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Bell Dashboard 100, re-enter odo numbers?
Had to change the battery again on my Bell Dashboard 100 cycling
speedometer. Or what they call "cycle computer" In the manual it says one can re-enter the odometer reading but nowhere it says how. When I contacted Bell years ago they said "no, you can't". Does anyone know a secret trick Bell doesn't know? I keep a log but it gets old having to calculate to see when the rear tire or other stuff is nearing end-of-life. Mainly to avoid a *KAPOW* surprise way out in the boonies. Many tires don't have TWI. -- Regards, Joerg http://www.analogconsultants.com/ |
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Bell Dashboard 100, re-enter odo numbers?
Joerg wrote:
Had to change the battery again on my Bell Dashboard 100 cycling speedometer. Or what they call "cycle computer" In the manual it says one can re-enter the odometer reading but nowhere it says how. When I contacted Bell years ago they said "no, you can't". Does anyone know a secret trick Bell doesn't know? I keep a log but it gets old having to calculate to see when the rear tire or other stuff is nearing end-of-life. Mainly to avoid a *KAPOW* surprise way out in the boonies. Many tires don't have TWI. No idea sorry haven't used a computer like that for years they used to drive me potty to be honest. I'm guessing isn't your sort of thing, but at least one of the GPS training/logging sites you can keep a list of bikes and components hence I can see on average how long X part tends to last. More normally I use it as note to check chains once they have hit likely mileages. Roger Merriman |
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Bell Dashboard 100, re-enter odo numbers?
On 2017-07-28 14:03, Roger Merriman wrote:
Joerg wrote: Had to change the battery again on my Bell Dashboard 100 cycling speedometer. Or what they call "cycle computer" In the manual it says one can re-enter the odometer reading but nowhere it says how. When I contacted Bell years ago they said "no, you can't". Does anyone know a secret trick Bell doesn't know? I keep a log but it gets old having to calculate to see when the rear tire or other stuff is nearing end-of-life. Mainly to avoid a *KAPOW* surprise way out in the boonies. Many tires don't have TWI. No idea sorry haven't used a computer like that for years they used to drive me potty to be honest. Yeah, their setup isn't the most intuitive. They also failed to design in a reliable low battery warning. Mine started to ignore button presses and the LCD was a bit pale. Turned out the battery was at 1.15V, amazing that it still logged miles. I'm guessing isn't your sort of thing, but at least one of the GPS training/logging sites you can keep a list of bikes and components hence I can see on average how long X part tends to last. More normally I use it as note to check chains once they have hit likely mileages. I'd like to keep it simple, don't want to turn my bikes into rolling computers. I was just wondering about the discrepancy between what the manual says and what their customer service said. -- Regards, Joerg http://www.analogconsultants.com/ |
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Bell Dashboard 100, re-enter odo numbers?
"Joerg" wrote in message ... Had to change the battery again on my Bell Dashboard 100 cycling speedometer. Or what they call "cycle computer" In the manual it says one can re-enter the odometer reading but nowhere it says how. When I contacted Bell years ago they said "no, you can't". Does anyone know a secret trick Bell doesn't know? I keep a log but it gets old having to calculate to see when the rear tire or other stuff is nearing end-of-life. Mainly to avoid a *KAPOW* surprise way out in the boonies. Many tires don't have TWI. -- Regards, Joerg http://www.analogconsultants.com/ Looking at your day job from the above link why not just design a circuit to replicate the job of the magnet which is only a switch which is creating a pulsed current/voltage read by the head unit electronics. Then set the tyre size to maximum and determine the maximum response frequency of the head unit circuitry and simulate pulses at that frequency. If the frequency is reasonably high it should not take too long to reset the mileage. With a tyre circumference of 9999mm, if it will take that, then you are looking at 10m per Hz. Graham. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
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Bell Dashboard 100, re-enter odo numbers?
On 2017-07-29 02:14, Graham wrote:
"Joerg" wrote in message ... Had to change the battery again on my Bell Dashboard 100 cycling speedometer. Or what they call "cycle computer" In the manual it says one can re-enter the odometer reading but nowhere it says how. When I contacted Bell years ago they said "no, you can't". Does anyone know a secret trick Bell doesn't know? I keep a log but it gets old having to calculate to see when the rear tire or other stuff is nearing end-of-life. Mainly to avoid a *KAPOW* surprise way out in the boonies. Many tires don't have TWI. -- Regards, Joerg http://www.analogconsultants.com/ Looking at your day job from the above link why not just design a circuit to replicate the job of the magnet which is only a switch which is creating a pulsed current/voltage read by the head unit electronics. Then set the tyre size to maximum and determine the maximum response frequency of the head unit circuitry and simulate pulses at that frequency. If the frequency is reasonably high it should not take too long to reset the mileage. With a tyre circumference of 9999mm, if it will take that, then you are looking at 10m per Hz. Sure I could design a meter that works better than commercial one. However, I've got enough electronics projects as it is. When I am fully retired, maybe. But then I want to ride instead of build replacements for messed-up commercial designs. On the bikes I already had to do that for lighting but there it was a necessity. If I ever build my own it will be like what cars have since over 100 years. A speedometer that is backlit at night, works off the central battery and most of all never forgets its odometer info. -- Regards, Joerg http://www.analogconsultants.com/ |
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Bell Dashboard 100, re-enter odo numbers?
