WEIGHT IS NOT A USEFUL SPEC FOR A TRACK BIKE. Once you have accelerated to speed, weight does not mean ****. You really need to stop being so ignorant and read up a little before posting. You know what I did when I was going from road bikes to fixed gear. I shut the **** up and searched the forum and read post to figure out what was going on. Maybe you should do the same. 1 in 10 people in both of your post is giving you real help. Every one else is just ****ing with you. This is not personal at all, so do not take it that way. Come back when you have your **** together, and I am sure every one will be glad to help you.