All Minors have two-bearing crankshafts, the vast majority of which are now almost 90 years old. As a result of this vulnerbility they require careful nurturing to safeguard their continued serviceability. One cheap strategy is to fit a digital tachometer to monitor and record engine revolutions as an aid to ensuring that these potentially fragile parts are not overstressed. Joe Rayner has contributed an article informing how to source and fit such an item. Find it in the Member’s Area Technical Bits section, under ‘Everything Else’. It’s entitled ‘Counting the revs on a 6-volt Minor‘.