[vector1]

factory aluminum bell is 7#, they are almost free. quartermaster makes a single disc 8.5 clutch for a 157 tooth flywheel which is 13" dia., I'm using a metal disc and the whole assy weighs 18#. Have another similar setup except different maker and using organic disc, don't like this one, too grabby, will be changing it out. Metalic lasts longer anyway.