While enjoying my daily visit to abpic I came across this interesting pic. Any ideas what these mysterious objects are that are attached to the Auster? https://abpic.co.uk/pictures/view/1604728
"Unsure of the location and exact date, but in the early fifties the aircraft was fitted with Saunders Roe hydro-skis *, I am unsure what is under the centre of the aircraft, maybe a buoyancy aid. The aircraft was tested taking off from mud flats at Ryde Isle of Wight. On 28 August 1966 the aircraft had a fatal crash during a pleasure flight."
* Highlighting is mine.
So it would appear that it is fitted with an experimental ski/float system.
The big bulbous thingies had me confused. I wasn't sure if they were part of the ski system. I found this a short time ago... "During early low-speed trials on water, buoyancy-tanks were fitted under the wing-tips as a precautionary measure, but were soon removed."
So I can only assume the thingies attached to the skies were more buoyancy-tanks.
Looking at the photo it would appear that buoyancy tanks had indeed been added to snow skis which would also tie in with the name 'hydro-ski', a ski that works on water. Floats on the wings are a common addition for water birds but they are usually sleeker than these!