Cadenza Offset Bottom Bracket; Replaceable Derailleur Hanger - DAHON Bicycle Owner's Manual

Cadenza Offset Bottom Bracket

WARNING: If you are in any way
unsure of how to make these
adjustments yourself, take your bike to a
qualified technician for professional
adjustment.
The Cadenza frame comes with an eccentric
bottom bracket (BB) shell, which has an al-
loy insert that is held stationary by 2 clamps.
These 6mm screw threads should be lightly
greased and tightened to 60-100 in./lbs. Loos-
ening these screws allows the drive chain to be
tightened or loosened. The BB (68 mm x 1.37"
x 24 tpi BSC) installation requires special tools
and special knowledge and if you lack either
of these, please consult your local Dahon bike
dealer. The adjustment of the eccentric BB
shell requires a pin spanner wrench, a 6mm Al-
len wrench, and perhaps a chain tool and some
extra links.
Installing a rear wheel with a hub gear or
single-speed rear wheel
When a single cogwheel is installed on the
rear dropouts, the chain may need a chain
link added or subtracted to correct chain
length. With the chain fully installed on both
sprockets, the chain is the correct length
when the rear axle is fully engaged and you
can tension the chain by adjusting the BB
only. The "chainline," or how straight the
chain runs between front and rear sprock-
ets, becomes important with the chain run-
ning on two sprockets. (With a multi-speed
derailleur, one sprocket is in front and many
sprockets are in the rear. Chainline is al-
ways important, but derailleurs are forgiving
and single sprockets front or rear are not.)
You may need to overhaul the BB to place a
thin spacer or spacers under the stationary
cup of the BB set.
Use of the rotating eccentric BB shell to
adjust chain tension
The eccentric BB insert can be rotated to in-
crease or decrease the chain tension. With
the BB installed and the drivechain con-
nected, loosen the Allen bolt and rotate the
eccentric BB with an adjustable pin spanner
wrench. In rotation of the chain, you find a
"tight spot" and a "loose spot." Adjust the
chain tension so that there is smooth rota-
tion on the tight spot and tighten and torque
the eccentric BB clamp screws.
Replaceable Derailleur Hanger Installa-
tion Instructions
WARNING: If you are in any way
unsure of how to make these
adjustments yourself, take your bike to a
qualified technician for professional
adjustment.
If you have an alloy frame bicycle with the Da-
hon Neos derailleur and want to install a longer
arm rear derailleur, you will need to install the
extra derailleur hanger Dahon has supplied
with the bike. This instruction is designed to
advise you on how to install this simple frame
replacement part. Please note the complexity
of this simple task, so be aware that there are
both special tools and special bicycle mechani-
cal knowledge necessary. If you are lacking
either of these, Dahon strongly suggests
you consult your local Dahon bicycle shop
professional.
To replace your hanger derailleur, please go to
your local Dahon dealer.
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