alum. narrow track brake hubs?

[sremington]

has anyone used these...wondering if they were good or bad
i only know of 2 companies that make these..are there more
little worred about alum hub
just trying to pull in 8 inch wheel and go really low

[Leadfoot1]

A bit late but who builds those? Short track HUBS? I never heard of those...Sounds interesting,

Lead