Rear shock RD03 - RD07A

[Kjell Lindberg]

Some information from different sources on the webb:

Rear shock RD03 and RD04:
Free length = 240 mm
Spring 9.5 turns
Diameter damping rod: 14 mm
Internal diameter: 57 mm
Diameter: 85 mm
Weight 2200 gr
SPRING RATE = 100kg/cm
0 kg (free length)> 240 mm (0 mm compression)
50 kg> 235 mm (5 mm compression)
103.9 kg> 229 mm (11 mm compression)
150 kg> 224 mm (compression 16mm)

Rear shock RD07 and RD07A
Free length = 245.5 mm
Spring: 9.5 turns
Diameter damping rod: 12 mm
Internal diameter: 57 mm
Diameter: 81 mm
weight 1800 gr
SPRING RATE = 70kg/cm
0 kg (free length)> 245.5 mm (0 mm compression)
113.5 kg> 230 mm (15.5 mm compression)
147.2 kg> 225 mm (20.5 mm compression)
152 kg> 224 mm (compression 21.5 mm)


Race sag

The rear suspension on the Africa Twin has a length of movement of 70 mm.
However these 70 mm becomes 210 mm amplified through the Pro-Link that has a 1:3 rate.

Rule of thumb states that Race sag usually should be 1/3 of the maximum suspension travel:
http://www.4strokes.com/tech/racesag.asp

1/3 of 210 mm is 63 mm.

//Kjell