On Saturday, July 29, 2017 at 10:06:59 AM UTC-4, Joerg wrote:
Snipped Sure I could design a meter that works better than commercial one. However, I've got enough electronics projects as it is. When I am fully retired, maybe. But then I want to ride instead of build replacements for messed-up commercial designs. On the bikes I already had to do that for lighting but there it was a necessity. If I ever build my own it will be like what cars have since over 100 years. A speedometer that is backlit at night, works off the central battery and most of all never forgets its odometer info. -- Regards, Joerg http://www.analogconsultants.com/ Those who can, do. Thse who can't, complain on Usenet. Cheers |
#7
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Bell Dashboard 100, re-enter odo numbers?
"Joerg" wrote in message ... On 2017-07-29 02:14, Graham wrote: "Joerg" wrote in message ... Had to change the battery again on my Bell Dashboard 100 cycling speedometer. Or what they call "cycle computer" In the manual it says one can re-enter the odometer reading but nowhere it says how. When I contacted Bell years ago they said "no, you can't". Does anyone know a secret trick Bell doesn't know? I keep a log but it gets old having to calculate to see when the rear tire or other stuff is nearing end-of-life. Mainly to avoid a *KAPOW* surprise way out in the boonies. Many tires don't have TWI. -- Regards, Joerg http://www.analogconsultants.com/ Looking at your day job from the above link why not just design a circuit to replicate the job of the magnet which is only a switch which is creating a pulsed current/voltage read by the head unit electronics. Then set the tyre size to maximum and determine the maximum response frequency of the head unit circuitry and simulate pulses at that frequency. If the frequency is reasonably high it should not take too long to reset the mileage. With a tyre circumference of 9999mm, if it will take that, then you are looking at 10m per Hz. Sure I could design a meter that works better than commercial one. [snip] No you miss my point. I am not suggesting you design/build a new unit simply knock up a simple circuit to mimic the magnet driven switch opening and closing and connect it to the appropriate terminals on the head unit. If the unit can respond to switching rates up to say 1kHz then the job should be reasonably quick and could be left to run for a known period of time to get the mileage back to where you want it. At 10m per switch cycle you would advance the reading 36kms/hr at 1hz so 100Hz which should be possible would give you 3600kms/hr 1KHz would look to be ideal as it would give you 36,000kms/hr. A bench grinder would also work with a magnet fixed to it and the sensor held next to it. That might take a good bit longer depending on the speed of the grinder. Graham. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
#8
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Bell Dashboard 100, re-enter odo numbers?
On 7/29/2017 10:19 AM, Graham wrote:
"Joerg" wrote in message ... On 2017-07-29 02:14, Graham wrote: "Joerg" wrote in message ... Had to change the battery again on my Bell Dashboard 100 cycling speedometer. Or what they call "cycle computer" In the manual it says one can re-enter the odometer reading but nowhere it says how. When I contacted Bell years ago they said "no, you can't". Does anyone know a secret trick Bell doesn't know? I keep a log but it gets old having to calculate to see when the rear tire or other stuff is nearing end-of-life. Mainly to avoid a *KAPOW* surprise way out in the boonies. Many tires don't have TWI. -- Regards, Joerg http://www.analogconsultants.com/ Looking at your day job from the above link why not just design a circuit to replicate the job of the magnet which is only a switch which is creating a pulsed current/voltage read by the head unit electronics. Then set the tyre size to maximum and determine the maximum response frequency of the head unit circuitry and simulate pulses at that frequency. If the frequency is reasonably high it should not take too long to reset the mileage. With a tyre circumference of 9999mm, if it will take that, then you are looking at 10m per Hz. Sure I could design a meter that works better than commercial one. [snip] No you miss my point. I am not suggesting you design/build a new unit simply knock up a simple circuit to mimic the magnet driven switch opening and closing and connect it to the appropriate terminals on the head unit. If the unit can respond to switching rates up to say 1kHz then the job should be reasonably quick and could be left to run for a known period of time to get the mileage back to where you want it. At 10m per switch cycle you would advance the reading 36kms/hr at 1hz so 100Hz which should be possible would give you 3600kms/hr 1KHz would look to be ideal as it would give you 36,000kms/hr. A bench grinder would also work with a magnet fixed to it and the sensor held next to it. That might take a good bit longer depending on the speed of the grinder. There are sensors which can read 1720~1760rpm (grinder speeds) but a copper-steel reed switch is not one of them. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#9
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Bell Dashboard 100, re-enter odo numbers?
