Originally Posted by
TejanoTrackie
Thanks ! The crankarms are 1970s Sugino Mighty Compe road with a track chainring. Back then, road cranks had a 144mm BCD spider, same as track cranks are today. The saddle tilt is normal for a Brooks Pro, and the seating surface is actually horizontal that way.
just for clarification here: most road cranks back then didn’t have 144bcd. There was and still is a lot of variation. The two companies that used 144bcd for both road and track were campagnolo and sugino. Mostly because sugino was very largely copying campagnolo. Shimano used 130 for road and 151 for track, before settling on 144 for track. Eventually campagnolo settled on 135 for road cranks.