I would like to know if anyone has changed out the 1/4 inch pitch chain for a standard bicycle chain and crank on the Carryme. I bent my chainring and might be able to straighten it out but this maybe the time to just change out the whole drive train. The front crank I can understand but how to go about a standard bike sprocket for the rear I'm not sure about. This way I can chose the gear ratio and have a longer crank 170mm for more power climbing. I've seen many pictures of bike owners adding standard crank and chains but have no idea how to do it. Any ideas where to start?