750 Side Valve

Model

M-72

M-72M

M-72K

M-72H

K-750

K-750M

MT12

Years

1941-1956

1956-1960

1954-1960

1956-1959

1959-1963

1963-1977

-1984

Factory

MMZ, IMZ
KMZ, ГMZZMZ,
K-0

IMZ

Mainly Military

IMZ - End of
IMZ 750 production

KMZ

Military
Production

KMZ

Military
Production

KMZ

Military
Production

KMZ

Civilian + 
some army

Capacity

746

746

746

746

746

746

746

Compression Ratio

5.5

5.5

5.5

5.5

6.0

6.0

6.0

Power BHP

22

22

27

22

26

26

26

RPM for max power

4600

4600

5000

4600

4900

4900

4900

Torque [Nm]

4.0

4.0

4.2

4.0

4.2

4.2

RPM max torque

3200

3200

3500

3200

3200

3800

Front fork

Telescopic

BMW Type

Telescopic

BMW Type

Telescopic

BMW Type

Leading link,
as M53

Leading link

Telescopic

New design

Telescopic

New design

Rear suspension

Plunger

Plunger

Plunger

Plunger

Swing arm

Swing arm

Swing arm

Air filter

net

Inertia / oil

mesh

Inertia / oil

Inertia / oil

Inertia / oil

Inertia / oil

Generator

Г11

Г11A

Magneto

Г11A

Г11A

Г414

ГГ414

Regulator

PP-1

PP-31A

None

PP-31A

PP-31A

PP-302

PP-302

Front Brake

SLS

SLS

SLS

SLS

SLS

SLS

TLS

Dry Weight [kg] solo

With sidecar

205

336

211

340

190

227

204

335

204 or 210

315 or 335

209

318

-

?

Load max [kg] solo

With sidecar

219

359

225

380

204

267

-

260

Top Speed kph solo

With sidecar

105

85

105

85

-

120

-

90

-

90

-

90

-

90

Fuel litres/100km at specified kph with sc

5.9 - 50

7.5 – 50

-

6.0 – 45

6.0 – 45

6.0 – 45

9.0 – 65

Wheel base  [mm]

1400

1400

1450

1450

1450

1450

1510

1.

M72 first development (probably under licence) from 1938 BMW R71, BMW’s last side valve motor! M72 used lots in WWII.

2.

IMZ – Irbit in Urals. MMZ-Moscow, ZMZ.-?, K-0 ? ГMZ-Gorky. KMZ – Kiev (Dnieper). (MZ ~ Motor Works).

3.

K-750M had sidecar wheel drive through differential (as BMW WWII R75 system) with diff lock. Exclusively used by military.

4.

MT12 – Sidecar wheel drive through diff. but no lock, sold for civilian use, maybe military use with diff lock. 4 speed & reverse gearbox.