Yamaha YFM25RY Automobile User Manual


 
CHASSIS SPECIFICATIONS
2-10
EAS29130
CHASSIS SPECIFICATIONS
Front suspension
Shock absorber travel 90.7 mm (3.57 in) (4D3D)
88.4 mm (3.48 in) (4D3H, 4D3M)
Spring free length 248.5 mm (9.78 in) (4D3D)
224.6 mm (8.84 in) (4D3H, 4D3M)
Spring rate K1 23.00 N/mm (2.35 kgf/mm, 131.33 lbf/in)
Spring stroke K1 0.0–90.7 mm (0.00–3.57 in) (4D3D)
0.0–88.4 mm (0.00–3.48 in) (4D3H, 4D3M)
Optional spring available No
Rear suspension
Rear shock absorber assembly travel 87.0 mm (3.43 in)
Spring free length 240.5 mm (9.47 in)
Installed length 230.0 mm (9.06 in) (4D3D)
228.0 mm (8.98 in) (4D3H, 4D3M)
Spring rate K1 54.00 N/mm (5.51 kgf/mm, 308.34 lbf/in)
Spring stroke K1 0.0–87.0 mm (0.00–3.43 in)
Optional spring available No
Enclosed gas/air pressure (STD) 2500 kPa (25.0 kgf/cm
2
, 355.6 psi) (4D3D)
1150–1250 kPa (11.5–12.5 kgf/cm
2
, 166.8–
1813 psi) (4D3H, 4D3M)
Rear axle
Rear axle runout limit 1.5 mm (0.06 in)
Swingarm
Swingarm end free play limit (radial) 1.0 mm (0.04 in)
Swingarm end free play limit (axial) 1.0 mm (0.04 in)
Front wheel
Wheel type Panel wheel
Rim size 10 × 5.5AT
Rim material Aluminum
Radial wheel runout limit 2.0 mm (0.08 in)
Lateral wheel runout limit 2.0 mm (0.08 in)
Rear wheel
Wheel type Panel wheel
Rim size 9 × 8.5AT
Rim material Aluminum
Radial wheel runout limit 2.0 mm (0.08 in)
Lateral wheel runout limit 2.0 mm (0.08 in)
Drive chain
Type/manufacturer 520V/DAIDO
Link quantity 91
Drive chain slack 45.0–55.0 mm (1.77–2.17 in)
15-link length limit 239.3 mm (9.42 in)