12 volt windings give better low RPM charging compared to re-regulated 6 volt items.
Lucas E3LM, 12 volt dynamo overhaul kit, offers saving over buying parts separately. UK made on original Lucas tooling. Suitable for dynamo p/n 20034 (CW) & 20033 (ACW) & 20013A, E3LM, MO1L dynamo. Check your armature – Parallel shaft, two keyways, 179mm. Threaded at drive end.
12 volt armature with parallel shaft, 179mm. Threaded at drive end. (UK)
12 volt field winding (UK)
Drive end bearing (EU)
Commutator bearing (EU)
2 x Poles shoe screws (UK)
Brush set (Genuine Lucas)
Reproduction of Lucas dynamo service book
We have a great deal of experience with dynamos. For trouble free 6 or 12 volt operation with good output and without causing the armature to over-heat we recommend our UK made, solid state regulators for positive or negative earth machines. These can be swapped from 6 to 12 volts so you only need to chose the correct earth polarity.
Fitted to many models so check your manual:
Ariel singles 1954-56
BSA B&M Group 1950-57
Douglas 80 and 90 1950-55,
Royal Enfield singles 1951-55, R E Twins 1954-55
Norton singles 1950-58