Join Date: Nov 2009
Location: US/Spacecoast, FL
If your goal is to become a better rider, I would say that a 600 would do that for you quicker than a liter bike on the track. The reason I say that is because you will naturally want to try and keep up with others on the track (just a normal thing to do). If you're on a liter bike you can "cheat" the track by gaining your ground on the straights and not really learning to improve your riding (as quickly) in the turns (braking, entry speed, corner speed, exit acceleration, etc.). With a 600, believe me... you can still keep up with MANY of the liter bikes out there on the track... but it is done by being better than them on the brakes, corner speed, and getting back on the throttle. <--- this is where you will become a better rider.
Out of all your options, that 675R would be flat out amazing!! However, you just need to be prepared to accept your bike getting tossed down on the track... so balance that with the amount you're willing to pay for a bike. Whatever you do, buy a bike that is already set up for the track - it will save you a lot of time and money trying to convert a street bike to a dedicated track bike. 08 R6's are great bikes too! If it were me, I'd probably opt for that - cheaper buy-in, parts availability, and plenty folks before you have set one up so there's a lot of great suggestions on geometry, settings, etc.
BTW, a liter bike will teach you great things on the track too... but my experience is that folks stop improving sooner on them due to the power they produce and really utilizing it on the straights... and not learning what true riding is all about (brakes, turns, getting out of the turns quick).
Afterall, that is the normal progression in racing venues too (Moto 3, Moto 2, then to the big boys - MotoGP)... same with AMA (SS, Daytona SS, Superbike). It teaches the skills to go fast!
Last edited by 1000RR; 11-26-2012 at 12:32 PM.