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#122
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Garmin Edge 305 or Edge 500 ??
and off course the rare RBT blooper where poster goes on at great
lenght on how his chains using cow fat go on for thousands of uh kilometer miles or 26" 700c kilometer miles or.... |
#123
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Garmin Edge 305 or Edge 500 ??
seriously, before Magellan, the Cateye Enduro would hit mile markers
painted on Summerlin Road's bike path from San Carlos Blvd into Fort Meyrs, FL: maintaining consistant pressures from initial adjustment. On the mark-one mile/on the mark-two miles... 3 miles worth before the cateye missed the mark by 4-5 inches. 5 pounds +/- of 75-80 would miss the mark by not more than an inch at one mile using Conti TT. I question mounting a bike spec GPS on the bars. a 76sx in a rack or backpack does it without excessive exposure to accidental damage or theft or vandalism bar mounted. Bar mounting maybe understood as a sales gimmick not a useable fucntion. PYA |
#124
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Garmin Edge 305 or Edge 500 ??
On Sun, 18 Jul 2010 13:59:37 -0700 (PDT), kolldata
wrote: and off course the rare RBT blooper where poster goes on at great lenght on how his chains using cow fat go on for thousands of uh kilometer miles or 26" 700c kilometer miles or.... .... and then crashes, but his chain survives because he was wearing a h*lm*t |
#125
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Garmin Edge 305 or Edge 500 ??
well, the really cool deal is the prob is usually simple oversight. The normally intelligent used hasnot correctly discussed the issue with his Cateye and not rechecked due to other more p[ressing problems of life death taxes car payments due dates.... leading to an embarassing and hehehhe whoha. the Cateye I treasure insists the tires are 26" when the tires are not. 2-3 entries before Cateye gets the word. |
#126
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Garmin Edge 305 or Edge 500 ??
On Jul 15, 3:49*pm, wrote:
I hope that someone will tell us how a GPS like the Garmin handles distance with elevation change. That's pretty simple. It measures the distance just as it would be measured on a map (NOT including a relief map). DR |
#127
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Garmin Edge 305 or Edge 500 ??
In article ,
Phil W Lee wrote: Dan O considered Sun, 18 Jul 2010 08:47:23 -0700 (PDT) the perfect time to write: On Jul 18, 2:57 am, James wrote: On Jul 18, 5:31 pm, Michael Press wrote: In article , Jobst Brandt wrote: For precision, you need a road with accurate mile markers, as we have on west coast state route CA 1 from Pigeon Point light house to Santa Cruz that were placed there years ago to monitor driving speeds from aircraft. These twelve inch wide white epoxy strips enable a bicyclist to adjust speedometer calibration numbers to hit right on the mile for a mile... if you care. You also confuse precision and accuracy. They are not synonyms. This was covered in our freshman laboratories. I always assumed other schools taught this as well. Apparently not. A web link might help.. http://en.wikipedia.org/wiki/Accuracy_and_precision "In the fields of engineering, industry and statistics, the accuracy of a measurement system is the degree of closeness of measurements of a quantity to its actual (true) value. The precision of a measurement system, also called reproducibility or repeatability, is the degree to which repeated measurements under unchanged conditions show the same results.[1] Although the two words can be synonymous in colloquial use, they are deliberately contrasted in the context of the scientific method." So if you "hit right on the mile for a mile", you were accurate, but not necessarily precise unless you could repeat the feat, time and time again. Correct? Regards, James. Hmm,.. I don't think so (of course, I am not formally educated or anything like that, but... ) I think precision is simply the how close your measurements are (they will never be "spot on" - sorry :-), and accuracy is more about the correctness and reliability. To give an extreme example, if someone asks "where are we" and the answer is give as "planet earth", it is completely accurate, but so imprecise as to be useless. Wrong. The accuracy is ~8000 mile. The precision is indeterminate. -- Michael Press |
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