SIMPLE AND STRAIGHTFORWARD

Okay, it’s 1966 and we’re about to set ignition timing on a Yamaha TD1-B 250 roadracer. These are the good old days, right? No confusing suspension adjustments, no 10 levels of traction-control intervention—just the most basic stuff. To set timing, we need a dial gauge to tell us when the piston is 2mm before top center, and to mount that gauge, we screw a cadmium-plated ( Cadmium is a heavy metal, man! What’re you doing—tryin’ ta poison yerself?) dial gauge adapter into the spark plug hole. To reach down to the piston crown we have various dial gauge extensions… Ah, here’s the one. I slide the dial gauge with