The Stadtroller „SR 59-Berlin“ is a Product of VEB Industriewerke Ludwigsfelde.
This operating manual was was written by a collective of Authors of the VEB Industriewerke Ludwigsfelde.
All rights reserved – Technical books press Leipzig GDR – Type setting and print: Technical books print Naumburg (Saale) GDR. KG 12/3/60
A lot of unnecessary frustration will be avoided if you don´t put this operating manual aside carelessly, but instead briefly familiarize yourself with the directions and suggestions this manual provides. All sections of this manual have been compiled by skilled personell and serve the purpose of imparting knowledge about this vehicle to you without which the operation of a modern motorvehicle would just be impossible. We want to give you the maintenance and care advice necessary for you to be able to enjoy your vehicle, instead of having to spend your valuable free time at an authorized dealers shop, that you should better use for your own recreation.
It´s a simple fact that any new motorvehicle should be treated with a lot of care and attention. This is why you will save lots of money, frustration and potential anger if you apply the knowledge gained from this operating manual. Not only should you consider the given advice for a single ride, but for the entire time in which you drive your motorscooter.
Please consider that the observance of our advice essentially contributes to the preservation of your property and thus to the peoples property.
If you don´t find the information on the following pages sufficient or if you need additional advice, you can always contact one of our authorized dealers. They will always help and advise you, because our authorized dealers ought to avoid repairs before they happen by making qualified suggestions and giving helpful advice.
VEB Industriewerke Ludwigsfelde
Section 1: Technical Details
1.1 Engine
Two-stroke motor with reverse flushing
Hub - 58 mm
Bore - 56 mm
Cylinder arrangement - 1 cylinder set at 15 degrees forward
Displacement - 143 cc
Compression ratio - 7.75:1...8.1
Capacity - 20.4 cc
Power at 4000 rpm - 6.5 PS
Maximum power at 5100 rpm - 7.5 PS
Max torque at 3500 rpm - 1.15 kgm
Air cooling by axial pressure blower
Lubrication ratio - 1:25
Carburettor
Type - 24 CN 1-1
Inlet - 24 mm
Main jet - 90
Nozzle needle - 67
Idle jet - 45
Needle position - 3
Part of Vane - 4 mm
Idle air screw - 2.5...3 turns
Float weight - 10.6 g
Air Filter - Prallblech Naßluftfilter with Intake
Ignition
Battery ignition
Spark plug - Insulator M 14-240
Thread length - 10 mm
Electrode gap - 0.6 mm
Breaker contact spacing - 0.4 mm
Vorzündung - 4 mm v. OT (28° crank angle), fixed
Pistons
Material - Si 20
Piston rings - 2 compression rings
About sizes
Cylinder Dmr. 56.25, 56.50, 56.75, 57mm
Crank shaft bearings
Number - 3 Rillenlager rings
Connecting rod bearings - Dual roller bearings, käfiglos with cutting disc
Dimension - 5x5 DIN 5402
1.2 gearbox and power transmission
Clutch
Multi-disc wet clutch in oil
Covering - Reiblamellen 'original Cosid'
Number of pressure springs - 6
Gear at motor angeblockt, claws circuit
Number of gears - 4
Idle display - Elect. Amaturenbrett in check, left
Circuit by foot gear and Schaltautomat
Gear steps
1st gear ratio - 3,05:1
2nd gear ratio - 1,805:1
3rd gear ratio - 1,285:1
4th gear ratio - 1:1
Transmission
Engine to gearbox - 2,75:1
Gear box to rear sprocket - 2,19:1
Total translation
1st Monitoring - 18,4:1
2nd Monitoring - 10,8:1
3rd Monitoring - 7,73:1
4th Monitoring - 6,02:1
Kickstarter translation 3,76:1
Power transmission
Engine / gearbox
Raise chain 3/8x7, 7x5 Dmr., 44 members
Gear / rear - 1/2x1/4x8 roller chain, 51 Dmr. 94 rolls
1.3 Brakes
Foot brake acts on rear wheel. Interior jaw brake activated by Bowden cable.
Handbrake acts on front wheel. Interior jaw brake actived by Bowden cable.
150 mm diametre hub brake drums on front and rear.
Pad width - 24 mm
Material - 'Original Cosid' glued to shoe.
1.4 Wheels
Type - Full disc wheels, light metal
Axles
Front: normal axis with dropouts
Rear: downhill
Rims
Low-bed rims 2.50 Cx12
Tyres
Dimension 3,50-12
Type - Block profile
Air-pressure - Front 1.2 atü solo, ear 1.5 atü solo F.
Atü front 1.4 m. Soz.
Atü rear 2.0 m. Soz.
1.5 Suspension
Front suspension - Schwinghebelgabel, screws pressure spring with friction dampers
Effect proportional
Deflection - 110 mm
Rear suspension - Keystone arm, torsion bar springs (patent), hydr. Hampered
Effect proportional
Deflection - 70 mm
1.6 Steering
Steering head angle 25°
After running front - 75 mm
Stop driving on the forehead tube
Steering angle 90°
More to come.....
