In defence of Lucas......
Talking about pacemakers my daughter used to be an accountant for a pacemaker company in Switzerland, but if that company had made bike electrics and replaced Lucas on our old bikes, the dynamos would have cost more than the bikes, and we would all be push bike enthusiasts today.
I'm not a fan of Lucas but we have to remember that we were as poor as church mice in those days and they had to make stuff that we could afford. Any company could make electrical kit that works well and last eons but to make it for pennies, that's a whole lot more difficult.
Thank you Mr Lucas, we're still pounding along the A38 at night with your kit that's over 50 years old, but it now has to generate 12V, run indicators and sustained high speeds/vibration which were unheard of in the old days.
Alan