I have the upright wheel, double treadle. I have spent too much time today playing rather than cleaning up the dust from sanding the kitchen floor! I think the ratios are different, so I will probably carry on the yarn for my sweater on my traddy, and continue to play with the different ratios on the Lendrum. I have the jumbo head and a fast flyer, so I think that gives me a range of nine ratios to play with!