Bike computer minimal speed threshold?
10-27-09, 10:11 AM
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Bike computer minimal speed threshold?
Just wondering, do most bike computers average the speed over the entire trip, or is there a threshold minimal speed setting? In other words, if I'm rolling at 1mph, waiting for a traffic light, is this getting averaged in? I assume so. I know if I'm not moving, it will not continue to average.
BTW, I have a Cateye Astrale 8.
BTW, I have a Cateye Astrale 8.
10-27-09, 10:25 AM
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Just wondering, do most bike computers average the speed over the entire trip, or is there a threshold minimal speed setting? In other words, if I'm rolling at 1mph, waiting for a traffic light, is this getting averaged in? I assume so. I know if I'm not moving, it will not continue to average.
BTW, I have a Cateye Astrale 8.
BTW, I have a Cateye Astrale 8.
. A 20 mile mountain bike ride would register as a 3 mile ride
The electronics have improved somewhat since then and the computers are more sensitive to slow speed input. The Cateye Enduro I used to run had an A and B wheel setting. The A setting was for road bikes while the B setting was for mountain bikes. The B setting was more sensitive to slow speed input. I do suspect, however, that even for the road bike setting, the sensor would register when the magnet passes.
If you are stopped at a light (or track standing) just make sure the magnet isn't passing the sensor
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Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
10-27-09, 10:30 AM
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It may depend on the computer. I used an Avocet long, long ago for mountian biking and it wouldn't register below about 5 mph. Wasn't much use at all. A 20 mile mountain bike ride would register as a 3 mile ride
The electronics have improved somewhat since then and the computers are more sensitive to slow speed input. The Cateye Enduro I used to run had an A and B wheel setting. The A setting was for road bikes while the B setting was for mountain bikes. The B setting was more sensitive to slow speed input. I do suspect, however, that even for the road bike setting, the sensor would register when the magnet passes.
If you are stopped at a light (or track standing) just make sure the magnet isn't passing the sensor
. A 20 mile mountain bike ride would register as a 3 mile rideThe electronics have improved somewhat since then and the computers are more sensitive to slow speed input. The Cateye Enduro I used to run had an A and B wheel setting. The A setting was for road bikes while the B setting was for mountain bikes. The B setting was more sensitive to slow speed input. I do suspect, however, that even for the road bike setting, the sensor would register when the magnet passes.
If you are stopped at a light (or track standing) just make sure the magnet isn't passing the sensor
10-27-09, 10:42 AM
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When you say "register", do you really mean "read/detect on the display"? Because the Astrale definitely shows at slow speeds less than 5mph. I'm more interested in cutting off those data points on the trip average ... especially when my route takes me through a bunch of traffic lights. I doubt this is possible with the Astrale.
You could always just slide it off the contact points when you are moving slow. Or install a cut out switch
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Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
10-27-09, 10:50 AM
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As a designer, I would have had an initial config minimum speed setting, under which the average and elapsed time would not count. I would have also put in a "pause" setting/button to possibly eliminate certain segments of one's ride. I'm guessing some of the higher end models do this??
All that said, I think the Astrale 8 is a great little computer for the money. It has been rock solid for 5+ years.
10-27-09, 11:07 AM
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It isn't that important to necessitate mods or removing from the contacts. I was just curious.
As a designer, I would have had an initial config minimum speed setting, under which the average and elapsed time would not count. I would have also put in a "pause" setting/button to possibly eliminate certain segments of one's ride. I'm guessing some of the higher end models do this??
All that said, I think the Astrale 8 is a great little computer for the money. It has been rock solid for 5+ years.
As a designer, I would have had an initial config minimum speed setting, under which the average and elapsed time would not count. I would have also put in a "pause" setting/button to possibly eliminate certain segments of one's ride. I'm guessing some of the higher end models do this??
All that said, I think the Astrale 8 is a great little computer for the money. It has been rock solid for 5+ years.
Start or Stop of Measurements.
The computer can be programmed to run in either MANUAL MODE or
AUTO TIME MODE. In Manual Mode you must press the START / STOP
button to turn on and off the Timer, which records Distance and Average
Speeds. In Auto Time the computer turns the Timer on and off depending
on a signal from the sensor.
When speed is detected by the computer and the Timer is running, the
km/h or mph will flash. Speed will appear on the computer screen and
the Odometer will record, regardless if the Timer is running or not.
• Auto Time Mode (Automatic Measurement)
In AUTO TIME mode, the letters will appear on the computer screen.
Elapsed time, Average and Distance are recorded automatically and the
Timer, stops when the speed stops. In this mode the START/STOP button
is not operable.
The computer can be programmed to run in either MANUAL MODE or
AUTO TIME MODE. In Manual Mode you must press the START / STOP
button to turn on and off the Timer, which records Distance and Average
Speeds. In Auto Time the computer turns the Timer on and off depending
on a signal from the sensor.
When speed is detected by the computer and the Timer is running, the
km/h or mph will flash. Speed will appear on the computer screen and
the Odometer will record, regardless if the Timer is running or not.
• Auto Time Mode (Automatic Measurement)
In AUTO TIME mode, the letters will appear on the computer screen.
Elapsed time, Average and Distance are recorded automatically and the
Timer, stops when the speed stops. In this mode the START/STOP button
is not operable.
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Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Stuart Black
Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
10-27-09, 11:19 AM
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Yes, I would never remember to re-activate the computer in MANUAL mode. I'm as absent-minded as they come!
10-27-09, 11:31 AM
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My Planet Bike computer allows very slow speeds, around 1 MPH. The distance counts up as long as it gets a pulse every 5 minutes (at which point it goes to sleep). The time counts up as long as it's getting a pulse fairly often, I think probably about every 5 seconds. While I CAN ride slower than that, I rarely do; that's more of a trackstand.
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10-27-09, 04:22 PM
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My VDO had a minimum speed setting for the auto pause, and I think most computers that have an autopause would also. I used to ride with a fellow who had his autopause set to ignore speeds below 7mph. When we finished the ride his average speed was 16mph and mine was 12mph, we both rode the same route at the same time. He just couldn't stand to think he was that slow.
torgrot
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torgrot
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10-27-09, 05:56 PM
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My VDO had a minimum speed setting for the auto pause, and I think most computers that have an autopause would also. I used to ride with a fellow who had his autopause set to ignore speeds below 7mph. When we finished the ride his average speed was 16mph and mine was 12mph, we both rode the same route at the same time. He just couldn't stand to think he was that slow.
torgrot
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I guess I'll just add 4mph to all my averages!
