Hi, I've decided to try and get back into cycling after too many lazy years with motorbikes and cars, The last bike I had back in the early 80's was a nice light Holdsworth complete with fancy lugs and (of all things) a Bickerton folding bike chainset (it was the only way to get 57 teeth !) . I have just bought a nearly new Carrera TDF (yes I know its not perfect but its 100% better than my mates new Raliegh Pursuit, what happened to Raliegh . . . . . . ? ) as a cheap way of getting back to two wheels . For the money I'm pleased with it, however . . . I find the standard (Shimano) front and back mech and the standard chainwheel pretty cheap and cheerfull, does anyone know what I can upgrade these to whilst on a budget ? What will fit the standard bottom bracket ? (last time I changed one it involved ball bearings and a C spanner ! ). Thanks for any help 
