Measure the length of all lines by laser

A gradual loss of trim often goes unnoticed, but restoring a glider to specification can be quite dramatic. Both Kevlar and Dyneema lines change in length over time, particularly if they get damp or exposed to heat. Being out of trim can affect both safety and performance. Minor variations outside the ±10mm tolerance can make a glider harder to launch, handle poorly, fly more slowly and lose height more quickly on glide. Greater deviation from specification can increase the likelihood of a collapse, stall or spin. Corrections are made by taking various different loops at the maillon or in the upper cascade to shorten individual lines and bring the glider back into trim without the expense of making new lines. This can refresh the handling and performance of a wing to the way it was when the glider was new.