Designed by Ateliers de construction de motocycles et d'automobiles
Vespa 400 - 1959
The Vespa 400 is a rear-engined microcar, produced by
ACMA (Ateliers de construction de motocycles et
d'automobiles) in Fourchambault, France, from 1957 to
1961 to the designs of the Italian Piaggio company. Two
different versions were sold, "Lusso" and "Turismo".
Celebrity launch
The
car
made
its
public
debut
on
26
September
1957
at
a
press
presentation
staged
in
Monaco.
The
ACMA
directors
ensured
a
good
attendance
from
members
of
the
press
by
also
inviting
three
celebrity racing divers to the Vespa 400 launch.
The car
The
400
was
a
two
seater
with
room
behind
the
seats
to
accommodate
luggage
or
two
small
children
on
an
optional
cushion.
The
front
seats
were
simple
tubular
metal
frames
with
cloth
upholstery
on
elastic
"springs"
and
between
the
seats
were
the
handbrake,
starter
and
choke.
The
gear
change
was
centrally
floor
mounted.
The
rear
hinged
doors
were
coated
on
the
inside
with
only
a
thin
plastic
lining
attached
to
the
metal
door
panel
skin
allowing
valuable
extra
internal
space.
On
the
early
cars
the
main
door
windows
did
not
open
which
attracted
criticism,
but
increased
the
usable
width
for
the
driver
and
passenger.
Instrumentation
was
very
basic
with
only
a
speedometer
and
warning
lights
for
low
fuel,
main
beam,
dynamo
charging
and
indicators.
The
cabriolet
fabric
roof
could
be
rolled
back
from
the
windscreen
header
rail
to
the
top
of
the
rear
engine
cover
leaving
conventional
metal
sides
above
the
doors.
The
12
volt
battery
was
located
at
the
front
of
the
car,
behind
the
dummy
front
grill,
on
a
shelf
that
could
be slid out. The spare wheel was stowed in a well under the passenger seat.
Commercial
The
high
profile
launch
paid
off,
with
12,130
cars
produced
in
1958.
That
turned
out
to
be
the
high
point,
however,
and
output
fell
to
8,717
in
1959
despite
a
price
reduction
for
the
entry
level
2-seater
"normal"
coupé
from
345,000
francs
to
319,500
francs
between
October
1957
and
October
1958.
Commentators
suggested
that
the
chic
image
created
at
the
time
of
the
launch
was
not
always
matched
by
the
car
itself,
with
its
awkward
gear
change,
poor
sound-proofing
and,
especially
before
a
modification
to
the
carburetor
specification,
high
fuel
consumption.
The
car's
origins,
developed
by
a
leading
producer
of
motor
scooters,
was
reflected
in
the
installation,
in
the
Vespa
400,
of
a
two
stroke
(motorbike
style)
engine
which
required
oil
to
be
added
to
the
petrol/gasoline
whenever
the
car
was
refueled.
During
the
summer
of
1958
the
cars
were
fitted
with
a
semi-automatic
device
for
adding
oil
to
the
fuel,
but
a
fully
automatic
fuel mixing device was not included until two years later.
Road test
The
British
Motor
magazine
tested
a
400
de
luxe
saloon
in
1959
recording
a
top
speed
of
51.8
mph
(83.4
km/h)
and
acceleration
from
0-40
mph
(64
km/h)
in
23.0
seconds
and
a
fuel
consumption
of
55.3
miles
per
imperial
gallon
(5.11
L/100
km;
46.0
mpg-US).
The
test
car
cost
351,725
"old"
French
Francs,
usefully
cheaper
than
the
374,000
"old"
French
Francs
domestic
market
starting
price
quoted
towards
the
end
of
1958
for
the
cheapest
version
of
the
larger
but
(even) less powerful Citroen 2CV.
Specifications
Engine
Two
cylinder,
two
stroke,
air
cooled.
Bore,
stroke:
63
mm
x
63
mm
(393
cc).
Motor
cyclists
at
the
time
were
used
to
mixing
oil
into
their
fuel,
but
the
manufacturer
belatedly
realised
that
this
might
compromise
the
400's
standing
as
a
"car",
and
from
the
summer
of
1958
"two
stroke
oil"
was
held
in
separate
reservoir
with
a
semi-automatic
dispenser
on
the
right
side
of
the
engine bay.
Compression ratio
6.4:1 with 12 hp, later increased respectively to 6.6:1 and 14 hp.
Suspension
Four
wheel
independent.
Four
double
acting
hydraulic
shock
absorbers
with
coil
springs.
Front
anti-roll bar.
Manual transmission
3 speed plus reverse, with 2nd & 3rd synchromesh. 4 speed available in non-U.S. markets.
Brakes
Hydraulically operated drums of 6.75 in (171 mm) diameter.
Performance
With
only
18
hp
(13
kW),
top
speed
is
50
to
55
mph
(80
to
90
km/h),
depending
on
road
grade,
wind
conditions,
etc.
Achieving
top
speed
takes
a
leisurely
25
seconds.
Fuel
economy
is
about
5L/100KM.
1959
Engine
393 cc
2 cylinders
Power
14 HP
Top speed
90 km/h
Lenght/width
2,85 m/1,27 m
Weight
360 kg
The collections Vespa 400 was bought
from Italy.
Photos mainly by Matti Kreivilä. Historical facts and technical details of the vehicles provided by Wikipedia. Movies YouTube.