cylinder block, that again consisted of five smaller rubber cylinders separated by steel discs. These cylinders also served as shock dampers, avoiding the problems caused by the oil dampers used with the AMR 33. The wheels in the front and back were independently sprung, again by a rubber cylinder block, but now consisted of four smaller cylinders. The sprocket was in the front. The track was 22 centimetres wide and was supported by four top rollers. The wading capability was sixty centimetres, the trench crossing-capability 1,7 metres and a vertical obstacle of fifty centimetres or slope of 50% could be climbed. The Renault 447 22 CV four-cylinder 5881 cc petrol engine rendered, according to the official French Army manual, a maximum speed of 55 km/h, making it the fastest French tank of its day. Renault brochures claimed the higher speed of 60 km/h and many sources mention the latter number. It had a peak output of 82 hp at 2200 r/m. The average road speed was 40 km/h. The brakes were of the single dry plate type and a Cleveland differential was used. There were four forward gears and one in reverse. There was a Zénith carburettor and a Scintilla Vertex magneto, making it possible to start electrically even at temperatures below zero. A fuel tank of 130 litres gave it a range of two hundred kilometres. Production The original order envisaged a first delivery of ten vehicles in December 1934 and a completion in March 1935. This last date was soon postponed to August 1935, but that month production had hardly started yet due to great financial problems with Renault. In June 1935 Renault even refused a second order of fifty, fearing the contractual fines the inevitable delays would cause. However, on 20 April 1936 he accepted an additional order for thirty vehicles, to be delivered before 15 December 1936. Of these, fifteen would be of the 7.5 mm machine-gun version, five of the ADF 1 and five each of two tank destroyer types, the ZT 2 and ZT 3. On 9 October 1936 a third and final contract was signed of seventy vehicles: sixty of the 7.5 mm machine-gun version, half of these without a radio set; and five each of the ZT 2 and ZT 3, with a final delivery before 7 August 1937. The onset of production was also slowed by coordination problems with the subcontractors: