League of
Silent Flight

The Nostalgia Rules below can be found in the Current AMA Regulations and are reproduced here as a service to the Soaring Community.

• 3.1.7 For Event 461: Nostalgia

• 3.1.7.1. Date of Release

• 3.1.7.1.1. The latest accepted magazine, or book, cover date for the 'published design', or the manufacturer's 'release date' of a kit will be prior to 1/1/80.

• 3.1.7.1.2. If the plan used for construction and documentation was published in a book or magazine, all of the parts of the plane must be scalable and buildable from the plan. The aircraft construction and materials must be detailed, and not just a 3-view. This is especially important for the shape of the airfoil if it is not from a published set of coordinates.

• 3.1.7.1.3. If the ‘kit’ or ‘published design’ had several release dates that include modifications to the original design, only those changes made prior to 1/1/80 will be accepted.

• 3.1.7.1.4. Models that have been kitted, but where there is no date on the plan or on the instructions, an advertisement in a dated magazine or book can be used for dating of the design. • 3.1.7.2. Airframe Requirements; • 3.1.7.2.1. Items That Must Duplicate the Original:

• 3.1.7.2.1.1. The plane must replicate the original styling and appearance and comply with the vision of the Nostalgia event (Vision is stated under Special Items).

• 3.1.7.2.1.2. Airfoil.

• 3.1.7.2.1.3. Plan form, moments and surface areas of all components of the flying surfaces including the flying surfaces.

• 3.1.7.2.1.4. Fuselage form or styling in outlines both in side and plan views as well as cross-sectional shapes.

• 3.1.7.2.1.5. Basic construction materials and techniques such as open-bay wing structure, wood vs. fiber reinforced plastic, etc.

• 3.1.7.2.2. Items That Can Deviate From The Original:

• 3.1.7.2.2.1. Control surfaces:

• 3.1.7.2.2.1.1. If desired on a plane with no glide control capability designed in originally, spoilers may be added to the upper wing surface at, or about, the high point of the airfoil as long as the plans do not call for any other glide control device. If the plans have a glide control system shown, it must be the one used and shall not be deviated from. If spoilers are added, they must be designed to minimize the effect on the styling of the original aircraft. (An example would be on an open structure wing; the spoiler system must be of minimal dimensions including the area around the spoiler bay used to attach the covering).

• 3.1.7.2.2.2. Any interior, non-visible, structural modifications to enable the plane to handle modern launching equipment and techniques. Some examples could be:

• 3.1.7.2.2.2.1. Substitute spruce for balsa

• 3.1.7.2.2.2.2. Carbon fiber reinforcements

• 3.1.7.2.2.2.3. Larger wing joiner rods

• 3.1.7.2.2.2.4. Stronger tow hook systems

• 3.1.7.2.2.2.5. Wing incidence and Decalogue

• 3.1.7.2.2.2.6. Wing mounting (bolt on vs. rubber bands)

• 3.1.7.2.2.2.7. Removable or bolt on stabs rather than permanent stabs as long as the assembled position replicates the original and the visible architecture is unchanged.

• 3.1.7.2.2.2.8. Dihedral (either tips or center or both) can be modified a maximum of +/-25% of the original to suit personal preferred handling characteristics

• 3.1.7.3. Special Items:

• 3.1.7.3.1. Radios can be of any type legal to operate and electronic mixing is allowable on any set of surfaces.

• 3.1.7.3.2. The use of landing arrestor devices is prohibited. This does not eliminate the use of a smooth surface skid to protect the bottom landing- surface of the aircraft from scratches and nicks.

Additional Resources provided By Jack Iafret

An html listing of Kits CLICK HERE !

A text listing of Plans, CLICK HERE !

A Excel Spreadsheet of kits and plans, CLICK HERE !