About
What is F1B?
Key features of class F1B - what makes it distinctive, who it's for, and what to expect.
Class characteristics
- A classic among FAI classes
- Needs practice with winding rubber
- Lots of trimming
Equipment
What you need
Starter equipment list for the F1B class. Pick specific products based on your budget and experience level.
- F1B model (wingspan approx. 1100 mm)
- Modelling rubber (e.g. Tan Super Sport)
- Rubber winder
- DT timer and propeller bunt mechanism
Rules
Rules and regulations
FAI class. Power exclusively from wound rubber, minimum rubber mass 30 g.
Key rule parameters
- Rubber mass
- 30 g
- Wingspan
- approx. 1100 mm
- Power
- modelling rubber
- Control
- None in flight
First steps
How to start with F1B
- 1
Lubricate the rubber with modelling silicone.
- 2
Wind gradually, tracking the turn count.
- 3
Make test launches with fewer turns first.
Common mistakes
What to avoid on your first attempts with class F1B.
- Over-winding the rubber
- Poor lubrication
- Not controlling torque
Calendar
Related competitions
Knowledge
Related guides
Technique
How to balance a model?
The center of gravity determines flight stability.
Getting started
Essential tools for a modeller
A starter list for your workshop.
Competitions
How to prepare a model for a competition?
A pre-launch checklist.
Getting started
Most common beginner mistakes
What to avoid when starting out.
Tools
Interactive tools for this class
Workshop helpers, with educational estimates, not certified values.
Discipline: Free Flight