As seen in "Pilot" magazine, Will Hosie is trying to raise funds to build a replica of the Supermarine S5, Will is the son of Bill Hosie who bought the first replica (built after it was damaged due to engine failure on takeoff) the aircraft was repaired but sadly was lost, taking Bill's life, in 1987 when the rudder fluttered..(This was basically the only part not rebuilt after the engine failure crash) The AAIB report noted different factors leading to the flutter, humidity in the structure, smaller amount than expected of glue joining the ribs/spar and probably most pertinent the CG of the control surface was 29% cord behind the hinge line which should have been max 15%, to my knowledge, static balancing was introduced on the S6 and was not there on the original S5 either. I'm sure this will be picked up in the next replica.
The first replica was 1/2 the weight of the original, the second replica will be powered by a continental 200hp engine. The first replica was visually identical to the original S5 but lost of modifications were made to make it safer, larger floats, same size on both sides, more foregiving wing profile, slightly wider cockpit etc.. Bill said the replica was like a 152 on floats
more info here : http://www.supermarineseaplane.com
Let's hope Will sees his project through..