Ax-lightness engage Operations Instructions download pdf (Page 27)

Tubular tyres

To ensure a durable t, a tubular tyre needs to be

mounted carefully. The mounting needs to be carried

out in several steps and may require a little time. A

little practice and experience with the glue you are

using and the respective tubular model can speed up

the job.

There are two possibilities of gluing a tubular tyre to

the rim (a), i.e. with adhesive tape or with liquid tyre

glue. Using adhesive tape will speed up the mount-

ing, the tyre, however, will not t as reliable as with

liquid glue. In the event of a puncture the tape will of-

ten cling to the dismounted tyre and your spare tyre

may not bond to the rim suciently well.

Multiple thin layers of liquid tyre cement (tyre glue)

will ensure a better t of the tyre. The coat of glue

will stick to the rim even after tyre removal and x the

spare tyre still suciently for the careful ride home.

Afterwards, however, the spare tyre needs to be re-

moved and xed once again with a new layer of tyre

glue. Tyre glue does also sticks to ngers and clothes.

For this reason put on old working clothes when

mounting tyres.

AX-Lightness and engage recommend that you use

Conti carbon glue or Tufo gluing tapes. We cannot

recommend using any other products.

A poorly glued tyre can come o the rim.

Risk of accident!

Have a tubular tyre mounted by an

AX-Lightness and engage dealer for your

own safety.

There is special tubular tyre cement (e.g.

from Continental) for carbon rims (a). Be-

fore using this type of glue, read the oper-

ating instructions.

Observe the video showing the secure glu-

ing of Continental tubular tyres on carbon

rims at www.conti-online.com

Tyre removal

To remove the tyre, start opposite the valve by push-

ing the tyre to the centre of the rim until there is a gap

and the tyre starts to come o

(b). If it does not, slide a

plastic tyre lever into the gap to lift o the tyre. Move

the tyre lever around until the tyre comes o the rim

(c). Subsequently you can pull the tyre o the rim (d).

Tyre mounting with common

tubular tyre glue

Remove the protective valve cap and screw a valve

extension, if necessary, to the valve head unscrewed

before, if you intend to mount the tyre on a deep rim

(e).

Inate the tyre to a point where it starts to become

round and then stick the valve through the valve

hole. Starting from the valve and working in both

directions, press the tyre into the tyre bed all the

way round, as described further below (f). If you are

unable to mount the tubular tyre completely on the

rim or only with excessive forces, it is possible that it

cannot be mounted properly. Do not stretch the tyre,

by putting your foot in it and pulling it forcefully up-

wards with both hands. Ask somebody to help you

instead.

After mounting the tubular tyre (not yet glued!), spin

the wheel and see whether the tyre runs true (g). The

area where the valve comes out of the tyre is often

thickened which leads to a runout of the rim and

makes the wheel jolt during the ride.

Check the proper seat of the tyre and correct it. If nec-

essary, ask your AX-Lightness and engage dealer for

advice. Replace the tyre, if necessary.

The fully inated tyre on the rim should be stored

away in a dry place for a few days, at least however for

24 hours. This will ease the mounting.

Wind adhesive tape around the valve to

avoid any rattling during the ride

(h).

50 51

Rims - Wheels

d h

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Ax-lightness engage Operations Instructions Page 27

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