BBS01 brake cutout working on throttle, not on PAS

[mfj197]

Here's a weird one. I've nearly finished my BBS01 install and I've used brake sensors for hydraulic brake levers. When I use the throttle the brake cutouts work fine, but not when using PAS. If I'm turning the crank (the bike's up on a stand) I can pull the brake lever and the motor continues to fight against the brake. The sensors are obviously working fine as when using throttle and touching the brake the motor cuts out instantaneously.

Has anybody else seen this behaviour? It's not something that can be adjusted in the programming as far as I'm aware (I have a cable I can use if necessary).

Michael

 

[Geebee]

Just to confirm, so if you pull the brake on then turning the throttle does nothing?

 

[mfj197]

Yup, exactly. If I have the brake pulled and turn the throttle then nothing, but if I have it pulled and turn the cranks the motor starts.

 

[mfj197]

Just realised I hadn't closed this issue out, for those who stumble across it when searching. It was the hydraulic brake sensors that were faulty. It seems an early batch had a few issues. Eclipse Bikes (who've been great) took my motor back and were able to replicate the issue with their early batch of sensors. When they used a more recent batch it worked fine. The motor is now installed together with brake sensors and it works well. Some other members have had the same issue - Sylvester and Spotty Dog in this thread and also Scott_J who received his in May this year I believe (after Eclipse had identified the problem).

Full details of the problem, symptoms and how to diagnose follow.

Michael

Whilst the rear wheel spins the red light on the wheel sensor flashes whenever the magnet passes it. It should always do that. On mine, whenever I pulled the brake lever (front or rear) the red light stopped flashing even though the wheel was still turning. Also the brake cutout stopped the motor when using the throttle, but didn't stop the motor when it was activated through turning the pedals. If I carried on turning the cranks or cycling and pulling the brake an error would appear after a short while because the bike knew it was going along but couldn't read the speed sensor.

There are a few easy ways to check:

• Raise the back wheel off the ground (even better, put the bike on a stand) and spin it. The red light on the speed sensor will flash. Now pull the front brake. If the red light stops flashing with the rear wheel still turning then the brake sensors are faulty.
• Alternatively, again with the bike in a stand run the motor with throttle and pull the front brake (whilst still holdiing the throttle open) - the motor should stop. Now release everything and start turning the cranks so the motor kicks in. Pull the front brake whilst turning the cranks - if the motordoes not stop then the brake sensors are faulty. Furthermore if you keep turning the cranks with the front brake pulled for a few seconds an error will show up on the display.
• The second test can actually be done whilst riding the bike - if faulty the brakes will cut off power when using the throttle but won't cut off power when you are pedalling