|Type||Motor Rail Simplex|
|Built by||Motor Rail|
|Length||12 ft 5 in|
Simplex 435 is a First World War 40hp "Simplex" owned, restored and operated at FR50 by Mike Hart.
The locomotive is Motor Rail "Open" design LR 2156 (Builder's number 435 of 1917). It was rebuilt in 2ft 6ins gauge by its makers as 3663 of 1924 for service in the sugar industry on the West Indian island of St Kitts. Repatriated to England, it was regauged and refurbished with a diesel engine, remaining on the FR following the FR50 celebrations in 2005.
LR 2156 left Minffordd on a lorry on 12 March 2008 with what was thought to be a damaged cylinder liner or piston, and moved to Rowsley near Matlock for repairs. It was expected to return to the FR later in the year after an appearance at the Peak Railway War Time Gala Weekend.
The loco eventually returned to Boston Lodge in December 2010 for further repairs to be undertaken. It has since become a permanent resident and is listed as a passenger locomotive in the FR rule book.