Title fix: Meant "Shifting" not "Shiftin"
Hello Everyone,
So, here is another project for the bike.
Problem:
Speedometer is of by about 9% (reading high).
Goal:
Adjust it so it reads close to actual speed.
Idea:
Intercept the pulse train sent from the sensor on the transmission output shaft and change the frequency by a specific (adjustable) percent, thus obtaining an accurate speed reading on the speedometer.
The sensor seems to be some sort of inductive pickup similar to the variable reluctance magnetic pickup shown on page 8 here:
http://www.national.com/ds/LM/LM2907.pdf
If you connect an oscillator to the speedometer, set at 525Hz 50% duty cycle, 0-5v square wave, it reads 60MPH.
I am sure I missed some details, I usually do
Please do ask and I will try to explain as much as I can so that you may be able to help
Thanks for reading!!
Hello Everyone,
So, here is another project for the bike.
Problem:
Speedometer is of by about 9% (reading high).
Goal:
Adjust it so it reads close to actual speed.
Idea:
Intercept the pulse train sent from the sensor on the transmission output shaft and change the frequency by a specific (adjustable) percent, thus obtaining an accurate speed reading on the speedometer.
The sensor seems to be some sort of inductive pickup similar to the variable reluctance magnetic pickup shown on page 8 here:
http://www.national.com/ds/LM/LM2907.pdf
If you connect an oscillator to the speedometer, set at 525Hz 50% duty cycle, 0-5v square wave, it reads 60MPH.
I am sure I missed some details, I usually do
Please do ask and I will try to explain as much as I can so that you may be able to help
Thanks for reading!!
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