"Ponton-Mercedes", four-cylinder types (W 120, W 121)
Mercedes-Benz type 190 chassis with four-door partial body
Type 190 chassis with four-door partial body 
Name 190 chassis with four-door partial body 
Name Mercedes-Benz type 190 chassis with four-door partial body 
Short name 190 chassis with four-door partial body 
Model W 121 B I 
Production 1956 - 1959 
Number produced 354 chassis with 4- and 2-door partial body, resp. 
Comments concerning the production period  
Prices 8.750,00 DM 
Wheelbase 2650 mm 
Track rear/front 1430/1470 mm 
Length  
Width  
Height  
Smallest turning circle  
Chassis weight
Max. total weight  
Max. front axle weight  
Max. rear axle weight  
Max. load  
Max. trailer weight braked  
Max. trailer weight unbraked  
Weight empty  
According to guideline  
Operating method four-stroke Otto 
Configuration front, parallel; upright 
Type M 121 B I / 121.920 
No. of cylinder/configuration 4 / in line 
Bore x stroke 85 x 83,6 mm 
Total displacement 1897 ccm (tax classification: 1882 ccm) 
Compression ratio 7,5 
Crankshaft bearing
Output 75 hp at 4600 /min 
Maximum torque 13,9 mkg at 2800 /min 
No. of valves/configuration 1 intake, 1 exhaust / overhead 
Valve operation top camshaft 
Camshaft drive duplex roller-type chain 
Mixture formation 1 register-downdraught carburetter Solex 32 PAITA 
Cooling water cooling / pump; 9,3 l water 
Lubrication pressure circulation lubrication / 4 l oil 
Electric system 12 V 
Battery 56 Ah / in the engine compartment 
Dynamo 160 W 
Starter motor electrical / 0,8 PS 
Ignition battery ignition 
Fuel tank in the rear / 56 l 
Fuel supply diaphragm pump 
Driven whells rear wheels 
Power transmission divided cardan shaft 
Frame desing floor assembly / self-supporting all-steel body 
Wheel suspension front double wishbone 
Wheel suspension rear single-joint swing axle 
Suspension front coil springs, torsion bar stabilizer 
Suspension rear coil springs 
Damper hydraulic telescopic damper 
Steering recirculating-ball steerg. 
Steering transm ratio 18,5:1 / 3,5 steering wheel turns 
Breaking system braking system 
Breaking system hydraulic, on demand with vacuum-operated brake servo unit, effective on front- and rear wheels ; drum brakes front and rear 
Parking breake parking brake 
Parking breake mechanical, effective on rear wheels 
Diamatre brake drums front / rear: 230 mm 
Wheels sheet steel-disc wheels 
Wheels rims drop centre rim 4 1/2 K x 13 
Tyres 6,70-13 

Skrzynie biegów tego modelu (gearbox and performance):

"Ponton-Mercedes", four-cylinder types (W 120, W 121)
Mercedes-Benz type 190 chassis with four-door partial body
Gearbox 4-speed gear shift 
Availability Series 
Shifting Gear shift 
Clutch Single-plate dry clutch 
Type of gearbox Pinion change gear 
Synchromesh gears I - IV 
Gear transmission I. 4,05; II. 2,38; III. 1,53; IV. 1,0; R. 3,92 
Differential ratio 4,10 
Maximum speed  
Accelerations  
Comments  
Fuel consumption  
acc. to guideline