To try and overcome certain problems we are facing these days in regard to batteries, i decided to enlarge the tests we are currently running with Energy Limiting devices.

At the on coming European Championships such a device will be used in official racing by participants. The plan is to show to everyone it 's use, and prove there is no advantage or any disadvantage in using such a device. I do not intend to impose the use, or to force anyone to go that way at all. All i want is to show people there is a valid alternative.

After having used the device at several meetings, both in Belgium as abroad, we think we have come up with the correct number of Energy it takes to finish a heat in most classes. Proof of that number can be provided by me, since we took great care in registering every single time we used the device as an Energy counter with perfectly legal batteries as well. What we have seen this far is that using over capacity, over weight batteries in combination with an Energy Limiting device works!

I  intend to call for a meeting with all Team leaders and Judges after registration  to explain and clarify this idea, the European Championship is this year's best meeting to see the biggest number of people at one meeting, so lets make good use of it and find solutions!





Hi all,

It s been a while, but there are some new developments in regard to limiter use. After extensive search and email conversation with Stefan Merz i ordered several units of his Unilog V2 system. Basicly it is a sort of data logging system, but with the extra feature of a limiter function. With this device it is perfectly possible to set a certain Watt/min limit. At this moment the Unilog is used extensively in both F5B(hotliners) and F5D (pylonracing) flying with great satisfaction.
The airplane guys used to suffer the same problems as we face, short battery life because of high capacity, low C rate batteries. Eversince they started using an energy limiter, things have improved drastically.
In our national competition (Belgium) we will at first determine what level of energy is needed for our classes, and next use proper C rated batteries with higher weight , using the Unilog device set at a Watt/min limit according to the current battery situation to level out the ammount of power that can be used. I am happy to announce that these tests will run at the same time in Belgium as in the Tsjech Republic, where another 2 Unilog devices will be used by Zdenka Dostalova and Miroslav Miletin.
I sincerly believe these tests will prove there is a way of getting rid of the battery ruling as we have it now (weight restricted) and will also show that there is a level playing field for all, with batteries that will last a whole season long!

Expect to hear more from this soon!


I am very sorry to have to announce that there has to be an addition to the 2016 Rulebook. Due to an oversight on my part, i did not notice that in the 2016 Naviga Competition Rules it is stated that the number of participants is to be determined in the Class Rules. Since the number of participants has always been restricted to 5 competitors per class/per country for World Championships, the same will be valid for Continental Championships as well.

The following text wil be added to the 2016 Rulebook fortwith.


Upto 5 participants per country and per class can enter both Continental and World Championships. The reigning Continental or World champion is automaticaly qualified and thus not included for the respective Championsip in the 5 participants.


In the case a reigning  junior Continental or World champion becomes senior at the next Continental or World Championship, he/she has the right to defend his/her title as senior.




Bis zu 5 Teilnehmer pro Mitgliedsland und per Klasse können bei Continental- und Weltmeisterschaften gemeldet werden. Der Titelverteidiger jeder Klasse ist automatisch qualifiziert und dieser zusätzliche Starter ist nicht in den 5 Startern pro Land enthalten, dieser Startplatz kommt hinzu.




Ein Junior der bei der letzten Kontinental oder Weltmeisterschaft den Titel als Junior gewonnen hat kann, wenn er bei der nächsten Veranstaltung das Seniorenalter erreicht hat, seinen Titel bei den Senioren verteidigen. Auch dieser Startplatz des jeweiligen Juniors ist nicht in den 5 Startplätzen pro Land und Klasse enthalten. Dieser Startplatz ist nicht auf eine andere Person übertragbar.




Die Gesammtzahl von 7 Startern in einer Klasse, wenn alle oben genannten Faktoren eintreten  darf nicht überschritten werden.





 My sincere apologies for the oversight


Walter Geens

Naviga M section Leader


The latest version of Naviga Competition Rules (Naviga Wettkampf Regeln) has been added to the "Rules" page.


Moers 2016