Borderel-Cail

The industrial roots of Borderel-Cail lay in the Cail organization, a major French builder of locomotives and heavy machinery whose Denain works had produced railway equipment since the 1840s. In 1905 Société J. F. Cail & Cie. entered passenger-car manufacture using the Borderel-Cail name and designs attributed to engineer F. Gros. The first 15/18 CV was an extraordinary six-wheeled limousine. Its four-cylinder engine sat at the front, the middle pair of wheels formed the driven axle, and both the front and rear wheel pairs steered; the driver's bench was positioned over the centre axle. A higher-powered 25/30 CV version retained this architecture and appeared at the 1906 Paris Salon. In 1907 the company changed direction with the 30 CV, a conventional four-wheeled four-cylinder car also documented as a double phaeton. Automobile manufacture ceased in 1908 while Cail's much broader railway and engineering history continued, so the marque dates describe the road-car program rather than the lifespan of the parent industrial company. Surviving encyclopedic sources provide no production total, engine displacement, bore and stroke, gearbox specifications, chassis dimensions or prices for any of the three types; these remain explicitly unknown. The complete defensible model sequence is therefore 15/18 CV, 25/30 CV and 30 CV. Period references variously reverse the compound to Cail-Borderel or shorten it to Borderel, but those forms describe the same Denain program rather than separate marques. It is unrelated to the earlier Bégot et Cail cars and to Cail-built locomotives or road steam tractors, which remain outside this passenger-car model range.

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