Three bearing crankshaft design can make some of these old twins rather self-destructive but later models had adequate engineering and steering. CSR models offer a touch more go and style, if less mechanical integrity. There are still some artfully bodged examples on the market, but their shot parts are usually shown up by excessive vibration. No real reason to buy one, other than on pricing. Also Matchless G9/11.
1949-61 498/593cc OHV twin 29/33hp, 85/90mph, 65mpg, 400lb