F1G rules are simple:

1. Minimum weight of model aircraft less motor(s) - 70 g (2.46 oz)
2. Maximum weight of motor (s) lubricated - 10 g (0.352 oz)
3. The number of models eligible for entry by each competitor is three.
4. Each competitor is entitled to five official flights.
5. Each competitor is entitled to one official flight in each round of the event. The duration of rounds must be announced in advance and may not be less than 30 minutes or greater than 90 minutes.