19 Jul 2015

1989 Ironman has different geometry

Submitted by admin

There has been alot of discussion out there with Centurion fans that the 1989 Centurions had different gemetry frame than the prevoius years. Well i cannot speak for 1988 but i can tell you that 1987 and 1989 Geometry are different in the frames. There seems to be a 2 degree decrease in headtube angle. which would make it a quicker steer . Also Chainstay to Seatstay angle is decreased by 1 degree for 1989 from 1987. 

My Basis for comparison are matching size frames both 60cm one is a 1987 Ironman Expert (Magenta/Yellow) and a 1989 Ironman Expert (Black)

Now im not a frame builder by any means but there was definitely a difference of geometry in the 2 frames. I will post some more information when i can get my findings verified.

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