On 2017-07-29 09:16, AMuzi wrote:
On 7/29/2017 10:19 AM, Graham wrote: "Joerg" wrote in message ... On 2017-07-29 02:14, Graham wrote: "Joerg" wrote in message ... Had to change the battery again on my Bell Dashboard 100 cycling speedometer. Or what they call "cycle computer" In the manual it says one can re-enter the odometer reading but nowhere it says how. When I contacted Bell years ago they said "no, you can't". Does anyone know a secret trick Bell doesn't know? I keep a log but it gets old having to calculate to see when the rear tire or other stuff is nearing end-of-life. Mainly to avoid a *KAPOW* surprise way out in the boonies. Many tires don't have TWI. -- Regards, Joerg http://www.analogconsultants.com/ Looking at your day job from the above link why not just design a circuit to replicate the job of the magnet which is only a switch which is creating a pulsed current/voltage read by the head unit electronics. Then set the tyre size to maximum and determine the maximum response frequency of the head unit circuitry and simulate pulses at that frequency. If the frequency is reasonably high it should not take too long to reset the mileage. With a tyre circumference of 9999mm, if it will take that, then you are looking at 10m per Hz. Sure I could design a meter that works better than commercial one. [snip] No you miss my point. I am not suggesting you design/build a new unit simply knock up a simple circuit to mimic the magnet driven switch opening and closing and connect it to the appropriate terminals on the head unit. If the unit can respond to switching rates up to say 1kHz then the job should be reasonably quick and could be left to run for a known period of time to get the mileage back to where you want it. At 10m per switch cycle you would advance the reading 36kms/hr at 1hz so 100Hz which should be possible would give you 3600kms/hr 1KHz would look to be ideal as it would give you 36,000kms/hr. A bench grinder would also work with a magnet fixed to it and the sensor held next to it. That might take a good bit longer depending on the speed of the grinder. Ah, yes, clocking it all back in by pretending a 4120mi ride. Good idea. I could take an old printer motor, mout a wooden disc, glue a little magent on that and strap the whole thing into the spokes. It would probably take days though since the speedometer will peg somewhere. And eat a lot of the new battery's juice which would kind of defeat the purpose. There are sensors which can read 1720~1760rpm (grinder speeds) but a copper-steel reed switch is not one of them. Reed switches would be way too expensive for such products. It's usually just a coil. Almost has to be because it must generate a voltage that triggers the turned-off meter circuitry to turn on upon wheel rotation. -- Regards, Joerg http://www.analogconsultants.com/ |
#10
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Bell Dashboard 100, re-enter odo numbers?
On 7/29/2017 11:34 AM, Joerg wrote:
On 2017-07-29 09:16, AMuzi wrote: On 7/29/2017 10:19 AM, Graham wrote: "Joerg" wrote in message ... On 2017-07-29 02:14, Graham wrote: "Joerg" wrote in message ... Had to change the battery again on my Bell Dashboard 100 cycling speedometer. Or what they call "cycle computer" In the manual it says one can re-enter the odometer reading but nowhere it says how. When I contacted Bell years ago they said "no, you can't". Does anyone know a secret trick Bell doesn't know? I keep a log but it gets old having to calculate to see when the rear tire or other stuff is nearing end-of-life. Mainly to avoid a *KAPOW* surprise way out in the boonies. Many tires don't have TWI. -- Regards, Joerg http://www.analogconsultants.com/ Looking at your day job from the above link why not just design a circuit to replicate the job of the magnet which is only a switch which is creating a pulsed current/voltage read by the head unit electronics. Then set the tyre size to maximum and determine the maximum response frequency of the head unit circuitry and simulate pulses at that frequency. If the frequency is reasonably high it should not take too long to reset the mileage. With a tyre circumference of 9999mm, if it will take that, then you are looking at 10m per Hz. Sure I could design a meter that works better than commercial one. [snip] No you miss my point. I am not suggesting you design/build a new unit simply knock up a simple circuit to mimic the magnet driven switch opening and closing and connect it to the appropriate terminals on the head unit. If the unit can respond to switching rates up to say 1kHz then the job should be reasonably quick and could be left to run for a known period of time to get the mileage back to where you want it. At 10m per switch cycle you would advance the reading 36kms/hr at 1hz so 100Hz which should be possible would give you 3600kms/hr 1KHz would look to be ideal as it would give you 36,000kms/hr. A bench grinder would also work with a magnet fixed to it and the sensor held next to it. That might take a good bit longer depending on the speed of the grinder. Ah, yes, clocking it all back in by pretending a 4120mi ride. Good idea. I could take an old printer motor, mout a wooden disc, glue a little magent on that and strap the whole thing into the spokes. It would probably take days though since the speedometer will peg somewhere. And eat a lot of the new battery's juice which would kind of defeat the purpose. There are sensors which can read 1720~1760rpm (grinder speeds) but a copper-steel reed switch is not one of them. Reed switches would be way too expensive for such products. It's usually just a coil. Almost has to be because it must generate a voltage that triggers the turned-off meter circuitry to turn on upon wheel rotation. Except for rare exceptions (ex: defunct Avocet), almost all bicycle computers use that type of switch to iterate wheel or crank rpm. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
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