3″ Engine Part 4 By davek0974 | 27/06/2006 - 3:09 pm |28/03/2015 3" Traction Engine Crankshaft brackets Crank bearings and turning mandrel Crank bearing parts Crankshaft in the lathe Splines milled in Crankshaft gears, keyways cut Fitted to crankshaft Bookmark the permalink.