Wasn’t it you who posted up last week about getting into track racing?
Best bet initially is probably to use one of the hire bikes – certainly the Manchester ones are in pretty good condition and are decent entry level machines. It’ll give you an idea of what size to go for and how the geometry works. For indoor riding, bikes need a minimum of 11″ BB height, outdoor tracks are less critical cos they’re slightly less banked (usually).
Dolan is probably one of the best known names in track cycling, they do everything from entry level right up to top end pro race stuff. Try and go to a couple of track sessions, have a look at what people are riding, most folk are happy to talk about what they use and maybe let you sit on it for sizing.
Track bars are good, they have a more pronounced curve than normal road bars but you can get very good alloy ones for £15, it doesn’t need to be carbon.
For training just use clinchers, there are plenty of decent cheap wheels around but get the best tyres you can. Some velodromes specify tyres that are and aren’t allowed, certainly Manchester bans Michelin tyres and all dual compound tyres.
Drivetrain – anything will do, people use bodged roadie gear or track specific. Aim for about a 46-48T chainring. Coupled with a 15T cog it’ll give you a gear of 82 – 86″ which is perfect for beginners (Manchester and Newport both restrict riders to 88″ max in training sessions). Indoor tracks specify a maximum crank length of 165mm.
Everything else is pretty much the same.