The new BIG Goggomobile
GLAS Isar T700 - 62
The Glas Isar is a small two door four seater car produced
by Hans Glas GmbH at their Dingolfing plant. The car was
first presented as the Goggomobil T600 in September
1957 at the Frankfurt Motor Show, with volume
production starting in August 1958.
Initially
Glas
described
it
simply
as
a
“big
Goggomobil”,
but
in
Autumn
1959
it
was
rebranded
as
the
Glas
Isar.
At
the
same
time
a
kombi
(estate
car)
version
joined
the
range.
A
minor
facelift
occurred in August 1960 and the Isar continued in production till the end of Summer 1965.
Origins
The
car
that
appeared
at
the
1957
Frankfurt
Motor
Show
was
a
prototype
which
in
the
event
differed
significantly
from
the
car
that
entered
production
the
next
year,
in
that
it
used
front
wheel
drive.
In
most
other
respects,
notably
regarding
the
two
cylinder
boxer
engine
and
the
overall
shape
of
the
car,
only
minor
stylistic
changes
differentiated
the
cars
that
went
into
production in 1958 from the 1957 prototypes.
The
front
wheel
drive
prototype
was
unstable,
however,
because
of
the
way
the
engine
was
set
far
ahead
of
the
front
axle,
and
high
above
the
front-wheel
drive
power
train,
in
what
was
a
relatively
light
weight
car.
Setting
the
engine
further
back
in
relation
to
the
front
wheels
would
have
involved
a
level
of
re-engineering
for
which
neither
time
nor
money
were
available.
The
decision
was
therefore
taken
to
switch
to
a
rear
wheel
drive
configuration.
The
late
decision
led
to
issues
with
the
gear
box,
however,
which
could
not
be
redesigned
at
this
stage
and
was
simply
switched
round
to
allow
for
the
fact
that
the
drive
shaft
pointed
in
the
opposite
direction
to
that
previously
envisaged.
For
the
driver,
this
gave
rise
to
a
back
to
front
gear
change,
with
first
and
third
speed
gear
level
positions
nearer
the
driver
and
second
and
fourth
positions
facing
the
front of the car.
The
late
switch
to
rear
wheel
drive
threatened
to
reduce
luggage
space
while
freeing
up
space
under
the
bonnet/hood
above
the
low
profile
boxer
engines,
and
the
manufacturer
took
the
opportunity
to
reposition
the
spare
wheel
to
a
location
under
the
bonnet/hoot
in
a
cradle
above
the engine.
Goggomobil T 700
By
the
time
volume
production
commenced
in
August
1958,
the
T600
had
been
joined
by
the
more
powerful
T700.
In
this
car
the
688
cc
boxer
motor
developed
a
maximum
power
output
of
22
kW
(30
PS)
at
4,900
rpm,
which
provided
for
a
top
speed
of
110
km/h
(69
mph)
and
reduced
by a third the acceleration time to 100 kmh (62 mph).
Name change and range expansion
In
order
to
distance
the
model
from
the
smaller
and
more
minimalist
Goggomobil,
and
possibly
also
to
try
and
distract
from
reliability
and
structural
problems
that
afflicted
early
cars,
November
1959
saw
a
name
change.
The
“Goggomobil
T600”
became
the
“Glas
Isar
T600”
and
the
“Goggomobil
T700”
became
the
“Glas
Isar
T700”.
In
the
manufacturer’s
Lower
Bavarian
homeland
the
River
Isar
is
the
principal
river
and
would
have
enjoyed
a
warm
resonance
with
customers,
though
subsequently,
as
the
company
began
to
implement
an
export
strategy,
it
was
found
that
customers
in
some
non-German
speaking
countries
thought
the
name
“Isar”
sounded
“funny”
and
cars
exported
to
these
markets
were
branded
as
the
“Glas
Isard”
which
presumably
sounded less “funny” .
The
name
change
was
accompanied
by
the
appearance
of
a
3-door
station
wagon
variant
which
was branded as the "Glas Isar K600" or "Glas Isar K700 according to engine size.
Teething troubles
Early
“big
Goggomobils”
suffered
from
serious
reliability
issues,
suggesting
an
excessively
rushed
development
schedule.
The
aluminium
castings
that
formed
the
motor
housings
deformed
at
high
operating
temperatures
leading
to
a
doubling
of
the
fuel
consumption.
Even
more
alarmingly,
until
the
manufacturer
inserted
extra
strengthening
sections
under
the
floor,
the
body
flexed
on
bumpy
roads
so
much
that
small
cracks
appeared
and,
in
extreme
cases,
the
panoramic
windscreen
popped
out
of
its
frame.
Teething
troubles
on
the
early
T600
and
T700
models
burdened
the
manufacturer
with
high
warranty
costs
and
severely
damaged
the
reputation of Glas cars in the market place.
Facelift
The
only
significant
facelift
was
revealed
in
August
1960.
The
cars
grew
an
extra
25
mm
(1
inch)
in
length,
apparently
to
accommodate
the
slightly
more
prominent
rear
lights.
The
option
of
chrome
plated
bumpers
was
added
in
order
to
comply
with
new
construction
regulations
in
the
USA.
The
rear
lights
were
still
vertically
mounted
on
the
corners
of
the
car
underneath
little
tail
fins,
but
they
now
became
larger
and
took
on
a
rectangular
shape,
simpler
than
hitherto.
The
rear
bumper
was
reshaped
to
accommodate
the
larger
lights
and
the
handle
for
the
boot/
trunk
lid
was
repositioned,
along
with
the
light
that
illuminated
the
rear
license
plate.
The
rear
roof
was
reshaped
to
allow
for
a
much
larger
rear
window
which
followed
contemporary
styling
trends and expanded the view out.
Buyers
of
the
smaller
engined
Isar
T600
saw
the
claimed
maximum
power
output
reduced
from
to
15
kW
(20
PS)
to,
14
kW
(19
PS).
Curiously
the
claimed
maximum
speed
of
the
T600
nevertheless
increased
to
105
km/h
(65
mph).
In
September
1959
the
design
of
the
carburetor
had
been
changed
and
the
supplier
switched
from
Bing
to
Solex.
In
1960,
possibly
reflecting
the
increasing
minimum
octane
levels
of
available
fuels,
the
compression
ratio
was
raised
slightly,
and
the
reduction
in
claimed
power
also
coincided
with
one
of
the
two
changes
to
the
lower
gear ratios implemented during the car’s life.
There
was
no
significant
facelift
between
1960
and
1965,
but
towards
the
end
of
the
production
run
the
car
acquired
a
black
synthetic
leather
covering
on
the
dashboard.
In
the
final
cars
the
Isar’s
original
seats
and
steering
wheel
were
replaced
by
those
from
the
newer
and
slightly
larger Glas 1004.
Commercial
Between
1958
and
1965
Glas
produced
73,311
Isar
saloons
and,
between
1959
and
1965
a
further
14,274
Isar
kombis.
57%
of
the
saloons
and
88%
of
the
kombis
were
delivered
with
the
larger
688
cc engine.
Between
1960
and
1965
the
Isar
was
also
built
(badged
as
the
Isard)
at
the
company's
plant
in
Argentina where it is remembered as one of the most popular cars of the 1960s.
1962
Engine
688 cc
2 cylinders
Power
30 HP
Top speed
112 km/h
Lenght/width
3,43 m/1,47 m
Weight
600 kg
Photos mainly by Matti Kreivilä. Historical facts and technical details of the vehicles provided by Wikipedia. Movies YouTube.