Erratic power assist

[MC21]

Hi, I have a Sduro Hard seven SL Haibike with a 250w yamaha motor 2016 model. It has without any obvious reason stopped delivering assist but it still kicks in at times. I have checked contacts under the motor and changed batteries in controller, no error messages are displayed. It has a black ped Bluetooth device under the motor, not sure what this is . (bought s/h).Trying to find a fault or broken wire. So far no luck. Battery has not exceeded 200 charges.

 

[Mike TowpathTraveler]

Googling around for this Black Ped chip and I find this: http://www.blackped.com/download/BlackPed_Manual.pdf Since you got your H-Bike second hand, all bets are off, but I suspect your troubles are with this chip.

I've never heard of this chip until now. Never saw it sold on Ebay over the past several years. Never heard it talked about on this forum.

I think if you remove it and reconnect the proper factor connections, your bike should be fine. If you are still dead set on a speed chip for your Yamaha, I can recommend the Pear Tune. I put one on my 2016 Haibike Full FatSix Yamaha PW motor about a year and a half ago and it works perfectly. Kat, the owner, is very proactive in answering any questions you might have. Good luck, let me know what you come up with. The Yamaha PW ebike drive is a tried and true performer.

This BlackPed seems to require some kind of BlueTooth application to set it up. Crazy and I can see why they are not a player on today's chip market....

 

[PedalUma]

It could be an internal sensor isn't consistently picking up. This sort of thing happens for example on bikes with wheel magnets when they are a little out of alignment or have crud.

 

[MC21]

Googling around for this Black Ped chip and I find this: http://www.blackped.com/download/BlackPed_Manual.pdf Since you got your H-Bike second hand, all bets are off, but I suspect your troubles are with this chip.

I've never heard of this chip until now. Never saw it sold on Ebay over the past several years. Never heard it talked about on this forum.

I think if you remove it and reconnect the proper factor connections, your bike should be fine. If you are still dead set on a speed chip for your Yamaha, I can recommend the Pear Tune. I put one on my 2016 Haibike Full FatSix Yamaha PW motor about a year and a half ago and it works perfectly. Kat, the owner, is very proactive in answering any questions you might have. Good luck, let me know what you come up with. The Yamaha PW ebike drive is a tried and true performer.

This BlackPed seems to require some kind of BlueTooth application to set it up. Crazy and I can see why they are not a player on today's chip market....

Many thanks for your help - Appreciate the input you gave . I will remove the device this week and fingers crossed.

 

[MC21]

It could be an internal sensor isn't consistently picking up. This sort of thing happens for example on bikes with wheel magnets when they are a little out of alignment or have crud.

Thanks, Ill check the alignment - think that is ok. Im pointing the finger at the blackped device.