Kettler SHIMANO KS127 Series Translation Of Original Operating Instructions page 30

Negative deflection (sag)
The sag is the percentage of total spring
deflection that is compressed by the rider's body
weight, including equipment (such as a
backpack), their seating position and frame
geometry. Sag is not caused by riding.
Figure 9: Optimum fork ride performance
When optimally adjusted, the fork counteracts
deflection, stays higher in its deflection range and
Figure 10: Optimum fork ride performance on hilly terrain
When optimally adjusted, the fork deflects quickly
and unhindered when the bike hits bumps and
absorbs a bump. Traction is retained (blue line).
Figure 11: Optimum fork ride performance over bumps
MY22K03 - 32_1.0_13.09.2021
The pedelec rebounds at a controlled speed if it is
optimally adjusted. The wheel stays in contact
with the ground when passing over bumps (blue
line). The fork head, handlebars and body roughly
follow the terrain (green line) when riding over
bumps. The suspension motion is predictable and
controlled.
helps the rider to maintain speed while riding on
hilly parts of terrain.
The fork responds quickly to the bump. The
headset and handlebars rise slightly when
absorbing a bump (green line).
Overview
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