Images courtesy of the Westbury family
|Prof Chaddocks' turbine||Variation on the open wheel turbine|
Steam turbines have fascinated experimental engineers for years with numerous attempts to produce an effective version for a boat. The simple, single wheel reaction or impulse type can produce very high speeds but with little power and extremely wasteful on steam. High reduction gearboxes are also required, sapping even more of the limited power.
|Supercharged split single from Kings Lynn||George Chapman's motor from 'Wishbone'|
Numerous attempts were made to supercharge racing engines, both four stroke and two strokes. King's Lynn members produced four quite different examples, The four stroke V twin below right, the split single, above left, and two two stroke twins. Below left is Basil Miles' 'Barracuda motor. Sadly, none of these were that effective, but the Miles and Stalham motors are still in existence.
|Basil Miles' supercharged OHC twin||Bert Stalham's supercharged twin|
A vital part of engine development is to know if improvements have been made, either by trial and error at the track or pondside or more scientifically with a dyno. Engine tests also relied on Dyno readings or standard props to give comparative power readings. Westbury's dyno was found amongst his collection and featured in Pitbox in 2015.
|Delmo on Edgar Westbury's Dyno||Sharp type motor on test|
|Andrew Rankine's 'pumper' set up for dyno testing||Unknown hydro motor|
Engine builders are great experimenters, trying to incorporate and full sized developments into their own motors, from the first use of two controlled valves through to overhead valves, overhead cams and then exotic gear like the rotary valve below.
|Aspin rotary valve motor||OHC four stroke hydro motor|
|Alan Rayman high speed steam engine||Prof Chaddock's flash steam plant for a 24" Westbury Hydro|