Here is a picture of the one on my Giant Excursion (the rear wheel has been removed for clarity.)



The generator is spring loaded and the cable holds it off the wheel. Don't recall which one is on my Giant. I am pretty sure it will be a Sanyo.

Just for the record... Sturmey-Archer produced it's first Dynohub the GH12 in 1936, it then became the GH8. the GH6 which is what most of us are familiar with was produced from 1945-1983, along with the FG and AG, which were 4 speed and 3 speed hubs with the GH6 generator mechanism installed. Interestingly enough the GH6 housing is the same as the one they used for their many of their drum brakes from that era.

I have another odd bike a Columbia Commuter III that has a strange brass contact set up in the head set to allow for a the fork mounted sidewall generator to power the fender mounted tail light. The entire front fork assembly comes off the bike for storage, the generator and head light are mounted on the fork.



I am in complete agreement that LED's are probably the best thing to happen to bicycle lighting in a long time. I have a Raleigh Twenty that uses an AG hub that powers up a B&M LED head light and LED tail light at any speed above a fast walk.



Out of my 30+ bikes at least 9 have some form of generator powered lighting.

Aaron