Recent content by Spaceball

Did some more testing on the weekend and can confirm that the crank speed of the BBS01 is limited by battery voltage. The battery was around 30% capacity so I could do some upper and lower battery voltage testing. So the results are. These are approximate battery voltages measured by an external...

My normal cruise speed is around 32-34kmh with a bit of a tail wind I am at 36-38kmh with less then 200W battery power on the mid drive. so the 201rpm version is long gone by then. Using the motor simulator and setting the current to 7A it will run nicely up at the top end and a bit sluggish...

Sounds like a plan. I think I will be going a cute Q100C (cassette) 328 rpm on 36V (have the battery from the BBS01 build). It will be 32H with a Mavic rim from CRC Might try one of the BMS S06S controllers...

Well after 1200kms on the BBS01 I think it is time to built a low power hub motor setup. There are a few things that I do not like about the BBS01 setup for my flat fast (32-36Kph) commute. I have tried to work through these by changing the software. Also there are a few that issues that are...

BBS01 - 250W is the one that I have. I will do some testing on the weekend checking if there any difference in crank RPM between a fully charged battery and 1/2 full.

Thanks Cell_man. Is there any documentation on motor speed @ rated voltage for the BBS series on motors? I also feel that the power tapers too quickly not to be affected by the controller. Know any good controller where I can add a few extra degrees of timing at the higher RPM? Re-wind the...

Totally agree. That is why I am looking for a cheap controller for the testing. I believe that the motor should handle a few more RPM. It still pulls strong at the current max RPM and doesn't feel like it has fallen off the efficiency curve. My normal ride home is 20Km and I am pulling 230...

Thanks for the heads up on the other forum. Most on here want more power where I am after more crank RPM at low low power levels to meet the 200W Oz limit. In terms motor RPM I am looking at crank RPM of around 100, max. So not a huge speed increase. I haven't seen a power curve for these motors...

Will try an external controller first.

Both the "speed limit" and "keep current" are at 100%. I believe that I am at the speed limit that the software is set for hence the reason to try an external controller. They might help a little then I might have to up the voltage. That will be the last resort due to the expensive 36V battery I...

Read that thread and Kepler even ran into some limitations using the Bafang controller. These limitations are the ones I am trying to avoid by going external. The stock controller limits to power to low in the cadence range for me. There is no setting in software to increase this. I have maxed...

I would like to experiment with an external controller on my BBS01. There are a few features of the standard BBS0X controller that can't be changed in software and I am hoping these will be eliminated by going external. Also I can then run CA for power controlling. What I am looking for is a...

Well a little testing today. While I am only running 6A current limit at the controller with all the other settings maxed power starts to be limited at about 85 crank RPM. By around 90 RPM there is no assist. It was the same either using the throttle or PAS. Not sure if disconnecting the PAS...

I am just not happy with where the power tapers off. I normally spin around 90 and in to the high 90s when I want a bit more power. By then the controller has already backed off the power. I am not a grinder and with the extra wide Q-factor of the BBS units it is not good for the knees if you...

But will this allow the motor to spin faster (higher cadence) before the controller starts to limit power? I currently have a throttle and the PAS connected. Mine is a BBS01 and I also have it limited to low power (6A @ 36V) due to our restrictive laws. Other option would be to replace the...