); Fuel/Water Temperature Gauges - Honda V 45 SABRE-VF750S 1982 Shop Manual

TECHNICAL FEATURES
W HONDA
® V45
~~:::
ELECTRIC SPEEDOMETER /TACHOMETER (SjJ!edorneter : V45 SABRE)
• Speedometer
The speedometer consIsts of • magnet, speed sensor and speedometer gearbox .
The speed sensor Pfoduces electric pulses proportional to the wheel speed .
• Tachometer
PUISM from the spark unit operate the tachometer. The construction of this tachometer is essentially the same as the
speedometer.
REeT·
IF I ER
TACHOMETEA
SPEEOOMETEA(TACHOMETEA ASSY
SPEED
MAGNET
FUELjWATER TEMPERA TUBE GAUGES
SPARK UNIT
TACHOMETEA
IGNITION CO IL
In order that the rider w Ill know at all times the water temperature in the cooling system, a temperature indicator is installed.
The sensor uses a thermIstor, whose resistance decreases wi t h a fise in temperature allowing more yoltage to
be
applied to the
L.C,D , lighting more segments.
The fuel gauge uses a tank unit which contains a sliding con t act and a float. The contact sl ides back and forth on a resistor
as the float moves up and down in the fuel tank.
Both gauges contain an L .C.D. unit operated by outputs from a micro·compu t er for the digital display as shown .
23-8
r--------
G/ L
THERMISTOR
r-- -- --
ylW •
FUEL UNIT
POTENTIOMETER
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.I
A ·D
n l.
,
I
CONVERSION
,
,
,
J
AD
.J.
. I
CDNVE RSION
356
L .C.D.
(LIQUID CRYS TAL DIODE)
-
MICRO-
:.J
COMPUTE R
11I1I11I1
I
Date of Issue: May, 1982
© HONDA MOTO R CO., LTD.
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