prototype 18 metre JS1 Revelation is a fabulous
looking sailplane, beautifully finished, with
impressive build quality and I was lucky to have the
opportunity to fly it during a recent visit to the
Potchefstroom factory. The cockpit is comfortable,
well laid out and I felt immediately at home as I
settled into it.
Flying fully ballasted and close to 600 kg AUW, I
was impressed by the harmonisation of the controls,
easy handling and docile low speed behaviour.
stall was gentle with a slight and easily
controllable wing drop, recovering immediately on
release of control stick back-pressure.
After an hour of local flying exercises, I was
joined by Uys Jonker flying an 18 metre Ventus 2CT ,
also heavily ballasted, and this gave me a chance to
assess the relative performance of the JS1 during
our subsequent 500 km cross country together.
JS1 soon showed its impressive potential,
consistently pulling away from the Ventus as we
carried out long glides throughout the speed range
in good soaring conditions.
Landing was straightforward with a low
approach speed, the triple paddle airbrakes
providing easy approach control and no
noticeable tendency to drop a wing on the
There is still some detail design work and
aerodynamic fettling to attend to, but basically the
design team have got all the essentials right at the
first attempt. That their first ever prototype
should fly and perform so well is a stunning
achievement. Uys and Attie should be very pleased
Andy Davis [January 2007]
Andy Davis is one of the most experienced
competitors in the world championships. He first
represented the UK at the 1981 World Championships
and has been selected on every occasion since. He
was the Standard Class World Champion in Poland in
2003 and in Sweden in 1993. Andy has had an
amazingly consistent run of results which has seen
him finishing outside the top six in the world
championships on only a couple of occasions.