b'Twin Bicycle, User Manual

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ADJUSTING THE DERAILLEUR GEAR SYSTEM
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These procedures are also difficult: we recommend you consult one of our qualified technicians.
NB: Problems when changing gear are very often linked to the derailleur cable tension; adjusting the derailleur travel
is much less common.
1 – Adjusting rear derailleur movement
So that the chain does not leave the cogs (in the wheel spokes
or between the rear dropout and the cogs), it is important
to adjust the derailleur travel using the H and L stops:
• the H screw enables you to adjust the lower stop
(small cog side): Undoing this screw moves the chain further
out towards the small cog
• the L screw enables you to adjust the top stop (large cog side):
Undoing this screw moves the chain further
out towards the large cog
2 – Adjusting front derailleur movement
3- Adjusting derailleur tension
Adjusting the cable tension creates a link between a position on the gear lever and a position in the gear system.
Unscrew or tighten the cable tension screw at the lever or at the rear of the derailleur so that each lever position
corresponds to a cog:
If the chain does not move down every time you shift the lever.
• loosen the cable by turning the cable tension adjusting screw clockwise.
=> If the chain does not move up every time you shift the lever.
• tighten the cable up by turning the cable tension adjusting screw anticlockwise.
Adjusting the inner stop
By turning the outer screw of the front derailleur in
direction A, the derailleur range moves towards to the
smallest chain ring; by turning it in direction B, it moves
away from the large chain ring. Then adjust so that the
clearance between the chain guide inner plate and the
chain is between 0 and 0,2 in (0 and 0.5 mm).
Adjusting the outer stop
By turning the inner screw of the front derailleur in
direction A, the derailleur range moves away from the
smallest chain ring; by turning it in direction B, it moves
towards the large chain ring. Then adjust so that the
clearance between the chain guide outer plate and the
chain is 0 and 0,2 in (0 and 0.5 mm).
Cable bolt washer
INNER STOP
ADJUSTING SCREW
Chain guide
inner plate
OUTER STOP
ADJUSTING SCREW
Cable bolt
washer
derailleur stop
frame bolt
H stop screw
L stop screw
Chain
Chain
Chain guide
outer plate