On the speedometer of my Stanley 750B from 1924 the mileage counter didn’t work anymore. It is a speedometer from Stewart-Warner, Chicago, type M-9.   Failure analysis   After dismantling, the mistake was obvious: the gear on the first intermediate shaft, which meshes with the worm on the input shaft, was completely ruined. The pinion […]

Can I lubricate plastic bearings with WD-40?   It´s common knowledge, that together with duct tape, WD-40 is THE universal tool to fix anything and everything. While the former keeps everything in place when it shouldn´t be moving, the latter keeps things going that shouldn´t stand still. Many people think that these two tools will […]