Open to any scale model built from a commercial kit that meets the following general characteristics:
Maximum weight: 150 g
Maximum wing loading: 15 g/dm2
Motive Power: rubber, CO2 or electric
No declaration as to compliance is required from the competitor but the judges reserve the right to weigh and exclude any model they suspect of being overweight. Models may be built from kit parts or the builder’s own wood but the kit plan must be provided as authentication. The only modifications permitted from the original kit are those associated with fitting an alternative power source, a replacement propeller (including for rubber) and wheels.
The minimum documentation required is the original (or photocopy) plan from which the model was built and one photograph, drawing or painting (eg box art) of either the aircraft modelled or a similar aircraft from the same era to authenticate the general colour scheme and markings.
Points will be awarded up to the maximum of 100 to reflect the quality of workmanship and character of the models as follows:
a. Workmanship (finesse, accuracy to plan, warps, neatness of covering etc): (60%)
b. Authenticity of Colour Scheme & Accuracy of Markings (if present): (20%)
c. Overall Character: (20%)
It is expected that most models will have a coloured tissue finish with painted, printed, transfer or tissue markings. Fully painted models will not be excluded but will have 5 marks deducted from their static score. 5 marks will also be deducted for each significant deviation from the original design other than those permitted above. (Typical deductions include: increased dihedral, separate control surfaces where these are not shown on the plan etc)
An official flight shall be recorded when the model has been airborne for 10 seconds.
Each competitor shall have the opportunity to make a minimum of 4 flights.
A minimum period of 15 minutes shall be allocated for trimming before the competition begins. Thereafter, each competitor shall be called five minutes before he/she is required to occupy the starting area. The model shall be released, after confirming that the flight judges are ready, within a period of 3 minutes, plus one minute for each additional motor. Failure to comply will result in the loss of the flight. Only one release is permitted during the allocated time.
Each phase of the flight will be awarded marks between 0 and 10 by each judge during
the flight as follows:
(a) Take-off (Optional, see 6.1.6.(a)): K = 1
(b) Initial Climb: K = 1
(c) Descent and Landing Approach: K = 1
(d) Quality of Landing: K = 1
(e) Realism in Flight (speed, ‘sit’, stability and character): K = 2
The flight score will be the aggregate of the 2 highest scores awarded by each of 2 judges. If only one flight judge is available, the flight scores will be doubled.
The total score will be the aggregate of the static mark and flight score (Maximum 340). In the event of a tie, the model with the higher flight score will take the higher place.
See Annex 6g – Judges’ Guide to Kit Scale