Most KR have an infinit life span. As already stated it depends on the state of maintenance. I have stored my KR in the hanger and outside. The snow and ice from being stored outside in the heart of Michigan winter did more damage in one season then all the bad landing and other life span shortening mishaps. Builders and rebuilders seem better equipted to keep the KR going. The most damaged KR seem to be from extreme hanger rash.
Good glue joints will last forever. Damaged wood can be replaced. I stored outside for 5 or so years a boat stage KR belonging to a friend. In all that time it suffered no ill effects. I have no Idea what effects continual sunshine like being in Navada or other dry sunny places might have. N4DD was one of the first KR's and it's like the energizer bunny. Orma L. Robbins N110LR 1984 to present
