What is F5D?

What is F5D Pylon Racing?

F5D is an international class ratified by FAI (Fédération Aéronautique Internationale) The World Air Sports Federation. This class involves racing Electric-powered model planes round a 400m triangular course for 10 laps. The model with the fastest time over a Number of heats is the winner. Up to 4 models are flown simultaneously at speeds of around 200 mph. The FAI F5D Rules can be viewed here.

 

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FAI Rules

5.5.6. CLASS F5D - ELECTRIC POWERED PYLON RACING MODEL AIRCRAFT

 

5.5.6.1 General
General Rules 5.5.1. and Contest Rules 5.5.2. are applicable except where otherwise stated.

 

5.5.6.2 Technical Specifications
a) Model Aircraft
Minimum weight ready to fly: 1,000 g
Maximum surface loading 65 g/dm2
b) Battery
Battery Type: Lithium-Polymer
Minimum weight of battery pack: 200 g
Maximum weight of battery pack: 400 g
The weight of battery includes soldering, insulation, cables and connectors.
Number of cells in serial connection: up to 5 (S)
Cells in parallel are not permitted.
Limitation of energy by an electronic limiter that stops the motor: max 1000watt-min.

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F5D - Electric Pylon Racing Explained

F5D rules and Specifications

F5D ELECTRIC POWERED PYLON RACING MODEL AIRCRAFT Download full FAI Rules

Technical Specifications

Minimum weight

1'000 g

Maximum surface loading

65 g/dm2

Type of battery

LiPo

Minimum weight

200g

Maximum weight

400g

Maximum number of cells

5

Energy Limitation

1000Wmin

Each competitor may use a maximum of three model aircrafts during the contest.
Any one model aircraft may not be used by more than one team, nor may roles be interchanged in a team.

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What do you need to race F5D?

The good news you can get started for a lot less than people will tell you. Assuming you already have the radio you are looking at under £700 for a full race kit that you can fly at the next league event and kick all our butts.

Lets break that down and give some advice what is needed.

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Getting Started

There are several elements to putting together 10 good laps in pylon racing, but before you go further I would like to issue a warning;

  1. It’s not anywhere as easy as it looks or sounds
  2. It’s very addictive.

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Additional information