Lancia Alfa / 12 HP (1908)
|Engine||2544 cc straight-4 28 hp|
|Wheelbase||282 cm (111.0 in)|
|Curb weight||700 kg (1,543 lb)|
- Engine : Type 51 ; front engine, longitudinal, 4- cylinder in-line , bi-block (2 cast iron blocks with 2 cylinders each), bore 90 mm, stroke 100 mm,total displacement 2544.69 cm³ , fixed cylinder head, aluminum alloy base , distribution with parallel side valves (2 valves per cylinder) controlled by aside camshaft (in the crankcase) driven by gears; crankshaft on three supports; compression ratio 4.8: 1,maximum power 28 CVat 1,500 rpm, maximum reachable speed: more than 1,800 rpm; gravity feed ( vertical two-stage Lancia carburettor , preheated by radiator water); high voltage magnet ignition ( Bosch ) with fixed advance value (not manually adjustable); gravity lubrication (auxiliary pump to lubricate the crankshaft supports according to the rotation speed) capacity of the lubrication circuit 12 liters; water cooling with centrifugal pump and honeycomb radiator.
- Transmission : shaft with cardan joints, traction on the rear wheels; multi- plate clutch in oil bath; 4-speed gearbox ( light alloy box) plus reverse with side lever control; gear ratios: 4.219: 1 in first, 2.506: 1 in second, 1.656: 1 in third, direct drive (1: 1) in fourth, 4.219: 1 in reverse final reduction ratio (bevel gears) 3.062: 1 (16/49)
- Suspensions : front with rigid axle and semi-elliptical longitudinal leaf springs, rear with rigid axle with longitudinal leaf springs with 3/4 ellipse
- Brakes : foot brake (mechanical) acting on the transmission and hand brake (mechanical) acting on the rear wheels
- Wheels and tires : wooden wheels (spoked), 810 x 90 tires
- Steering : right-hand drive position; steering screw and wheel.
- Frame : steel , with side members and cross members; wheelbase 282 cm, front track 133 cm rear track 133 cm; length and width of the frame 380 cm and 161.5 cm respectively; weight of the frame, in running order 710 Kg.
- Performance : maximum speed km / h 90 (maximum speed in the various gears: 21 in 1st, 36 in 2nd, 54 in 3rd, 90 in 4th)
- Frame numbering : from n ° 1 to n ° 137; within this numbering are included - in addition to 108 units of the 15 HP-Alfa model - 23 units of the 18/24 HP-Dialfa model , and 5 or 6 units (approximate data) consisting of 15 HP in racing edition