Mounting disc brakes on BLDC HBS36 or HBS48 500W and hall sensors

[eneuro]

Hello,
I'm interested in this Golden Motor bldc-500w-36v-hbs36 front or rare based on whether and which of them have ability to attach brakes mounted directly on motor?
Is it possible mount ring brakes on BLDC HBS36 or HBS48 500W?
Another concern is bearings used in those motors above-which is the typical RPMS they can rotate without overheating?
I'd like use 3 such motors in research project, so this information below how to use Hall sensors was very usefull,
but also need to ensure those BLDCs have Hall sensors like described in this thread below.
http://goldenmotor.com/SMF/index.php?topic=3151.0

[Bikemad]

Hi andto the forum.

The HBS motors are equipped with three 5V hall sensors just as described, but only the rear motor can be fitted with a brake disc as shown in the User Guide.

I have no idea what the speed rating for these bearings is, but they are unlikely to be spinning above 500rpm on an ebike.
These hubmotors are designed for low rpm operation, and would probably not be balanced well enough to run at really high rpm, so I expect it would be the dynamic vibration from the motor that would limit the maximum rpm, rather than the bearings overheating.

Alan
 

[eneuro]

Thank you very much for help.

User gide will be very usefull.
In another  thread- I've mentioned above- you explained also very well where those Hall sensors are located (its offset in degrees based on number of 51 coils and 46 poles in this HBS hub) and its type in oryginal GM motors as unipolar activated when south pole is passing them, so it was exactly what I wanted to know, while I'd like to use them in my research project in my own controler circuit.
I've got only one question more for the moment:

Q: Is it possible in those HBS motors (I'm interested in HBS36 or HBS48 rear versions 500W-1000W) add additional 4th power cable (lets call it 0) to the centre of the star where all 3 phase coils are connected together?

As I know there are 3 cables for GM HBS motor power supply from controler and 5 pins for Hall sensors (2 for its 5V power supply and 3 Hall outputs).

It would be nice for me to be able have this one more (black 0) power supply cable to be able switch ON/OFF only selected 1 phase - not 2 phases at once like it happends in bipolar H bridge drive...

Thanks in advance
Szan