The British Wolseley Viper engine was developed during WW1 from the Hispano - Suize 8Ab aero engine..
The SE5 fighter aircraft was designed to use the Hispano - Suize 8Ab engine but once in production it was found to be unreliable and often failed in flight.
Wolseley had a license to build the Hispano - Suize engines , which they did and called it the Adder, it only differed from the 8Ab by having higher compression, but it still did not solve the SE5 problems.
The Wolseley engineers then completely redeveloped the Adder/8Ab engine. This engine looked like its predecessor, however it was more powerful and much more reliable becoming the most successful water cooled engine of its time and consequently making the SE5a the excellent fighter that it was.
The kit has 2 sprue sheets ,1 PE sheet and a display stand base with the instructions in the usual Roden format, except that the writing is very small.
This is the first group build I have done, so if you see me doing something wrong please shout out.
3 attached images. Click to enlarge.