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Post by fatmanona5a on Mar 1, 2015 8:29:27 GMT
I have just uploaded a ride from an Edge 200 to Garmin Connect, and then it's been automatically transfered to Strava. The distance is identical between Garmin & Strava. Strava has Elevation Gain of 2951 and "calories" of 2311. Garmin has Elevation Gain of 2640 and "calories" of 5080. Under Garmin Personal Records, the Elevation Gain is recorded as 4314! My head hurts! Should we take data with a very large pinch of salt? Or just stick to Garmin OR Strava, and not compare them.
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Post by Radchenister on Mar 1, 2015 8:35:37 GMT
Yes.
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Post by phred1812 on Mar 1, 2015 13:25:53 GMT
Could anyone help me to get data from my Garmin 200 to transfer to Strava? Normally I just plug the Garmin into my laptop, logon to Strava, hit activity feed and the new ride is there but I cannot find today's ride although its definitely there in the unit's history. Also, how does Strava work out the average watts generated? I always feel its cheating me but possibly not. Forget the first question - its working now.
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Post by ChrisD on Mar 1, 2015 14:13:58 GMT
Could anyone help me to get data from my Garmin 200 to transfer to Strava? Normally I just plug the Garmin into my laptop, logon to Strava, hit activity feed and the new ride is there but I cannot find today's ride although its definitely there in the unit's history. Also, how does Strava work out the average watts generated? I always feel its cheating me but possibly not. Forget the first question - its working now. Here's the page from the Strava "Zen desk" that covers the power estimates: strava.zendesk.com/entries/20959332-Power-CalculationsFeel free to let us know what you think. I can recall this topic coming up at least once before. I think our heat and light from that discussion was that, as long as weight of rider and bike have been entered correctly, the estimates are probably quite good for uphill segments where prevailing conditions and marginal drains have less effect as a proportion of output. Anything else needs a fair amount of salt.
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Post by Radchenister on Mar 1, 2015 15:40:48 GMT
phred1812 , you can search your 200 from PC, find 'Activities' folder and manually drag and drop to desktop, then search for the file via the file upload method on Strava; conversely, mine has started working automatically again today, after a long spell of non co-operation. As Chris says, power stat's are OK (ish) for hills but only half reliable, I believe that they're useless elsewhere, if I use ipBike and a HRM / Cadence / Speed sensors, rather than just the GPS on my Garmin 200, suddenly my power stat's are through the roof ... just makes me think WALOB. I've said this before, IMO, Strava is a social site and on the whole a decent motivator ... but only loosely accurate and to be taken with a pinch of salt - if you fancy yourself as a bit quick and it really bothers you where you're at in relation to others, then go do TT's, hill climbs or crit's and do it properly (general comment to all, as I realise that you're probably not up for racing full on, I'm not sure I am ).
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Post by phred1812 on Mar 1, 2015 18:33:18 GMT
A bit quick I am definitely not although I think I might have been 50 years ago. My stamina is getting better though. Really I am not that bothered about Strava but I do wish it would give me a score over 100 occasionally. I did lie to it about my weight. I am nearer 73 kilos than 71. Presumably it takes more power to get those 2ks up hills. My old Hybrid which I am mainly using at the moment is well over 12 kilos whilst the Cinelli is only 8. The T3 is somewhere between the two. Today I only managed 87 watts but I was only pottering and there was a howling gale blowing. I wonder if the extra effort required to ride into the wind is equally compensated when its behind you? I am sure there is a formula somewhere.
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Post by Radchenister on Mar 1, 2015 20:23:17 GMT
Sadly I've read about wind assistance (or lack of) on a very techy website, transpires it never really balances out on a loop in mathematical terms but there's loads of variables - I'll see if I can find it for you !
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Post by Radchenister on Mar 1, 2015 20:40:22 GMT
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Post by phred1812 on Mar 1, 2015 22:49:12 GMT
Thanks. I rather thought that was the case. i.e You don't get full payback from a following wind. I can't say I fully understand why but there are other factors involved such as rolling resistance.
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Post by Radchenister on Mar 1, 2015 22:55:12 GMT
Yep, various issues with inefficiencies and not being able to utilise any assistance linearly ... basically, when it's blowy, you're not getting a decent net figure on your total resistance compared to when it's still.
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Post by Rocket on Mar 1, 2015 23:13:58 GMT
Most of you will remember by East Lancs rides. They are basically a 10 mile TT there then turn around and do a 10 mile TT back on exactly the same course.
On a still day it takes me 30 mins each way so a round trip of 60 mins.
With a strong headwind it will take me 40 minutes there but on the return with a tailwind it only takes 25 minutes so a round trip of 65 minutes.
When going slower over the same distance it takes more time. When going faster over the same distance it takes less time. On a windy round trip I spend more time going slower for 10 miles but less time going faster as the same mileage is done quicker. This is why you never get payback changing from a headwind to a tailwind.
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