Welcome

hey im new to this site and cant figure the shit out...
i have a bike related question but cant post it any other way but to butt in on your shit...

does anyone know if i can use late 80s shimano dx or ax pedals with stronglight cranks?
i dont know what thread diameter they are...??? anyone know? peace

These?

They are 9/16" in size. If you've got the Stronglight Track cranks you should be ok.

Stronglight's high-value track crank features hot forged 2014 T6 alloy silver anodized arms. Available in lengths of 165 or 170. The cranks are designed to fit traditional square-taper bottom bracket spindles (JIS taper, 107 mm length). Pedal threads: 9/16×20 (the common standard for current pedal models).