| Chain 415 that used in racing, with original specification of chain: plate thickness 1.5mm, material steel 50C and total chain weight 870 grams per 130 links, can be improved to support its performance. In this thesis, a new design will be discussed to reduce weight of 415 chain. Weight savings of components, obtained from thickness plate reduction 20% and its pin height reduction. The thinner plate received more stress, therefore the new plate properties must be made better with more strength. With same material steel 50C, the new plate design heat treatment processed is improved from Heat Quench Temper to Austemper. From the experimental testing of the resulting prototypes, the required minimum tensile strengths are met and finite element simulations are also performed to see the level of safety. Weight saving achieved is around 5-12%. |