Latest News
JS2 Revenant Maiden Flight
Jonker Sailplanes has completed the development of their most advanced glider designed to date – the JS2 Revenant. Uys Jonker, JS’s CEO, had the privilege
JS3: A Nordic Sales Success
There are already four planes flying in the Nordic region. Now JS’ agent, Arne Boye-Moller, can add another seven orders to the list – all with
JS2 STEP BY STEP
The maiden flight of any new product is such an amazing and exciting occasion. Imagine the rewarding feeling if everybody involved can be in the
JS2 LIVE “walk around” – Only 4 hours to go
The JS2 Revenant, a high-performance, versatile, easy-to-fly self launcher! The name Revenant was inspired from the French verb Revenir, meaning “to return”. The JS1-C is
JS2 LIVE “walk around”
Excitement is building as the JS2 Revenant nears completion….The R&D team developed and constructed the prototype in our new state-of-the art R&D facilities. Join us
South African Nationals – Welkom 12-20 December 2020
Despite the threat of Covid, South African and various overseas pilots were keen to compete in our annual national gliding competition. It was not until
JS3 Idaflieg test
The JS design team was thrilled when Idaflieg approached them to test the JS3’s performance during their 2020 Summer camp. Oftentimes, a manufacturer would
Covid-19 Update – Situation in South Africa
Although South Africa (SA) is currently ranked amongst the top in the world regarding Covid-19 active cases, we are very grateful to report that the
JS2 Revenant – Step by Step
Our chief design engineer did not want to give any performance away with the JS2 fuselage. In fact, he designed the fuselage with even less
JS2 Revenant – Step by Step
The advantages CAD modeling brings to the table is a much faster integration time for parts. The time it took from the pylon was carried
JS2 – Out of the Molds
Opening the molds for the first time it is like opening a treasure box. You expect something amazing – the result of years of design
JS2 Progress – Step by Step
This week we saw a giant leap towards the completion of the REVENANT. After many weeks of accurately positioning components in the fuselage, verifying computer
Jannen Kisat / Purjelennon SM 2020
Congratulations to Martti Koivula who reigned as the Fin open class nationals champion flying his JS1 “GOL”. The competition consisted out of 17 Competitors and
Campionato Italiano Classe and Coppa Città di Ferrara 2020
Congratulations to Riccardo Brigliadori for winning both the Coppa Città di Ferrara 2020 and the Campionato Italiano Classe UNICA 2020 in his JS1C -21m! Both
LSG Waterkant-Zetel e.V. – 1st German Club to receive JS3
LSG Waterkant-Zetel e.V. received their JS3, serial number 83, on the 18th of June. They send to us some very uplifting words which we would
JS in SEGELFLIEGEN
The latest issue of the gliding magazine SEGELFLIEGEN has just been dispatched to shops in Germany and Austria. This issue covers the 2020 Helli Lasch
JS3 Rapture Weight and Balance – made easy by LXNAV
For those who missed the link in our latest newsletter, here is a copy of the article… Weight and balance is such a critical flight
Why you should avoid too large winglets – from our Aerodynamic Chief Engineer Johan Bosman
The image shows a flow field around a wing tip without a #winglet. More precisely, it shows the extent of positive inflow angles at the tip