Multiple Speedometer Sensor Failures
Multiple Speedometer Sensor Failures
Sup ya'll. Having issues with my speedometer sensor, curious what to do.
Currently I have a Motogadget Motoscope Mini speedometer on it. When I bought my bike 4 years ago the speedometer was not working, I put a new sensor on it and boom it worked fine. I re-used that sensor a year later when I switched to the Motoscope, and had no issues for a year or so. Last fall, that speedometer sensor failed. Speedometer just stopped reading it, constantly showing MPH, speedometer display would not change when unplugging the speedometer signal wire from it, so 0MPH is what it shows if it is not reading a signal. I installed another new speedometer sensor this week, and 50 miles later that one has bit the dust as well. New speedometer sensor and the speedometer itself are the only 2 things being powered by the 1AMP circuit they're on, and they have their own common ground that is solid.
No metal shavings or anything like that on the magnetic speedometer sensor tip. The fact that it worked for a day then died makes me think it's the sensor again and not the speedometer itself failing. For farts and giggles I plugged in my stock speedometer, and it wouldn't read a speed signal either.
To bench test it, I'm thinking I'll power the signal up on my bench, and hook up a multimeter to the signal output and ground, then just pass a piece of metal past it rapidly to see if it's truly dead or something else is going on.
Is this a common failure, has anyone had something like this happen to them? I know a lot of Sportys out there run no speedometers so maybe not a lot of people would have this issue haha. Both new speedometers I bought that failed were just some cheap $20 ones I bought online. Looks like a new HD one is $70, should I just buy an HD speed sensor and hope my issue is that I've been using cheap ones?
Currently I have a Motogadget Motoscope Mini speedometer on it. When I bought my bike 4 years ago the speedometer was not working, I put a new sensor on it and boom it worked fine. I re-used that sensor a year later when I switched to the Motoscope, and had no issues for a year or so. Last fall, that speedometer sensor failed. Speedometer just stopped reading it, constantly showing MPH, speedometer display would not change when unplugging the speedometer signal wire from it, so 0MPH is what it shows if it is not reading a signal. I installed another new speedometer sensor this week, and 50 miles later that one has bit the dust as well. New speedometer sensor and the speedometer itself are the only 2 things being powered by the 1AMP circuit they're on, and they have their own common ground that is solid.
No metal shavings or anything like that on the magnetic speedometer sensor tip. The fact that it worked for a day then died makes me think it's the sensor again and not the speedometer itself failing. For farts and giggles I plugged in my stock speedometer, and it wouldn't read a speed signal either.
To bench test it, I'm thinking I'll power the signal up on my bench, and hook up a multimeter to the signal output and ground, then just pass a piece of metal past it rapidly to see if it's truly dead or something else is going on.
Is this a common failure, has anyone had something like this happen to them? I know a lot of Sportys out there run no speedometers so maybe not a lot of people would have this issue haha. Both new speedometers I bought that failed were just some cheap $20 ones I bought online. Looks like a new HD one is $70, should I just buy an HD speed sensor and hope my issue is that I've been using cheap ones?
Stellar HDF Member
Joined: Feb 2013
Posts: 3,072
Likes: 1,727
From: Dallas, Texas
I've got over 106,000 miles on my OEM Speed Sensor. So, it's not gonna wear out. Had to look up your Motoscope since I have no idea what it is. Only direction I can point ya in is contact Motogadget Motoscope.
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