Classic Techniques: Superblend bearings, part one

When the main bearings in Commando engines started disintegrating, Norton came up with a super solution – the ‘Superblend’ bearing which proved to be one of the success stories of the 1970s. Andy Heathwood explains how it was little more than smart marketing, and leads us through the potential pitfalls of specifying replacement bearings for big Norton twins today… The…