diesel moped..... to start it take a piece of this????
The most extreme cold-starting system was probably that developed by International Harvester for their WD-40 tractor of the 1930s. This had a 7-litre 4-cylinder engine which ran as a diesel, but was started as a petrol engine. The cylinder head had valves which opened for a portion of the compression stroke to reduce the effective compression ratio, and a magneto produced the spark. An automatic ratchet system automatically disengaged the ignition system and closed the valves once the engine had run for 30 seconds. The operator then switched off the petrol fuel system and opened the throttle on the diesel injection system.
that'd take care of startup compression, if not make the bike huge lol