The more powerful 180 hp Hispano Suiza 8Ab was the natural progression of the earlier 150hp, and a little later, the 200 hp Hispano Suiza 8Ba, with increased engine speed and a reduction gear. Some structural failings which were evident in earlier versions of the engine were remedied, and in 1917 the new engines were fitted to the RAF SE 5a, the best British fighter of WWI. The French Air Force also soon received a new fighter with this engine: the SPAD XIII which replaced the largely obsolete SPAD S.VII.

The Hispano Suiza became the most numerous and widely used water-cooled engine of WWI. There were more than 40,000 units produced in total, in Great Britain, France, Spain, Russia and the United States of America.

The kit sparkplugs are molded to the cylinder blacks and are easily damaged, be cautious here.

It should be noted that the real test blocks for these motors was very substantial wood block and metal tie down strapping with bolts. The framing supplied in the kit represent maintenance supports to work on the motor during overhauls. The motor would never be run up with it in these types of cradles / frames.

While I applaud Roden for their attempt at providing PE, I wish it were more extensive. But that is a personal view. Also their website box image has the 625 & 622 switched. Note the correct images at right here.

Please remember, when contacting retailers or manufacturers, to mention that you saw their products highlighted here - on AEROSCALE.