I'm thinking of fitting a Dynamo wheel to my Brompton. I've looked around and there don't seem to be many available. ( My Google -Fu skills might not be up to scratch ) some sites list them but say " not available " I can't really stretch to the Son hub but see there is a " SP Dynamo hub " which gets good reviews. Can anyone point me in the right direction? my Brommie is black so I would ideally like a black wheel, spokes and hub. As a retired engineer I would consider trying to build a wheel myself but my lack of knowledge and experience with bike stuff means that I don't know what what specific stuff I'd need so it could turn into an expensive but fascinating project.