A method of altering tensioner face compliance to decrease noise, vibration and harshness of a chain system, the chain system comprising:
- a drive sprocket;
- a driven sprocket;
- a chain engaging the drive sprocket and the driven sprocket, the chain having a slack strand between the driven sprocket and the driving sprocket and a tight strand between the driven sprocket and the driving sprocket, the chain comprising:
- a plurality of links connected by connecting elements, each link of the plurality of links comprising a body defining an aperture for receiving at least one connecting element, at least one tooth and a back surface;
- at least a first tensioner mounted to interact with the slack strand of the chain, the at least first tensioner comprising a tensioner face which contacts the slack strand of the chain through a tensioner face, such that when the tensioner face is applying a force on the back surface of the plurality of the links of the chain, the tensioner face deforms to a compressed state;
- the method comprising:
- receiving chain system characteristics of at least:
- a layout of the chain system, chain system conditions, an initial tensioner face geometry of the at least first tensioner and an applied force of the tensioner face on the chain;
- determining a contact length of the tensioner face with the chain to be less than two pitch lengths of the chain;
- defining a compliance tensioner face geometry requirement of contact length and tensioner face geometry to obtain a compressed state of the tensioner face with a set amount of compliance;
- determining an applied force tensioner face stiffness requirement to obtain the compressed state based on the compliance geometry requirement;
- optimizing the compliance geometry requirement and applied force tensioner face stiffness requirement for the tensioner face geometry;
- and
- applying the optimized compliance geometry requirement and applied force tensioner face stiffness requirement to the tensioner face geometry to produce a tensioner arm.