I've got a couple of motors laying around that need a home. Always tinkering. I dont think the NSR would work unless the motors will just bolt in.
Stating the obvious (and maybe there's a work around that I don't know of) but the NSR has Left Side Chain Drive while the RS250 has Right Side Chain Drive.
Are the laying around motors for RS250 or from/for something else that you intend to make work? The right side drive chain is a bit unique...
I think they changed from left to right around 1993 for the RS250. I had a 1993 RS250 RSD chassis and I think some Rotax and Maico 480 engines had RSD.
Bump, I was contacted a while back by a guy out of Michigan with a complete bike ,and a partial roller, I have lost your contact information please contact me still looking for a complete bike.