Rohloff E-14 SPEEDHUB 500/14 Notice Originale page 47

47
Riding noises
Larger diameter tubes offer more room for sound waves thus the noise is amplified.
Different noises are noticeable whilst freewheeling depending on which gear is cur-
rently selected. This is due to different elements of the gear mechanism rotating within
the hub.
Break in period
All the gears and coupling elements of the Rohloff SPEEDHUB 500/14 are built from
specially hardened steel and are precision finished. In the first 1000km use, the Rohloff
SPEEDHUB 500/14 loses microscopic particles from all functioning components as
part of the hubs last fine filing. After this process is completed the riding noises quieten
and the changing of gears becomes easier. During this process it is not necessary to
take extra special care.
Pushing the bike
Should the bike be pushed, it is possible that the cranks could also start to turn. This
occurs due to the hub seal automatically activating the sprocket. Bad seals and a very
light running bottom bracket make it easier for the cranks to turn. A drop of Rohloff
cleaning oil (Art. #8402) onto the Carrier and hub seal will reduce this acivating effect.
One of two different riding noises could be heard
depending upon which gear is selected. A construc-
tion characteristic produces a freewheeling noise
which is can be heard in most gears - particularly
noticeable in gears #5, #6 & #7. A higher frequency
is produced when riding with a higher force upon
the pedals. This causes the volume of the lower
gears to increase towards gear #7 - a typical char-
acteristic of straight-toothed precision gears.
Different frame designs can amplify or deaden
these audible noises because the tubes of the
frames react as a resonator for the sound waves.
Riding noises