I met this guy the other day, Stan. He came up my drive as he was interested in my airhead PD. Stan is 84, has still got a couple of motorbikes including an airhead but still a big cyclist. He was nearing completing a 50 mile trip including some trails on this bike which he built himself. I mean built. Frame as well! He designed it, hired the jigs and brazed up himself. Beautifully done.
More recently he bought bits from Woosh bikes, Sandwich and made it an E-bike. £350 for the battery and £300 for the motor. Really neat job and he reckons it's a really good set up. Said the bearings in the Chinese motor were crap though so changed them before fitting. Nice guy. I'm going to visit him and see what the old BMW is that he's got tucked away in the back of his garage. Hope I'm still doing that stuff at 84!