#51
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Wheel weight
On Wednesday, March 6, 2019 at 7:21:33 PM UTC-5, Frank Krygowski wrote:
On 3/6/2019 6:04 PM, Sir Ridesalot wrote: On Wednesday, March 6, 2019 at 11:19:45 AM UTC-5, Frank Krygowski wrote: Snipped Back in the mid-1980s I got my first cyclometer. For me, it was useful motivation for training - as in "I'm only going 19 mph? I can go faster than that!" Nowadays the data is just depressing. I try not to look at it too much.. -- - Frank Krygowski I guess that's why some people mount the cyclometer on their seatpost or seat-tube = so they aren't tempted to look at it whilst riding. Yet they have their accumulated mileage at the end of the ride. Very, very vaguely related: On my folding bike, I installed a Cateye wireless cyclometer, figuring any wire would eventually get ripped apart during the frequent folds and unfolds. But at temperatures less than about 45 Fahrenheit, it would lose contact with the sending unit. It would say Zero miles per hour, even though I was sure I was going a _little_ faster than that. Changing batteries in the sender or display units didn't help. Shifting the sender to different positions, ahead and behind the fork, didn't help. I finally fabricated a separate little stub mount to keep the display part about an inch in front of my handlebar. That seemed to cure the problem. I guess the handlebar itself was blocking the radio signal. My wife's identical bike has a much cheaper Echo brand wireless cyclometer. It has no such problem. -- - Frank Krygowski I had a Schwinn wireless bicycle computer that had the exact opposite problem intermittently. I'd be going down a hill and the thing would tell me I was doing 200+ kph which I knew I wasn't. Even on the flats the speed readout would be intermittent. nasty if you're using it to measure distances between camping spots or between roads and trails branching off the road you're on. Cheers |
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#53
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Wheel weight
On 7/3/19 6:58 am, Duane wrote:
I tried with my iPhone as well using RideWithGPS. In addition to your points, I was rarely able to see the screen on sunny days. I have that problem. I found to use the phone for navigation, I first make sure the route is properly bike friendly, then attach earphones and shove the phone in my back pocket and listen to the instructions as I ride. -- JS |
#54
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#55
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Wheel weight
Sir Ridesalot wrote:
On Wednesday, March 6, 2019 at 7:21:33 PM UTC-5, Frank Krygowski wrote: On 3/6/2019 6:04 PM, Sir Ridesalot wrote: On Wednesday, March 6, 2019 at 11:19:45 AM UTC-5, Frank Krygowski wrote: Snipped Back in the mid-1980s I got my first cyclometer. For me, it was useful motivation for training - as in "I'm only going 19 mph? I can go faster than that!" Nowadays the data is just depressing. I try not to look at it too much. -- - Frank Krygowski I guess that's why some people mount the cyclometer on their seatpost or seat-tube = so they aren't tempted to look at it whilst riding. Yet they have their accumulated mileage at the end of the ride. Very, very vaguely related: On my folding bike, I installed a Cateye wireless cyclometer, figuring any wire would eventually get ripped apart during the frequent folds and unfolds. But at temperatures less than about 45 Fahrenheit, it would lose contact with the sending unit. It would say Zero miles per hour, even though I was sure I was going a _little_ faster than that. Changing batteries in the sender or display units didn't help. Shifting the sender to different positions, ahead and behind the fork, didn't help. I finally fabricated a separate little stub mount to keep the display part about an inch in front of my handlebar. That seemed to cure the problem. I guess the handlebar itself was blocking the radio signal. My wife's identical bike has a much cheaper Echo brand wireless cyclometer. It has no such problem. -- - Frank Krygowski I had a Schwinn wireless bicycle computer that had the exact opposite problem intermittently. I'd be going down a hill and the thing would tell me I was doing 200+ kph which I knew I wasn't. Even on the flats the speed readout would be intermittent. nasty if you're using it to measure distances between camping spots or between roads and trails branching off the road you're on. Cheers I had my GPS drop a single solitary data point in the middle of the Pacific Ocean during my commute one day. "Funny, it didn't feel like 7,000 km to the office..." On the other hand, my average speed that day rocked. |
