Maico MD 125

 

 

 

Make Model

Maico MD 125

Year

1971 - 76

Engine

Single cylinder, two stroke, ritary vale inlet

Capacity

124 cc / 7.6 cub in.
Bore x Stroke 54 x 54 mm
Cooling System Air cooling
Compression Ratio 11:1
Oil/Fuel Mixture 1:25
Exhaust Single, chrome, left side

Ignition 

Flywheel magneto, Bosch

Fuel System

Bing slide carburetor, 26 mm
Starting Kick

Max Power

11.7 kW / 15.9 hp @ 7800 rpm
Clutch Wet, cable operated

Transmission 

6-Speed
Final Drive Chain
Frame Double cradle, tubular

Front Suspension

Marzocchi forks

Rear Suspension

Swing arm with 2 spring legs

Front Brakes

Drum, aluminium full hub, 136 mm

Rear Brakes

Drum, aluminium full hub, 136 mm
Wheels Steel alloy, laced wire spokes

Front Tyre

2.50 x 16 in.

Rear Tyre

3.00 x 16 in.
Wet Weight 99 kg / 218 kg

Fuel Capacity 

13.5 L / 3.6 US gal

Colours

Red, Blue, Orange
Top Speed 125 km/h / 77.7 mph

A completely new generation of Maico road-going prototypes were presented in 1964 at IFMA. These were the 50cc and 125cc MD series. "M" stood for Maico and "D" for Drehschieber (rotary valve). However, there were still many problems to overcome with these new disc-valve, two-stroke engines. These were solved by new Development Engineer Günther Schier, who came from Rotax, in Austria, in 1966.

Production took off in 1967 with the MD125 11hp, with yearly updates to follow until 1975. These 125cc MD Maicos were very fast from the beginning. While the 1968 MD125SS road-going model had a class leading 14.5 hp (upped to 16hp in 1971) and an exclusive six-speed gearbox, this output was still far from what the design would eventually achieve. For example, the Maico RS production racer, based heavily on the road bike, achieved 24 to 26hp and created some serious stir among the prevailing Yamaha TA racers on the track.