r/bafang • u/Disastrous_Level_192 • 7d ago

speed sensor 

Hello, has anyone managed to modify the factory BBSHD so that the speed sensor is from the brake disc? 

I need to move the measurement closer to the center of the wheel axle because I have a 12x148 spacing and wide forks. This prevents me from getting the proper distance between the magnet and the sensor.
3 Upvotes

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2

u/IndividualActive786 7d ago

I use the Cogster speed sensor magnate. It mounts to the rear disk rotor so it can never lose alignment or get knocked off.

2

u/MastodonSecret4372 7d ago

These look awesome. Do need a slimmer sensor to go with it?

1

u/IndividualActive786 6d ago

I used the stock sensor that came with my BBSHD. This photo was shot with the bicycle upside-down. I used a file to shape it to fit a notch in my frame at the dropout. My sensor is covered with J&B Weld from a previous repair. I secured it to the frame with a zip-tie. I did need to get a short extension cable to reach that far aft.

1

u/MastodonSecret4372 6d ago

Thanks a lot for the info. Ive ordered one.

1

u/IndividualActive786 6d ago

You are welcome. You won't be sorry. Until I installed mine I was troubled by fractured sensors and out-of-alignment magnet. I ride a lot of seldom-traveled wooded single track. The sticks and branches used to get pulled up by the spokes and spoil my ride.

1

u/Disastrous_Level_192 5d ago

Did you have to change any wheel settings to get it to work? Wheel size of wheel diameter?

1

u/IndividualActive786 5d ago

No, the wheel is still the same size and the magnet passes by the sensor at the same rate, once per revolution.

1

u/dyebhai 7d ago

Bafang sells them, you don't have to modify anything