![]() magneto carries the numbers MK1-0 1231 DB-OX 1211A and has the name Lister on the base casting. The last engine to use a clockwise magneto was built on 14th May 1927, only six months into production, so from this we must deduce that problems were encountered almost immediately. A problem appears to have arisen because the governor thrust is also towards the magneto and the early arrangement would have the gears pushing against the governor thrust probably causing governor ‘flutter’ and shaft movement at start-up. A change was made at 81000 to spiral gears (D123 and D124) in order to reverse the thrust and direction of rotation, the thrust now being towards the magneto. The magneto was connected to the driving shaft by a small coupling (D10)Įngines from 80000 to 80905 were fitted with a clockwise rotation magneto and used (D23 and D24) spiral gears -to avoid confusion this means the same rotation as the engine. –R magneto was used, the letter ‘R’ indicating the direction of rotation of the contact breaker assembly. From David Edgington's "The Lister D Story"įrom Spec 10 until Spec 17, engines used what Lister termed ‘a direct drive magneto’ positioned on a foot-bracket low down towards to bottom of the crankcase. ![]()
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