Production Model Years
1928 - 1929
Frame and Engine Numbers
20000 - 30600 / 47001 - 51383
Model Specifications
Drivetrain
Displacement 486cc
Cylinders 2
Bore x Stroke (mm) 63 x 78
HP @ RPM 12 @ 3400
Compression Ratio 5.0:1
Valves Sidevalve, 2 per cylinder
Clutch Dry, single plate (dual plate from engine #50761), cable operated
Transmission 3 speed, hand shifted
Final Drive Driveshaft
Running Gear
Frame Tubular double loop, brazed
Front Suspension Undamped, trailing link, leaf spring
Rear Suspension Rigid
Front Brakes 200mm drum, single leading shoe
Rear Brakes Contracting shoe drum on driveshaft, heel operated
Electrical
Ignition Bosch magneto
Spark Plugs Bosch M175
Generator Optional Bosch D2 type magneto/generator, 6V 45W
Capacities & Measurements
Weight 152kg
Fuel 12.5l
Wheelbase 1400mm
Top Speed 100kph
Number Produced 4377

Comments

R51/52 Pre war parts

dooox's picture

I have all these original parts in a great shape
Please e-mail me directly for more info and more pictures
dooox@aol.com
714-720-4008

I have more detail pictures

PreviewAttachmentSize
b1.jpg
b1.jpg1.43 MB
b3.jpg
b3.jpg2.08 MB
b4.jpg
b4.jpg1.81 MB
b8.jpg
b8.jpg1.89 MB
48.jpg
48.jpg1.52 MB
20.jpg
20.jpg1.21 MB
60.jpg
60.jpg1.46 MB
42.jpg
42.jpg1.63 MB

More Pictures

dooox's picture

R51/52 Pre War

PreviewAttachmentSize
16.jpg
16.jpg1.63 MB
34.jpg
34.jpg1.57 MB
38.jpg
38.jpg1.6 MB
17.jpg
17.jpg1.32 MB
17-0.jpg
17-0.jpg1.48 MB
43.jpg
43.jpg1.33 MB
b9.jpg
b9.jpg1.59 MB

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