RCD idler plate assemblies provide the most stable mounting platform for the idler pulley. The idler plates are machine from 3/4" thick aluminum plate. Several assemblies are offered with an additional outboard support made from 1/2" aluminum plate for added rigidity. A 3/4" diameter steel or titanium threaded shaft is mounted to a sliding “T” nut to attach the idler pulley. Assemblies are also offered with provisions to attach additional magneto drive or blower snout support hardware.