Tipo 26R

The short-lived Grand Prix formula of 1928 permitted a unlimited choice of engine displacement as long as the dry weight of the car was between 550 and 750 kg. Alfieri took the alloy cylinder block of the 2.0-litre Tipo 26B and fitted shorter connecting rods with roller bearings, hence the R designation, arriving at 1.7 litres and 140 bhp. Inspiration came from a Bugatti Type 35 that Bartolomeo Costantini had parked in the Maserati workshop overnight; while Alfieri took its owner to the cafés and bars of Bologna, Ernesto Maserati with his mechanics dismantled the French engine ...

The Tipo 26R was equipped with a narrow frame with a short 2.58 metres wheelbase and the engine was mounted offset to the left by 1 cm. Two body styles were tried, either with profiled tail or with Kamm-style tail. Dry weight of 720 kg - 380 kg on the front axle, 340 kg at the rear. Weight of the engine alone was 178 kg, plus 46 kg for the 3-speed gearbox. Top speed 200 kph (124 mph).

Two Tipo 26Rs were made: one as an experimental works car and a second one for Count Aymo Maggi of Milan. Both raced in the Italian Grand Prix at Monza in September 1928 where it turned out that the cars (which finished 5th and 6th) were the only entrants in regulation with the weight requirements ...

Technical data

0-60 mph
Bodyworkaluminium-bodied two-seater racing car
Bore and stroke62x70 mm
Brakesdrum brakes, mechanical
Brakes front
Brakes rear
Chassisladder frame, with two longitudinal steel girders and cross members
Compression ratio5.5:1
Cooling systemwater-cooled, centrifugal pump
Displacements (unitary)
Dry weight1,587 lbs (720 kg)
Enginein-line 8
Engine weight
First race
Front Tyres
Front suspensionleaf springs and friction dampers
Front track
Fuel & lubricant
Fuel feedtwo Roots superchargers, a single Memini Super carburettor (Weber from 1929) mounted ahead of the superchargers
Fuel tank17.60 Imp. gall.( 80 litres)
Gear ratios
Height49.21 in. (1,250 mm)
Ignitionsingle-plug, Bosch magneto
Kerb weight
Length144.48 in. (3,670 mm)
Length-Width-Height
Lubricationdual oil pumps (pressure and scavenge)
Maximum power140 bhp at 6,500 rpm
Maximum torque
ModelTipo 26R
One mile
Production dates1928
Production start1928
Quarter mile
Rear Tyres
Rear suspensionleaf springs and friction dampers
Rear track
Reduction
Steeringworm gear
Timing geartwo valves per cylinder set in a 90°V, twin overhead camshafts
Top speed124 mph (200 km/h)
Total displacement1,690.7 cc
Transmission3-speed + reverse
Tyresfront 5.00x18; rear 5.50x18; Dunlop
Weight distribution
Wheelbase101.57 in. (2,580 mm)
Wheelswire wheels, front 3.00x18, rear 3.50x18
Width59.05 in. (1,500 mm)