so ive been craving to go to a race track to be able to learn more about riding in a more controled enviroment. i still need to get a once pice suit and another bike to use for the track. i dont really care about going fast on the track i want to learn how to corner better so was think of going back to a ninja 250 for a track bike cause parts seem to be fairly cheap.
good idea? or do you have a better one?
Now, it's definitely possible.
First question: What do you currently ride?
I've seen a number of great 250 racers, but I would recommend against using a Ninja 250 as a track bike for several reasons...
1. On a Ninja 250, you are going to be going much slower than the other riders in your class. Being passed is par the course as you learn, but as an inexperienced track rider in a B-/C group, you may find yourself creating a dangerous traffic jam.
2. After market parts: you don't need a PC3 or a set of Yoshimura cams on to do well, but I highly recommend race plastics, after market engine covers, frame sliders and rear-sets for the track. All of these things will drastically reduce the expense of a low-side.
3. Wheels: There are limited tire choices for the 16 inch rims on 07 and earlier model ninjas. You may not be able to get good track rubber, and you will certainly have difficulty find slicks. The light weight and drastically reduced cornering loads of a EX250 will somewhat mitigate this factor, however.
4. Parts: if you need parts on the track (I.e. your brake lever snapped off) you are very unlikely to find them for a Ninja 250.
Here's what I highly recommend:
Peruse the for sale section of BARF and Craigslist for a used 600CC racing bike. Great bikes can easily be found for $4000 or less, and many of them come with $4000 in after market parts.
A used SV650 race bike may be another good choice. The 650s are very friendly bikes for a beginner, and I see a lot of them out there on the track.
By the way: congratulations on taking the first steps to the track! You won't be disappointed by the experience.