ruxtell rear end

[3035keith]

Hi, Just joined Ford Barn and also just purchased a '27 roadster with a ruxtell rear end. I always understood that the ruxtell made the model T go faster. I now question that since I have read a few of the previous ruxtell comments. Does the Ruxtell just serve to get the car into a lower gear for going up hills in high gear or is it an overdrive unit? Thanks,