Mercedes Simplex - Axles

Axles

The original 1902 wheels were wooden, with 12 non-removable spokes and pneumatic tires. Later, in 1905, the Mercedes Simplex pioneered cast-steel wheels.

The front and rear axles were modernized progressively, becoming equal in diameter around 1909:

• 1902: 910x90-1020x120. Rear 10% bigger.
• 1909: 915x105-935x135. Roughly equalized.

Attached to these were the two powerful brake systems, one hand-operated and the other by foot:

• the main hand brake acted on the rear wheels, with drum brakes
• the secondary foot brake acted on the chain drive's intermediate driveshaft

Both systems were water-cooled by a sprinkling system over hot zones when braking.

Both axles were rigid, featuring semi-elliptic springs. The steering-axles were located at the extremes, decreasing the transmission of road shocks to the driver's hands.