I have to say that one of the most immediately valuable bits of help I got from here seems almost trivial but probably saved an expensive bit of kit from destruction: the use of nylon locknuts and my toddler's water-soluble glue to stop the my MotorWind vibrating itself off my wall.
(Incidentally, I think that I can recommend MotorWind for trickle-charging applications even in relatively poor urban-wind circumstances providing that there is a decent breeze from time to time...)
Rgds
Damon