Flex Testing


Nordic Ultratune uses a "Digital Force Flex Press" to collect ski flex data. This flex press allows us to progressively apply pressure to the ski and measure camber length and camber height.

The Classic Ski Flex Analysis

The CSFA measures camber length and camber height with pressure applied 8 cm behind the balance point (approximating pressure at the ball of the foot) of the ski. Both skis are tested. In addition, if wax markings are needed, half-weight pocket measurements are made with pressure applied at 15 cm behind the balance point (approximating mid-foot pressure). Wax pocket marks are made at 0.1 mm, 0.3 mm, and 0.5 mm camber heights, for powder, warm hardwax, and klister.

The resulting graphs show the flex characteristics of the skis, how well they're matched, and whether they'll be appropriate for powder, hardwax, or klister. The flex analysis report can be used to characterize a pair of skis that you already own and love, identify skis that are too soft or too stiff for you, or simply help marking the correct wax pocket.

The Skate Ski Flex Analysis

The SSFA measures camber length and camber height with pressure applied 8 cm behind the balance point (approximating pressure at the ball of the foot) of the ski. Both skis are tested.

The resulting graphs show the flex characteristics of the skis, and how well they're matched. The flex analysis report can be used to characterize a pair of skis that you already own and hope to match with another pair, identify skis that are too soft or too stiff for you, or help you find the right pair for hard-track or soft-track conditions.

Note that Rossignol, Madshus, Fischer, and Atomic each have slightly different camber profiles, and each company has different recommendations for fitting skate skis. Nordic Ultratune can help you with fitting skate skis to the manufacturer's recommendation.