[bobmebob]

iam thinking about buying a hyper 7 for some bashing and racing against some guys ive started to bash with at a bmx track nothing serious ive had nitro cars before so i have a good idea if anything needs replaced on how todo it. but was just wondering if anything should be replaced before i start running it after i get one and i should say it would be a secondhand one not brand new.

i know the mach engines arent the best but i suppose it all depends on how good it was when it was brand new and how long its been ran for now so any advice would be great.