MY23P0a -52_1.0_11.10.2022
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Operation
6.5.4.3 Determining minimum saddle width with
corrugated cardboard
1 Place corrugated cardboard on a flat, hard,
unpadded seat.
2 Sit in the middle of the corrugated board.
Figure 107: Sitting on the corrugated board
3 Pull the seat with your hands and arch your
back.
The sitting bones are more prominent and
stand out more clearly on the corrugated
cardboard.
4 Trace the outer edges of the two depressed
areas in a circle.
5 Determine the centre of both circles and mark
them with a dot.
6 Measure the distance between the two
centres.
.
Figure 108: Measuring the distance
The distance between the two centre points is
the sit bone distance and corresponds to the
minimum saddle width.
7 Calculate saddle width (see Section 6.5.4.4).
6.5.4.4 Determining minimum saddle width
with gel cushion
1 Smooth gel cushion.
2 Place gel cushion on a flat, hard, unpadded
seat.
3 Sit in the middle of the gel cushion.
Figure 109: Sitting on the gel cushion
Pull the seat with your hands and arch your back.
4 The sitting bones are more prominent and
stand out more clearly on the gel cushion.
Figure 110: Adding the centres together
5 Determine the centres of both sitting bones.
6 Add the two values together.
The total of the values is the sitting bone
distance and corresponds to the minimum
saddle width.
7 Calculate saddle width (see Section 6.5.4.4).
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