MIND THE GAP

There are many aspects of building a Lambretta engine that can be challenging, few more so than the gearbox. The process of ‘shimming’ is often regarded as a dark art, but it doesn’t need to be. By going about the task in a methodical and careful fashion, the shimming process is easier than many think.

What is the correct shim?

One of the most asked questions about Lambretta gearbox assembly is: ‘What’s the correct thickness of shim required?’. The answer is there isn’t one, because all engines have different tolerances and until it’s measured there’s no way to know. It’s fair