Early 80s Centurion super Le Mans with what looks to be all the original style bits on her.
When I start out and stand on the pedals I can hear a small squeak and feel a slight rumble through the handlebars. after a revolution or two it goes away.
Grease/change the ball bearings in the front fork? Other suggestions? I've lubed the pedals and around the headset with 3 in 1 and at first it seemed to help but that may have been wishful thinking on my part. The headset does not wiggle when I move the handlebars and turning feels fine...
I can live with it if I have to. Would like to get the bike running as much like new as possible without spending a fortune. It's a sweet little ride and I really like it as my Friday cruise-to-work bike.
As always, thanks in advance for the wisdom.