Rule Changes for 2026

Please note all changes for 2026 are indicated in the Rule Book by a black bar down the right-hand side of the word, sentence, or paragraphs where they occur.
Synopsis of 2026 Scale Rule Changes

6.1 General Scale Rules.
6.1.1.12 Wing loading details no longer required.
6.1.1.14 BMFA General Rule 1.2.3.1 Exhaust muffler exemption for FF scale models.
6.1.1.22 EMSDs (gyros) Clarification.
6.1.2 Static Judging
6.1.2.3 (ii) Scale drawing clarification.
6.1.2.3 (d) Proof of texture for FF and Indoor RC models
6.3.3 RC3 Amendments to Builder and ARF models.
RCX indoor RC model Classes.
Removal of penalty for EMSDs (gyros)
6.3.6.2 RCX3 Eligible Models clarifications.
6.3.6.4 RCX3 Documentation clarification.
6.3.6.5 RCX3 Workmanship amendment.
6.3.6.6 RCX3 Static Penalties clarification.
6.4 Scale Free Flight
6.4.1.1 Single Judge allowance.
6.4.1.2 Radio Control in FF classes clarification.
6.4.1.6 Flight bonus clarification.
6.4.1.11 Inclusion of Gliders in Outdoor Free Flight.
6.4.2.2 FF1 Superscale. Electric motor maximum limit change.
6.4.6.3 FF3 Scale Free Flight. Electric motor maximum limit change.
6.4.6.9 FF5 Assisted Scale Free Flight. Flight scoring clarification.

6.4.10 FFX4 Kit Scale
6.4.10.1 FFX4 Permitted modifications clarification.
6.4.10.3 FFX4 Full size plan required.
6.4.10.4 FFX4 Static judging changes.
6.4.10.5 FFX4 Static penalties clarification.

Scale Duration Classes
6.4.11.4 FFX5 Peanut. Amendments to static scoring.
6.4.11.5 FFX5 Peanut. Flight Scoring clarifications.
6.4.12.4 FFX6 Pistachio. Amendments to static scoring.
6.4.12.5 FFX5 Pistachio. ROG reinstated.

Air Race Class
6.4.15 FFX9 New Class
Scoring
Several classes in this Rule Book have scoring clarifications.
Annex 6B
Annual Scale Trophies. BMFA and STC Trophy designation changes.
Annex 6C
Drawing Validation. Description of procedure and requirements for this service.