Hi all, Some of you will know that a while back I had a (very) brief flirtation with a rather nice Windcheetah Speedy. I only kept her for a couple of weeks before I decided it wasn't for me, but I'm still glad I tried it. I think of it as adding another paragraph to my cycling CV Anyway, at the time I was rather frustrated that there seemed to be almost no evidence to support which bike/trike was fastest over a given terrain or course. Yes there was lots of "oh you'll be faster on the downhills and slower on the uphills", but none of it was backed up with any evidence. So I had to more or less go into it blind. I've got some data that I collected on the Speedy when riding a familiar local course and it shows that overall, the Speedy was slower for me. I'm reasonably confident that with a little more recumbent conditioning, I would have closed the gap slightly, but not enough to make the trike my regular mode of day cycling. The course is rolling but not hilly, and I have data that shows given heart rate, elevation and speed of both bikes. The control road bike data was captured in February at a time when I consider my overall form would have been worse than the time I captured the Speedy data in May. The graphs are fairly busy, but if anyone wants them I could host some images to backup what I'm saying here. Please, I am not inferring recumbents are inferior in any way whatsoever, I am just trying to provide some material to help other people. It would be great if other riders could do similar comparisons on other courses to try and get an idea what is the optimum terrain for a recumbent trike. Course details: 'Out and back' across Wirral to the Eureka Cyclist's Café. Length: 24.9 miles Accumulated ascent: 825 feet Accumulated descent: 825 feet Windcheetah (unfaired): Average speed 14.6 mph Average HR: 142 bpm Time to complete distance - 1h 41m 53s Road Bike - Giant TCR2 ridden on the hoods - (I never use the drops) Average speed 16.5 mph Average HR: 146 bpm Time to complete distance - 1h 30m 45s Both bikes had recommend PSI of 110 PSI in the tyres. Perceived exertion was much greater on the Windcheetah, and to be honest, I was looking forward to getting home, but that's probably just me getting used to it! I'll never know for sure if I could ever close the gap, but my gut feeling is no. Anyone else got any other comparisons? I can post evidence for the forum statisticians if it helps Dave.