The Powercam had no connection to Stronglight. It was another of those many engineering and commercial flops that were claimed (and failed) to make pedaling a bicycle more efficient. These were built in Texas by an outfit calling itself Houdaille. There's more online including a page on the CR site.
Kurt Sperry Bellingham, Washington USA
2009/10/27 sean flores <seaneee175@gmail.com>:
> Came across this:
>
> http://ebay.com/
>
> Apologies if it's not on topic, but it's very curious. Looks like it's
> based around a Stronglight 99 crankset. Any ideas on this one. My only
> guess is something like Shimano FFS, but built into the crankarm.
>
> Couldn't seem to find any info on this. Not in the market, but I'm
> always curious about odd parts.
>
> Sean Flores
> San Francisco, CA