Abstract: A transmission is provided comprising: a first pulley assembly rotatable about a first axis; a second pulley assembly rotatable about a second axis; an endless member coupling the first pulley assembly and the second pulley assembly; an idler pulley engaging the endless member and rotatable about an idler axis, the idler pulley being movable between a first position and a second position; a tensioner assembly coupled to the idler pulley, configured to control tension in the endless member and comprising: a tensioner spring having a spring axis and biasing the idler pulley towards the second position; and a tensioner arm rotatable about a tensioner axis and coupling the tensioner spring to the idler pulley, the tensioner arm defining a spring linkage extending between the tensioner axis and a spring coupling point, wherein a spring angle is defined between the spring axis and the spring linkage.