Aftermarket tuning options PART 6
The crankshaft in your Lambretta engine is at the heart of power transmission, connecting the power created from the cylinder and transferring it on one side – to create the energy for the ignition – while on the other, driving the transmission chain and gearbox. Not only does it have a hard job doing all this, but it is also required to spin at high rpm under extreme load. If any part of the crankshaft should fail, then the engine simply ceases to exist as a power unit.
The biggest problem in deciding what crankshaft suits a certain type of Lambretta engine really depends on how much power it is producing. The main areas of concern are big end bearing being insufficient, con rod not being strong enough and the web pin not having enough strength to hold the two webs together without moving, more commonly known as twisting. Basically, the more power the top end is creating then the stronger it needs to be
