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1921 Bugatti Type 28 Torpedo Concept

Bugatti Type 28 Torpedo Concept

1921 Bugatti Type 28 Torpedo Concept

In 1921 the first Bugatti-designed, 8-cylinder went on display at the Paris Motor Show as the Type 28. Bugatti played a major role in the movement towards straight-eight powerplants. From 1913 on, Bugatti developed experimental eight-cylinder engines for both road cars and aeroplanes.

The engine itself was made up of two four-cylinder blocks sharing the same crankcase. This setup was used right up to the Type 50 and Type 57 Bugattis.

Sadly, the Type 28 never made it beyond the prototype phase. But, it offered many original design features that carried onto later models including the Type 30.

Having an abundance of power, Bugatti added brakes on all four corners. This must be one of the first instances brakes were added to all the wheels of a Bugatti.

The two-spoke steering wheel featured an adjustable length mechanism. Additionally, throttle and carburetor adjustments could be made by controls featured just beyond the wheel. Such adjustments were later used on the Type 41 Royale. Another feature also adopted for the Royales was the use of a rear mounted gearbox.


1921 Bugatti Type 28 Torpedo Concept 1921 Bugatti Type 28 Torpedo Concept

Specs & Performance

engine Inline-8
position Front Longitudinal
aspiration Natural
valvetrain 3 Valves per Cyl
displacement 2995 cc / 182.8 in³
bore 69 mm / 2.72 in
stroke 100 mm / 3.94 in
power 67.1 kw / 90 bhp @ 3400 rpm
specific output 30.05 bhp per litre
body / frame Light Pressed Steel w/Hardwood Filling
driven wheels RWD
front brakes Drums
f brake size mm / in
rear brakes Drums
r brake size mm / in
f suspension Solid Axle w/Half-Elliptic Leaf Springs
r suspension Rigid Axle w/Reversed Quarter-Elliptic Leaf Springs
wheelbase 2600 mm / 102.4 in
transmission Rear Mounted 2-Speed Manual
gear ratios :1
top speed ~130.4 kph / 81.0 mph