Zündapp DBK 250

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Motor:
Operation Two Stroke
Cylinders 1
Operation Two Stroke
Boremm 67
Strokemm 70
Displacmentccm 247
Cmbstn. Cmbr.ccm 52 + 1
Compression Ratio 1 : 5.8
Power @ RPM 8.5 HP/3850
RPM @ 60kph 3050
# of Crank Bearings 3 Bearings
Con Rod Bearing Type Needle + Cage
Motor Lubrication Oil + Gas mixture
Oil Mixture:  
Break-in 1:20
After Break-in 1:25
Piston Type Alloy
Piston Pin Bearing Floating
Control Type Slots(Reeds?)
 
Electrical System:
Ignition System NORIS 30/50 Watt
Battery Bosch
Ignition Timing None
Timining Advancemm 5-5.5 B.T.D.C.
Carburetor:
Make and Model Bing A J 2/22
Throat mm 22
Main Jet 90
Upper Needle Clip 2 stop
Airscrew turns 1
Mix. chmbr insrt Nr. 4
Separate Air regulator Yes
Airfilter Zündapp
 
Transmission & Drive:
Transmission 3 gears, Zündapp
Transmission Assembly With the block motor
Trans. to Motor Chain ⅜" × 7.7 mm, 64 links
Primary Drive Chain ½" × 516", 124 links
Clutch Wet, multi disc
Gear shift Hand shift on frame
Trans. reduction ratio Solo
1st Gear 1 : 17.2
2nd Gear 1 : 9.95
3rd Gear 1 : 5.75
Total rdctn. to Trans. 1 : 1.88
Total rdctn. to Wheel 1 : 3.06
Kick Starter Enclosed in Trans.
Top Speed kph 85-90
Chassis, dimensions, etc .:
Frame Boxed, pressed steel
Frame connections Bolted
Foot rest Adjustable
Kickstand Center stand
Front fork susp. Compression Spring
Shock Absorber hand adjustable
Brakes Drum
Wheel Rims 19" × 2.5"
Tire Size 19" × 3" Steel belt
Tire Pressurepsi Front: 38, Rear: 40
Wheels quick-release axles
Wheel basemm 1335
Total Lengthmm 2080
Total Widthmm 750
Total Heightmm 900
Seat Heightmm 700
Ground Clearancemm 105
Turning Radiusm 5
Max Loadkg 155
Fuel CapacityLtr. 12
Weight w/o fuelkg 117
Weight wetkg 124
Telegram word: DEBKA
Equipment: Black high gloss finish, large compression spring saddle, adjustable handlebars, twist grip throttle, rubber knee pads, electric horn, complete tool kit, air pump, hinged rear-wheel fender, double covered rear-wheel chain, detachable mufflers.
Accessories: Protective leg shields, steering damper, anti-theft lock, ligted speedometer (outer diamter 77mm) in the headlight bucket.