What to build from scratch
For those of you who are posting that you want to build a car from scratch right now
here is one approach.
IMHO:
If I was starting from scratch, I would use the existing F500 dimensions as a starting point, go with a F500 sports car nose for the wider footbox/main frame rails in the cockpit (I am a big driver) and lengthen/widen the chassis and the bodywork to fit my body from the main hoop to the foot pedals. The rest of the additional length would be aft of the MC to enable a direct chain drive from the PTO to the tubular axle w/4 piston caliper and then lengthen the side pods to close up the gap to the rear tires. I would stay with the 10" wheels with 18" tires and use the 2" x 2" rubber pucks & rocker arms, initially. Later, as the coil over shock rules get defined better along with a spec shock being published then I would convert over to them with some major test 'n tuning called for. I probably will not use a swaybar or a dry sump as they are unnecessary. All tubeframe with some stressed aluminum panels and fiberglass bodywork from a F500. Buy the latest year GSXR600, modified harness, reprogrammed ECU, custom coated header/muffler, remote oil cooler/filter, modified oil pan, paddle shifter, all the heat shielding I can fit along with cooling naca ducts. Last, all the data logging/display needed along with the essential warning lights. This is an overview which is not all inclusive.
All of this, ready to race, for under $25K.
Jim