08-21-2017, 07:50 AM
I could be wrong but I think that that style of side nerfs were not used until '76. Reference Rod's website http://www.vdm46.com/hartman-kart-id.html. I also have never seen one with only a single 1" tube behind the seat attached to the main frame rails. The castings for the rear bumper and axle bearings have the sockets for the tube or tubes in the case of the later ones but no tube. If I had to guess I would say it is no older than '75.