As for the original. Lucas ATD use in serious racing there is little sense in using it , too fragile to stand really severe use at high revs . A case of the idea being good but the equipment not being up to the demands . Similarly the std production armature with its two piece pressed together drive shaft and end plate , this recently failed us in our twin Lola . The pure racing armature has a one piece drive end and end plate , instead being integral . The competition magneto employs manual advance with slack wire advance as does Lola .
What will work for a huge mileage on the street will often dissapoint on the track . Horses for courses . Sid .
What will work for a huge mileage on the street will often dissapoint on the track . Horses for courses . Sid .