Pobjoy Niagara Engine
Pictures of the Pobjoy Niagara engine under restoration One of two engines that the Short Scion our current project had. Unfortunately we do not have an entire engine but what we have has been cleaned and restored to a very high standard. Should anyone know of a Pobjoy lurking anywhere please contact MAPSl
Possibly the only aircraft flying today with a Pobjoy engine is the Comper Swift. Designed by Douglas R Pobjoy, it was whilst at the RAF college at Cranwell that he was asked to design a small and efficient seven-cylinder radial engine of 67hp. Building a prototype engine in his workshop at Minster-on-Sea on the Isle of Sheppey, he allowed it to run for120 hours before submitting it to the Air Ministry for a further 50 hour test. Passing all its tests, a small factory was set up at Hooton Park, Cheshire in 1930 and production of the Pobjoy ‘R’ began.
In 1932 Short Brothers had plans to build a twin engine high wing monoplane to carry five people. Known as the Short Scion, it was to be powered by two Pobjoy engines of a later mark and known as the Pobjoy Niagara III which gave an increased power to 90hp.
Today the workshop of MAPS has one of the last remaining examples of this engine. Currently undergoing refurbishment for display purposes, this batch of photographs taken by MAPS board member, John Knowles, show the rebuild from its arrival when it was unrecognisable as an engine to the current state. It is intended to use this rebuild as a pattern for manufacturing a dummy Pobjoy engine which upon completion will form part of the display of the Short Scion aircraft currently being restored to static condition in the workshop.
Robin J Brooks. PR Director MAPS