| Glossary I | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0..9 | A | B | C | D | E | F | G | H | I | J | K | L | M |
| Misc | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Ignition Timing Point at which, relative to crankshaft rotation or piston position, the ignition spark occurs.
In-Line Engine layout in which the cylinders are arranged in a row, and in-line with the wheels of the machine.
I.O.E. Inlet over exhaust. Valve layout used on some early machines in which the exhaust valve was mounted to the side of the engine and the mechanically operated inlet valve was positioned above the exhaust.
ISDT International Six Day Trial.
Isolastic Proprietary name for an engine/swingarm rubber mounting system used by Norton on its early Commando models.