Changed my mind about my Gear Shift Sensor today - Disconnected it.

[PedalUma]

I thought the Luna has a gear sensor under the battery. I have never needed one. Just ride like you have a manual transmission.

 

[tomjasz]

6/22/2014

Gear Sensor for Bafang BBS02 Mid Drive *+ other mid-drives?*

First off, I would like to tank Tom (tomjasz) for sending me this handy little gadget. Apparently he ordered one from the manufacturer (http://gearsensor.com/) and they asked him to pass some along to a few ES members. Tom was kind enough to offer me one, and I am glad I obliged. What is it...

endless-sphere.com

 

[Gionnirocket]

Speaking to "Kathy" at Frey Bike, she said 3 days to ship from CA warehouse. I ordered it on Friday. Should be here by next week. Yes, I have a friend that has a CANBUS Sondors Rockstar. He installed a UART controller and display. The controller assembly came pre-installed as one piece mounted with the side motor casing. He did need a new wiring harness and display.

For curiosity sake I sent an email to Frey... Here's their response.

"Savannah ULTRA CC is equipped M620 1000W mid-drive motor, and it is UART protocol only.
Unlike the CAN protocol, most riders prefer the UART protocol, which is easier to operate and reset.

May I know which protocol you prefer? UART or CAN protocol?"

 

[Tom@WashDC]

For curiosity sake I sent an email to Frey... Here's their response.

"Savannah ULTRA CC is equipped M620 1000W mid-drive motor, and it is UART protocol only.
Unlike the CAN protocol, most riders prefer the UART protocol, which is easier to operate and reset.

May I know which protocol you prefer? UART or CAN protocol?"

Sweet! I saw that they had the programming cable on their site for sale so I figured as much.

 

[J. Dub]

The gear shift sensor throttle cut on my BBS02 is too short. I now engage slightly my front brake to cut the motor until the gear change is finished. Work very well for me.

Unfortunately, the m620 doesn't have a brake sensor

 

[J. Dub]

Good point Al. I did drop my delay stop or decay whichever it was, down to zero on both bikes so the power would shut off as soon as I stopped pedaling. UART protocol on both controllers.

Very good info to know for when my Z1 comes in. Thank you.
@Tom@WashDC do you know if the UART tuned up M620 from Luna comes w/ front and rear light inputs? I see on greenbikekit it's an option I can add and was hoping the Z1 I ordered would come w/ the ability to add them.

 

[keithj69]

Unfortunately, the m620 doesn't have a brake sensor

Huh? Then why do they sell one? And am I imagining the motor cutoff with my m620 ebike?

 

[juggernaut]

Unfortunately, the m620 doesn't have a brake sensor

This suggests otherwise. That is the brake sensors connect via the EB BUS cable loom. My Frey Beast cuts power when I apply the brakes (Magura MT5e brakes).

 

[Tom@WashDC]

Very good info to know for when my Z1 comes in. Thank you.
@Tom@WashDC do you know if the UART tuned up M620 from Luna comes w/ front and rear light inputs? I see on greenbikekit it's an option I can add and was hoping the Z1 I ordered would come w/ the ability to add them.

As I recall there are connections for front/rear lights (no brake activated light). I've taken the motor out a few times and the light connections are present

 

[Tom@WashDC]

Unfortunately, the m620 doesn't have a brake sensor

There is a brake sensor plug.

 

[khaoskosmos]

This suggests otherwise. That is the brake sensors connect via the EB BUS cable loom. My Frey Beast cuts power when I apply the brakes (Magura MT5e brakes).

My Frey Beast is the same. I find that the motor still runs for a bit after stopping peddling, and it ignores the shift sensor during this overrun (perhaps I need to adjust something?).

 

[smorgasbord]

My Frey Beast is the same. I find that the motor still runs for a bit after stopping peddling, and it ignores the shift sensor during this overrun (perhaps I need to adjust something?).

No, the Bafang Ultra motor is normally set for at least some run after pedaling stops. The KeepCur(%) in the SPDxx table on the Torque Page is normally what people associate with this behavior. There is also a KeepCurrent(%) on the Pedal Page, but that's most likely an unused left-over from Bafang extending the BBSxx software to handle the torque sensing Ultra. I think if you have zero overrun you'd have a jerky ride, maybe with the motor cutting out sometimes during normal pedaling.

 

[Rome]

I've experiment with shift sensor. It works good under throttle.
It's flawless from 7-11th top speed 30 -35 mph. My bafang m620 has motor over run too on lower gears when trying to fineness a sharp nice and easy turn sometimes I over shoot it.

 

[PedalUma]

I like 15 degrees of pedal rotation for initiation of power and for cessation of assistance. I just back off on pedal pressure slightly when shifting. 15 degrees is immediate yet not lurchy. It also means that I can rest my foot on the pedal at a stop then start with a bit of rotation with pedal pressure.