Norton guides

Norton Commando 750 and 850 isolastic twin

One guide covering the full Norton Commando production run — the 750 Combat and standard twins (1967-1972) through the 850 Mk1, Mk2, Mk3, and Interstate (1973-1977). The Commando's defining feature is its isolastic rubber-mount system, which absorbs the parallel-twin's vibration to deliver ride smoothness far above its displacement class; deflection limits (≤2.0 mm Mk1, ≤1.5 mm Mk2/Mk3) are the first tolerance a restorer must check. The guide covers the MA12-to-RM15 alternator transition, points-timing specs (28-32° static / 38-42° dynamic), Rita and SSI electronic ignition setup, Lucas 2MC lighting circuit, and the full 32-row tolerance table — shipped as a 30+ page PDF with a printable wiring diagram and the isolastic gauge tool list.