It's powered courtesy of a naturally aspirated engine of 3.2 litre capacity. This unit features side valve valve gear, 4 cylinder layout, and 2 valves per cylinder. It produces 36 bhp (36.5 PS/26.8 kW) of power at 1800 rpm.
The power is supplied to the wheels via a 3 speed manual transmission.
The Birch Super Four weighs a claimed 998 kg at the kerb.
Full specs
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| Carrosserie | |||
|---|---|---|---|
| Carrosserie | |||
| Nombre de portes | |||
| Designer | |||
| Dimensions et poids | |||
| Empattement | 2921 | 115 | |
| Voies AV | |||
| Voies AR | |||
| Longueur | |||
| Largeur | |||
| Hauteur | |||
| Garde au sol | |||
| Poids avec pleins | 998 kg | 2200 | |
| Répartition poids AV | |||
| Réservoir à essence | |||
| Caractéristiques aérodynamique | |||
| Coefficient de pénétration | |||
| maître-couple | |||
| SCx | |||
| naturally aspirated petrol | |||
| Constructeur du moteur | Lycoming | ||
| Type moteur | |||
| Cylinders | Straight 4 | ||
| Cylindrée | 3.2 litre 3153 cc (192.408 cu in) |
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| Alésage × Course | 88.9 × 127 mm
3.5 × 5 in |
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| Rapport alésage / course | 0.7 | ||
| Distribution | side valve (SV)
2 Soupapes par cylindre 8 Total vannes |
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| Puissance maximale | 36.5 PS (36 bhp) (26.8 kW) à 1800 tr/mn |
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| Couple maximale | |||
| Specific output | 8.5 kW/litre 11.6 ps/litre 11.4 bhp/litre 0.19 bhp/cu in |
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| Construction | |||
| Lubrification | Carter humide | ||
| Taux de compression | |||
| Carburant | 1 Zenith carburettor | ||
| bmep (brake mean effective pressure) | |||
| Régime maximal | |||
| Nombre de paliers de vilebrequin | 2 | ||
| Refroidissement | Water | ||
| Cylindrée Unitaire | 788.25 cc | ||
| Aspiration | Normal | ||
| Compressor | N/A | ||
| Intercooler | None | ||
| Catalyseur | N | ||
| Performances | |||
| 0-80km/h | |||
| 0-60mph | |||
| 0-100km/h | |||
| 0-160km/h | |||
| 0-400m | |||
| 0-1000m | |||
| Vitesse | |||
| Power-to-weight ratio | Higher is better 36.57 PS/tonne (1000 kg) 0.04 PS/kg 26.9 kW/tonne (1000 kg) 0.03 kW/kg 36.07 bhp/tonne (1000 kg) 0.04 bhp/kg 0.02 bhp/lb |
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| Weight-to-power ratio | Lower is better 37.18 kg/kW 62.1 lb/bhp |
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| Consommation | |||
| Consommation | |||
| universal fuel consumption (calculated from the above) | |||
| litres/100km | |||
| km/litre | |||
| UK MPG | |||
| US MPG | |||
| Emissions de CO₂ | |||
| Carfolio Calculated CO2 ? | |||
| VED band (UK) | |||
| CO2 Effizienz (DE) | |||
| Châssis | |||
| Emplacement de moteur | front | ||
| Engine layout | longitudinal | ||
| Traction | rear wheel drive | ||
| Répartition du couple | N/A | ||
| Direction | |||
| turns lock-to-lock | |||
| Turning circle | |||
| Suspension AV | |||
| Suspension AR | |||
| Roues AV | |||
| Roues AR | |||
| Pneumatiques AV | 32 x 3½ | ||
| Pneumatiques AR | 32 x 3½ | ||
| Freins AV/AR | |||
| Diamètre des freins AV | |||
| Diamètre des freins AR | |||
| Braked area | |||
| Transmission | 3 speed manual | ||
| Rapport de démultiplication supérieure | 1 | ||
| Rapport de pont | 4.25 | ||
| Généralités | |||
| Carfolio.com ID | 207647 | ||
| Production total | |||
| Type mines | |||
| RAC rating | 19.6 | ||
| Insurance classification | No information available | ||
| Tax band | No information available | ||
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1919 Birch Super Four added 2010-02-18. Last modified 2013-02-28. |
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