Nursery for New Members

yeah there is thread. just noticed it.
will screwing one of these, for example, do the job?
http://www.ebay.co.uk/itm/Dicta-Chrome-Single-Speed-BMX-Freewheel-Sprocket-18T-/280703405613?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item415b3a0e2d

not sure about chain size... is 1/8" size. may be worth visiting local bike shop tommorow. i dont want to be messing around on a new bike :-)

amlu, my opinion is, when in doubt, and your wifes safety is in hand, pay the extra few quid to have a pro sort it!