MZ RT - SX / SM 125

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MZ 125 SX and MZ 125 SM are model names for motorcycles , which were built from 2001 to 2008 by the German manufacturer MZ . Both machines are technically based on the small MZ RT 125 road machine that appeared a year earlier.

Technical specifications

engine

  • Displacement: 125 cm³
  • DOHC valve control 4 valves operated by bucket tappets
  • Water-cooled single cylinder four-stroke engine
  • Compression: 11.2: 1
  • Top speed: 110 km / h
  • Output: 11.18 kW (15 hp) at 9000 rpm
  • Torque: 11.7 Nm at 8500 rpm
  • a cylinder, standing, inclined 10 ° forward
  • Bore × stroke: 60 mm × 44 mm

Mixture preparation

  • Round slide carburetor Mikuni VM 24
  • Venturi tube diameter: 24 mm
  • Main jet: 100
  • Idle jet: 15
  • Jet needle setting: 4th notch from the top
  • Idle mixture screw - setting: 1-2.5 turns
  • Idle speed: 1800 / min
  • Fuel level: 32 mm below the center of the carburetor
  • Float height: 20 mm from the sealing surface of the carburetor housing

transmission

  • mechanically operated multi-plate oil bath clutch
  • Six-speed spur gear change gearbox, claw shift
  • Switching scheme: 1, N, 2, 3, 4, 5, 6
  • Gear ratio pinion / chain wheel: 16/52 (SX), 16/49 (SM)

landing gear

  • Empty weight: 119 kg (SX), 121 kg (SM)
  • permissible total weight: 320 kg
  • Seat height: 860 mm (SX), 830 mm (SM)
  • Total length: 2185 mm (SX), 2010 mm (SM)
  • Front suspension, travel: telescopic fork, 220 mm
  • Rear suspension, travel: central spring strut, 220 mm (adjustable spring base)
  • Frame design: open tubular frame
  • Rim size front: 1.85 × 21 (SX), 3.0 × 17 (SM)
  • Rear rim size: 2.5 × 18 (SX), 3.5 × 17 (SM)
  • Front tires: 90/90 - 21 (SX), 110/70 - 17 (SM)
  • Rear tires: 120/80 - 18 (SX), 130/70 - 17 (SM)

Brakes

  • front and rear hydraulic 2 pistons (floating caliper) single disc brake
  • Front diameter: 280 mm
  • Rear diameter: 220 mm

fuel

  • Consumption: approx. 3.5 l / 100km
  • Fuel quantity: 12.5 l
  • Reserve fuel: 3.6 l

electronics

  • On-board voltage: 12 V.
  • Battery: 12 V, 9 Ah
  • Ignition: contactless capacitor ignition
  • Speed ​​limiter: 10500 / min
  • Spark plug, electrode gap: NGK CR8E, 0.7 mm
  • Generator: AC generator 180 W at 5000 rpm

SX 125

MZ 125 SX

The SX 125 is a light Enduro with a four-valve -Einzylinder- four-stroke engine with two overhead camshafts , 124.4 cc capacity, a six-speed transmission, a power of 11 kW (15 HP) at 9,000 min -1 and a speed of 110 km / h .

In 2004 the French Army ordered 502 MZ SX 125 units. The machines were delivered in black and are also equipped with hand protectors, top cases , tank bags and stronger engine protection.

SM 125

MZ 125 SM

The SM 125 is a light supermoto and differs from the SX primarily in the tire dimensions and secondary transmission adopted from the RT 125 as well as the 30 millimeter lower seat height. As part of the "Super Moto Inter-DM", the so-called MZ Youngster Cup will be held on the MZ SM 125. The Cup version has a Wilbers shock absorber, harder Wilbers springs in the fork and a sports exhaust system from Sebring.

The machines are models that are as close as possible to series production with very minor modifications. Well-known young drivers have emerged from the MZ Youngster Cup (e.g. Nico Joannidis )

supporting documents

  1. ↑ Model for the French army

literature

  • Andy Schwietzer: Typenkompass MZ - motorcycles since 1950. 2nd edition. Motorbuch, Stuttgart 2005. ISBN 3613021218
  • Motorrad- und Zweiradwerk GmbH: Repair instructions MZ 125 SX / SM

Web links