#56
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Wheel weight
On Thu, 7 Mar 2019 13:09:30 +1100, James
wrote: On 7/3/19 7:22 am, wrote: Where do you ride your bike at 15-20 hours at a stretch? I rode 10 hours for 250 km over two big mountains (Mt Hotham and Falls Creek), not to mention Tawonga Gap. That would have killed my phone battery trying to navigate through all the mobile black spots, in a couple of hours I reckon. But why? After all the road goes from here to there. Or perhaps there is a turn off maybe 3 miles down the road. One can only speculate how the Old Folks could go anywhere... without a GPS :-) -- Cheers, John B. |
#57
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Wheel weight
On 3/6/2019 9:09 PM, James wrote:
On 7/3/19 7:22 am, wrote: Where do you ride your bike at 15-20 hours at a stretch? I rode 10 hours for 250 km over two big mountains (Mt Hotham and Falls Creek), not to mention Tawonga Gap.Â* That would have killed my phone battery trying to navigate through all the mobile black spots, in a couple of hours I reckon. I take it you haven't tried one of those hub dynamo power circuits? -- - Frank Krygowski |
#58
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Wheel weight
On Thu, 7 Mar 2019 13:09:30 +1100, James
wrote: On 7/3/19 7:22 am, wrote: Where do you ride your bike at 15-20 hours at a stretch? I rode 10 hours for 250 km over two big mountains (Mt Hotham and Falls Creek), not to mention Tawonga Gap. That would have killed my phone battery trying to navigate through all the mobile black spots, in a couple of hours I reckon. The average bicycle dynamo can deliver 3 watts. If you ride for 10 hrs, that's 30 watt-hrs. Assuming an inefficient 5V USB battery charger, that's 6 amp-hrs or 6,000 ma-hrs. Assuming a smartphone with a modest 2,000 ma-hr battery inside, you could completely recharge your battery 3 times during your 10 hr ride. If you don't want the added load while climbing hills, then you can recharge perhaps 1.5 times during the ride. If you use an mapping app that allows you to store maps on your smartphone, you don't need cellular connectivity during the ride and can therefore operating in airplane mode to save power. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#59
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Wheel weight
On 7/3/19 1:50 pm, John B. Slocomb wrote:
On Thu, 7 Mar 2019 13:09:30 +1100, James wrote: On 7/3/19 7:22 am, wrote: Where do you ride your bike at 15-20 hours at a stretch? I rode 10 hours for 250 km over two big mountains (Mt Hotham and Falls Creek), not to mention Tawonga Gap. That would have killed my phone battery trying to navigate through all the mobile black spots, in a couple of hours I reckon. But why? After all the road goes from here to there. Or perhaps there is a turn off maybe 3 miles down the road. One can only speculate how the Old Folks could go anywhere... without a GPS :-) I once rode from near Gatwick airport to Brighton beach and back, all on small roads through villages. I had a paper map with me (before smart phones), and it was really frustrating to have to stop every few minutes to look at the map and memorise the next few turns. So many roads. So many little villages. -- JS |
#60
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Wheel weight
On 7/3/19 2:11 pm, Frank Krygowski wrote:
On 3/6/2019 9:09 PM, James wrote: On 7/3/19 7:22 am, wrote: Where do you ride your bike at 15-20 hours at a stretch? I rode 10 hours for 250 km over two big mountains (Mt Hotham and Falls Creek), not to mention Tawonga Gap.Â* That would have killed my phone battery trying to navigate through all the mobile black spots, in a couple of hours I reckon. I take it you haven't tried one of those hub dynamo power circuits? For the ride I mentioned, there was no need for navigation aids. I knew the route, though a part of it I had never been on. I have one of those USB charging circuits that can be powered by a dynamo. The trouble is, most phones need a bit more than 3W to keep them charged and track your location, etc. -- JS |
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