The new RC 3230 crankset is designed to meet the high standards of track bike race. Light weight, high stiffness and high efficiency are the engineering goals.
Material selection is not only about meeting the strength requirements, fatigue performance must also be considered.
FEA (Finite Element Analysis) originated in the aerospace industry.
Using FEA, (Finite Element Analysis) which traces it’s origins to the aerospace industry,
the Rinpoch engineering team have found that the high stress areas of the cranks arms are located in the outer surface and the side of the inside surface.
Based on this conclusion, Rinpoch designed crank arms limit the weight of the crank arms in an effective way.
FEA technology is also used when designing the spider and chainring making the whole crankset both light and stiff.
More here