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Official BMW Club

Official BMW Club

Official BMW Club

Specifications

BMW “Wartburg” (Da 3)

Date of manufacture

1930 – 1931

Bodywork type(s)

Sports

Engine

Type Inline 4 cylinder

Capacity 748cc

Bore x stroke 56mm x 76mm

Power 18bhp @3500rpm

Compression 7.0:1

Carburettors 1, Solex 26 mm updraught

Valve design Side valve

Valve gear Camshaft drive with spur gear wheels

Electrics 6 volt

Transmission

Clutch Dry single disc

Gearbox ratios 1st                   3.25:1

2nd                  1.82:1

3rd                   1.00:1

Axle ratio 5.35 or 4.90

Synchromesh None

Chassis

Frame “A” shaped frame with ‘U’ section side members, friction dampers

Suspension Front: Dropped beam axle & 1 transverse leaf spring, friction dampers

Rear: Quarter outrigger leaf springs

Steering Worm

Brakes Four wheel cable

Handbrake: cable to front wheels

Dimensions

Wheelbase 1905mm

Track front/rear 1000mm/1030mm

Length/width 3150mm x 1150mm

Tyres 26 x 3.5in

General

Fuel capacity 20 litres

Max speed 59 mph

Number produced 150

Club Mailing Address

BMW Historic Motor Club
Lower Norgrove,
Yarrington Road,
Alfrick,
Worcestershire.
WR6 5EX

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