Very slightly inflate the inner tube, do not distend it, place
it
in
the cover
with the valve through the hole in the rim.
Fit
the second edge of the cover,
starting at
a
point diametrically oppohitc the valve and pushing the edge
dotwn into the well of the rim.
If
this is done the I:~st few inches can be
tittcd without using levers.
'1
tyre and rim in section, sho\\.ing on
the left tlie two wired edges ol the tyre
in position on the shoulders of the rim.
The tyre cannot blow off, because the
edges are inextensible-neither can the
tyre edges be lifted by
le\.ers froin the
rim shoulders
elver
the rim edges
Hut
by pushing botli the tyre e(lges
do\\-n
off tlie rim sliouldtrs into the drprcssetl
centre ol the rim at
''1)''
then tlie tyre
edge can be easily lifted off the rim nt
"*."
Thi5 is an easy and simple
operation, and requires no force.
You
cannot
j51tll
the tyre edgy at
".l
"
o\.er the rim eclge nntil tile
tyre etlge at
"R"
is pushed off the
rim sh(~nlder
"C''
clo\\n into the
well
''I),"
then tyre edge at
"A"
comes over the rim easily.
liememl~er the tyre
edges
are inex-
tc~nsil)le force will only clamage
tl~r tyre and cannot stretch the
e(lge.
If levers are used
do
not
(lac force,
:ih
thib nu> d:ln~:lge the heads of the
tyre.
When inflating see that the edgea
oi
the cover are se:lted evenly round
the rim.
This can be checked
hy
the line provided
on
the cover.
PACE
SIXTY-TWO
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