The original RV-4 engine is produced by Van's Aircraft as a self-assembly kit. The model of the RV4 is now available on a scale of 1:3.3 from Grupp Modellbau. Grupp Modellbau has brought this low-wing model into production with a 93.7" (2.4 m) wingspan and a possible take-off weight of 27 lbs.
High quality kit components covered in Oracover
The fuselage, the tail unit and the wings are CNC cut balsa / plywood