The Scale Rule Book is available on the SAMAA web site at
The SAMAA Scale Rules consist of a logical system of three classes based on the International FAI Scale Rules, which are structured in such a manner that the novice scale modeller may progress from one level to the next by developing his building and finishing skills whilst perfecting his flying skills during this progression. The flying section of all three classes is exactly the same as the FAI Rules in order to make transition from one class to the next as painless as possible on the flying side.
The entry level class is Sport Scale which is a flying only class.
The next level of scale competition is Stand-off-Scale which consists of a Static and Flying section, where the static criteria are less severe than in the international class and the weighting of static to flying is 1:2 in the scoring system.
The highest level of scale competiton is the International Class F4C with more stringent static criteria and a weighting of static to flying of 1:1 in the scoring system.
In order to make entry into scale competition as painless as possible and also keep pilots used to flying under competition conditions, NASA has developed the Series Scale concept which consists of a series of five bi-mothly flying -only contests which are held on a provincial basis, culminating in the Scale Masters which is a national event.
Note that the 2011 Scale Rule Book will remain in force until the 2013 Scale Rule Book is published in early 2013.