Bafang Hall Effect replacement

micart671 · Dec 18, 2011

G'day,

After successfully replacing a hall effect sensor from one Bafang to another i would like to source some replacement sensors.
Can anyone tell the correct type and or part No.s for these little suckers? eg AH1751 HALL EFFECT LATCH

Any help will be greatly appreciated.

Cheers,

Philistine · Dec 18, 2011

I think generally people recommend using Honeywell SS41 sensors.

You can get them from Digikey, but I recently got some (these are not Honeywell, so I actually don't know what their temperature specs are like) from Little Bird Electronics (in Aus), and they were good and delivery was fast etc..:

http://littlebirdelectronics.com/products/hall-effect-sensor

Love your avatar by the way, I have always thought a postie bike would make a great conversion.

Cheers, Phil.

dnmun · Dec 18, 2011

the labels on the chinese parts are not the same as what we see with western stock numbers, but usually the hall sensors have 41 printed on them, but they cannot print the full SS41 or they would be in violation of trademark infringement laws.

micart671 · Dec 22, 2011

Thanks,

That info helps.
Phil... The Honda E-Mail or Post-E (as it is now affectionately known), is fantastic. Unfortunately i have found recently that thundersky's don't like being laid on the flat side. Apparently the electrolyte does eventually drop due to gravity and exposes part of the anode/cathode and reducing the range considerably. This doesn't affect performance so much as range. I have the controller limited at 60% to prevent whiplash.

Cheers 8)

dnmun · Dec 22, 2011

is the japanese postal service selling the used postal ebike? do they buy a new one every year and trade in the old one like they do here?

NeilBarr · Dec 25, 2011

hi micart671, looking for some tips on fitting those halls, what positions are they in? iv got a senor less model that needs them fitted. Got the same honeywell sensors. just need to know where to put them!

fechter · Dec 26, 2011

Here's the datasheet for the AH1751 sensor:
http://www.diodes.com/datasheets/AH1751.pdf

I think the SS41 will work as a replacement. I'd suggest checking the pin configuration to make sure the wires get hooked up right.

NeilBarr · Dec 26, 2011

thanks for that, i had figured out the wiring of the sensors, just trying to work out where to put them inside the motor, and how far apart.

micart671 · Dec 28, 2011

Sorry Neil, I have no idea, only to say that it will possibly depend on the type of controller.
The bafang motor has a wedge shaped cutout where you place the halls in. There is only one configuration you can use because as you see in the photo you can't place them in between the other stator positions.

Bafang Hall Effect replacement

micart671

100 mW

Philistine

100 kW

dnmun

1 PW

micart671

100 mW

dnmun

1 PW

NeilBarr

10 µW

fechter

Administrator

NeilBarr

10 µW

micart671

100 mW

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