AMA Plans Service Showcase
IceBox 25
Overview
Many splendid F1G Coupe d’Hiver models were produced in the 1970s—including the IceBox 25—and that tradition continued into the 1990s. John Oldenkamp introduced readers to this contest winner, with a few up-to-date twists to modernize it.
Construction and materials
John used carbon fiber to reduce the size and number of components, while a “stinger” fuselage and refined airfoils reduced drag. Polyspan (by Starline International) covered the top of the model, giving it a current look, and Mylar was used on the bottom of the wings in an attempt to keep the surface as smooth as possible for optimum airfoil performance.
Combining the two coverings also ensured that the finish would be strong against punctures.
John noted that the IceBox 25 was an easy build—but not for a newcomer unfamiliar with the Coupe d’Hiver class, because of the accuracy it demands.
Specifications
- Wingspan: 37.2 inches
- Minimum weight: 80 grams (final assembly)
- Motor: 12-strand, 10-gram motor with a Crockett hook-up at the front
Performance
According to John, the model flew best in full sun with a light breeze to cruise thermals, and it was better suited as a top competition machine. He was pleased with the design overall and looked forward to using it to outfly his opponents.
Notes and availability
The IceBox 25 construction article was featured in the November 1997 Model Aviation (MA). Members can access it through the magazine digital archives on the Academy’s website.
The plans set is AMA Plans Service listing 843, available for $5 plus shipping and handling. See page 167 of the issue or visit www.modelaircraft.org/plans.aspx for ordering information.
Transcribed from original scans by AI. Minor OCR errors may remain.
