Type 190 SL (W 121)
Mercedes-Benz type 190 SL Roadster
Type 190 SL Roadster 
Name 190 SL Roadster 
Name Mercedes-Benz type 190 SL Roadster 
Short name 190 SL Roadster 
Model W 121 B II 
Production 01.55/05.55 - 02.63 
Number produced 25.881 roadster and coup‚s 
Comments concerning the production period begin of production - pre-production batch / main production - end of production 
Prices 16.500,00 DM 
Wheelbase 2400 mm 
Track rear/front 1430/1475 mm 
Length 4290 mm 
Width 1740 mm 
Height 1320 mm (with cabriolet top closed) 
Smallest turning circle 11,0 m 
Chassis weight
Max. total weight 1400 kg; since 1960: 1440 kg 
Max. front axle weight 680 kg; since 1960: 690 kg 
Max. rear axle weight 720 kg; since 1960: 750 kg 
Max. load 260 kg; since 1960: 280 kg 
Max. trailer weight braked 1200 kg 
Max. trailer weight unbraked 620 kg 
Weight empty 1140 kg; since 1960: 1160 kg 
According to guideline DIN 70020 (with fuel, spare wheel and tool equipment) 
Operating method four-stroke Otto 
Configuration front, parallel; upright 
Type M 121 B II / 121.921, since 08.61: M 121 B IX / 121.928 
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 8,5; since 09.59: 8,8 
Crankshaft bearing 3 
Output 105 hp at 5700 /min 
Maximum torque 14,5 mkg at 3200 /min 
No. of valves/configuration 1 intake, 1 exhaust / overhead 
Valve operation top camshaft 
Camshaft drive duplex roller-type chain 
Mixture formation 2 register-downdraught carburetters Solex 44 PHH 
Cooling water cooling / pump; 10 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 / 65 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, since 05.56 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 5 K x 13 
Tyres 6,40-13 Sport 

Skrzynie biegów tego modelu (gearbox and performance):

Type 190 SL (W 121)
Mercedes-Benz type 190 SL Roadster
Gearbox 4-speed gear shift 
Availability Series (1. execution) 
Shifting Control rod car center 
Clutch Single-plate dry clutch 
Type of gearbox Pinion change gear 
Synchromesh gears I - IV 
Gear transmission I. 3,40; II. 2,00; III. 1,29; IV. 1,0; R. 3,29 
Differential ratio 3,70; 3,89 or 3,90 
Maximum speed 170 - 180 km/h 
Accelerations 14,5 s 
Comments Acceleration with shifting through from 0 - 100 km/h; loaded with 2 persons 
Fuel consumption 8,6 l 
acc. to guideline DIN 70030, ascertained at 3/4 of max. speed, maximal 110 km/h, unter Zuschlag von 10 % 
Type 190 SL (W 121)
Mercedes-Benz type 190 SL Roadster
Gearbox 4-speed gear shift 
Availability Series (2. execution) 
Shifting Control rod car center 
Clutch Single-plate dry clutch 
Type of gearbox Pinion change gear 
Synchromesh gears I - IV 
Gear transmission I. 3,52; II. 2,32; III. 1,52; IV. 1,0; R. 3,29 
Differential ratio 3,90 
Maximum speed 170 - 180 km/h 
Accelerations 14,5 s 
Comments Acceleration with shifting through from 0 - 100 km/h; loaded with 2 persons 
Fuel consumption 8,6 l 
acc. to guideline DIN 70030, ascertained at 3/4 of max. speed, maximal 110 km/h, unter Zuschlag von 10 %