On 15/02/2011 19:34, Yigit Turgut wrote: >> I don't say I don't believe your story. Just that the place where you ra= n your tests seems out of this world. > Road is 30 degrees which made it worth for me to share beneath the > efficiency. I do not have detailed information about the test > environment (like coordinates) but it was in Elazig/Turkey where the > structure is mostly consisting of rocks, hills and mountains.There is > no sea at 500km diameter and I didn't have the equipment to measure > the air pressure so I don't know my distance relative to sea level > but it cannot be lower than a few meters. If you assume the start > point is at sea level then you should be right with your numbers 4 - 5 > km's. I just had a quick look on Google Maps out of interest. I can't find anywhere within a ~20km radius of Elazig where the=20 elevation is above ~1600m (there were no mountain symbols around I could=20 see. The lowest point I found was ~1000m, so that gives roughly a maximum 0f=20 600m possible climb. Comparing with a place that I visited on a skiing trip - Leysin,=20 Switzerland, which I recall had some very steep roads - I checked this=20 out and found a climb from 500m to 1952m in ~4km (as the crow flies)=20 which IIRC is pretty much straight up a mountain side with no roads, but=20 even that is "only" ~20 degrees. I imagine any actual roads around there=20 are not anywhere near as steep (not enough time to investigate further=20 right now though) Also, on the video the gradient looks pretty flat too - are you sure you=20 didn't mean 3 degrees, 1:30, or something? --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .