Fiat X 1/9 1978 - Starting Motor; Bench Testing Data; Check of Mechanical Characteristics

Page 168
Starting
Motor
Type
..........................................................................................................
E8¢0.8/12
Var.
1
Voltage
......................................................................................................
12
Nominal
output
.............................
..
0.8KW
Direction
of
rotation,
pinion
side
..............................................................
clockwise
No.
of
poles
..............................................................................................
4
Field
winding
............................................................................................
series
Engagement
..............................................................................................
Free
wheel
Drive
......................................................................
.
...................................
Electromagnetic
Diameter
inside
pole
shoes
........................................................................
2.175
to
2.182
inches
(55.25
to
55.42mm)
Diameter
of
armature
................................................................................
2.140
to
2.142
inches
(54.35
to
54.40mm)
Control
......................................................................................................
electromagnetic
Bench
Testing
Data
—Running
test
(at
77°
F
-
25°
C)
Amperage
..............................................................
.
170
Torque
developed
..................................................................................
2.89
=
0.14
ft.
lbs.
(0.40
i
0.02Kgm)
Speed
....................................................................................................
1900
rpm
Voltage
..................................................................................................
9.5
—Stall
test
(at
77°
F
-
25°
C)
Amperage
..............................................................................................
315
Torque
developed
..................................................................................
6.37
i-
0.22
ft.
lbs.
(0.88
:
0.03kgrn)
Voltage
..................................................................................................
7
i
3
—No—load
test
(at
77°
F
—
25°
C)
Amperage,
not
above
............................................................................
30
Speed
....................................................................................................
7000
i
1000
rpm
Voltage
..................................................................................................
11.9
—lnner
resistance
on
starting
(at
77°
-
25°
C)
..........................................
0.022
t
0.001
ohms
Check
of
Mechanical
Characteristics
—Brush
pressure
(unworn)
........................................................................
2.5
to
2.9
lbs.
(1.15
to
1.3kg)
—End
clearance,
armature
shaft
..............................................................
0.0039
to
0.0197
in.
(0.1
to
0.5mm)
#Mica
undercut
depth
............................................................................
0.039
in
(1mm)
minimum
——Free
wheel
efficiency:
static
torque
to
rotate
pinion
slowly
....................
1.5
to
1.9
in.
lbs.
(1.7
to
2.2kglcm)