3a. Belt driven bike
Important: A loose belt will increase the risk of
injury due to slipping and a highly over-tightened
belt can cause damage to the ball bearings of the
drive system and lead to excessive wear.
Correcting the belt tension:
To correct a loose belt: To adjust the belt, pull
off the right and the left maintenance covers (A).
Loosen the axle nut (B) on both ends of the
flywheel axle two full turns.
Loosen the outer adjustment nut (C) facing the
head of the allen bolt on each side of the flywheel.
Then, turn both (right and left sides) of the inner
adjustment nuts (D) on the inside of the flywheel
bracket 1/4 of a turn at a time (upward on the R
side and downward on L side) until the belt is
properly adjusted and does not slip. Make sure to
turn both adjustment screws exactly the same
amount to avoid misalignment of the flywheel.
Finally, retighten the two outer adjustment nuts (C)
and the two axle nuts (B), and reattach the
maintenance covers.
To avoid damage to the flywheel bearings, do
not over tighten the axle nuts (B). Unusual
noises, roughness or vibrations are indications that
the belt has been over tightened, the flywheel or
bottom bracket bearings are damaged or that the
flywheel is at an angle.
3b. User safety
To ensure user safety, frequently check if belt is
firmly tightened and does not slip while riding
under resistance load. In case that the belt slips,
proceed using the same technique as described
above. Please note that a belt drive gear never
shows slack but will slip if not properly tightened.
In case of a misalignment, the belt will show
extensive wear. Please check the wear on the belt
every 3 month of use and replace if necessary.
Please avoid that lubrication fluid gets in
contact with the belt, the drive gear pulleys or
any component of the belt drive system since
this will highly increase the risk of slipping.
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