I don't have specific knowledge.
I have not seen a failed Alan fork but they do break at some
low but measurable rate. Not more than other bonded aluminum
forks anyway. I know a couple of customers riding 50 year
old Alans with original fork BTW.
p.s. The Viscount product suffered from casting voids which
is a different thing from rolled aluminum tube.
--
Andrew Muzi
<
www.yellowjersey.org/>
Open every day since 1 April, 1971