I  mean,  how hard can it be? It’s one of the last details I am doing on the current Classic Bike project Excelsior Universal and for those who don’t read the magazine here’s the back story… The speedo had had it, the glass was broken and the innards had suffered accordingly and the drive gearbox was missing its drive pinion. Ferret, the King Rat of motor cycle electrickery, kindly came up with a speedo for us but the drive was…