Bedienungsanleitung Winora Algemene (Seite 68 von 140) (Englisch)

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7.5.6 Mounting Tubeless Tyres

Before mounting a tyre make sure it is free of dirt and lubricant on the inside

and around the beads. Do not use tyre levers!

To prevent any damage, wet both beads all around with soapy water or with

tyre mounting lubricant and press the tyre with your hands onto the rim.

Press one bead over its entire circumference over one edge of the rim and

then the second tyre bead (a). Centre the tyre in the rim. Make sure the tyre

is properly seated in the rim base and the beads lie symmetrically on either

side of the valve. Inflate the tyre with a compressor or a CO2-cartridge to

the maximum permissible pressure so that it can get seated on the rim. The

permissible pressure is usually specified on the side of the tyre.

Check whether the tyre is properly seated by inspecting the fine witness line

(b) just above the rim edge. This line should be even to the rim all around

the tyre. Starting from the maximum tyre pressure you can now reduce the

pressure through the valve to suit your needs. Please observe the recom-

mended tyre pressure range.

Tubeless tyres must be mounted on UST rims or UST wheels

(Mavic and other manufacturers) only.

7.5.7 Removal of Tubular Tyres

To remove the tubular push it a little to the side of the rim at a place opposite

the valve until a gap appears and the tyre starts to come off. If the tubular

remains stubborn, stick a plastic tyre lever into the gap and lift the tyre off

the rim (c).

After a puncture the tubular is no longer securely fixed on the

rim. Be sure to ride back very carefully by taking the shortest

route possible. Do not accelerate or brake hard! For your own

safety, have yourself picked up, if you are in doubt.

7.5.8 Mounting Tubular Tyres

To mount a tubular tyre properly so that it durably stays in place you should

take your time and proceed stepwise. A little practice and experience with

the glue (d) and tubular model you are using can speed up the job!

For your own safety, ask your bicycle dealer to mount a tubular.

Tubular tyres can be glued either with liquid tyre glue or with adhesive tape.

One advantage of using tape is that it can be done fairly quickly. However,

this may not always give a sufficiently firm bond of the tyre on the rim. In the

event of a roadside puncture the tape will often cling to the dismounted tyre

and your spare tyre may not bond to the rim sufficiently well.

A poorly glued tubular tyre can come off the rim. Risk of an

accident!

A better alternative, therefore, is to glue the tyre to a generous bed of several

layers of liquid tyre glue. Glue not only gives a firmer bond, it usually also

remains on the rim when dismounting the tyre. However, back home again

you should remove the spare tyre nevertheless. To achieve a stronger bond

you can then retreat the adhesive bed and the tyre with glue and remount

the tyre.

Tyre glues do not only stick on rims and tyres, they also cling

quite stubbornly to fingers and clothes. This makes it advisable

to wear old clothes when mounting tubulars.

When mounting a tyre on a rim that has already been used, it

may be necessary to remove glue residues and dirt with a steel

brush or with emery cloth. When you are done, wipe the rim

with a soft cloth and benzine (a).

Benzine and tyre glue should only be used in a well aired place,

since both materials are highly flammable. Keep them in a safe

place out of children’s reach!

Remove the protective valve cap and mount a valve extension, if necessary,

to the valve head unscrewed before, if you intend to mount the tyre in a deep

section rim (b). Inflate the tyre to a point where it starts to become round and

then stick the valve through the hole in the rim (c).

Starting from the valve and working in both directions press the tyre into the

rim all the way round. If you are unable to mount it completely on the rim or

if this would require excessive force, leave off trying, since it might not work

with force alone.

If this is the case the pumped up tyre must be kept on the wheel rim for a

few days. Don’t use force to stretch the tyre (d). Then check again whether

the tyre can be easily mounted.

After mounting the tubular tyre, spin the wheel and see whether the tyre

runs true. The area where the valve comes out of the tyre is often thickened

which leads to a vertical runout of the rim and makes the wheel jolt during

the ride.

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