I don't think it can really be pinned down since different makes were peaking at different times.
ball park figure....eh sumware twixt '83 & 89. For my bikes, sumware between my $60 'Vega
& the discarded Centurion frame I just rebuilt.
P.S. FlatSix This is a 'bike' forum, save your politics for twitter.
Last edited by rawly old; 08-07-15 at 09:24 AM.