Pinnacle Mercury Fault

supra3turbo

Just Joined
Aug 5, 2022
4
0
Hi All,

I am new to the forum and new to electric bikes.

I was given a Pinnacle Mercury E bike which worked fine the first time i used it, the next time i came to use it the little power up and down thing on the handlebar stopped working but the bike still worked electrically while peddling, then it stopped working all together.

I have replaced the Bafang ESC inside it, and it still doesent work, the only other thing i can immagine is the little handlebar controller with the power button and the battery power up and down buttons on it.

I was just wondering if anyone could point me in the right direction, before i go spending any more on it.

Thanks - Joe
 

Benjahmin

Esteemed Pedelecer
Nov 10, 2014
2,063
1,405
68
West Wales
Hi Joe,
Gonna need some photo's. One of the whole bike. One of the controller and the motor with any markings on them. One of the handlebar display. That should get us started.
 

supra3turbo

Just Joined
Aug 5, 2022
4
0
Hi There,

Here are the pictures i just took, its a new controller with a wire going to the 350w hub, a wire going to the hanndle bar controller, and another wire which i presume is a pedal/speed sensor wire or something.

Thanks - Joe
 

Attachments

Nealh

Esteemed Pedelecer
Aug 7, 2014
17,257
6,749
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West Sx RH
Pinnacle is an Evans brand but doubt they will know much about it except to charge and change parts out.
The pair of Red/Black wiring are likely brake sensors or the like, any pedal speed sensor whoul be 3 wires. The hub will have an internal speed sensor indicated at the motor connector by 9 pins.
Is there a cable exiting from the bottom bracket, if so it is likely a torque sensor bike.

If not I would be inclined to rip everything out and buy a KT controller kit with a nice lcd display for about £100 and have something where generic parts are easier to buy.
 
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supra3turbo

Just Joined
Aug 5, 2022
4
0
Ah i see, well i will try and get a replacement handlebar controller as that can only be the other thing thats causing it not to switch on, other than that I will replace the lot, just dont see why its not working all of a sudden its got to be the handlebar thing, the motor was still working whenn cycling for that one trip then it must have auto switched off then ive never got it to come back on because the handlebar thing is broken.

Thanks - Joe
 

Benjahmin

Esteemed Pedelecer
Nov 10, 2014
2,063
1,405
68
West Wales
The handlebar display and the controller have to be a matched pair in order to communicate to each other. So, they are usually bought as a pair to ensure this is so.
Lets get the terminology straight so as to avoid confusion. Your second photo is the display. Your 4th photo is the controller.

Have you tested for voltages anywhere? What is the measured battery voltage fully charged? Are you getting that voltage at the controller?
Just buying parts on assumption can get very expensive and time consuming.
If you want to go that route then Nealh's suggestion of the KT kit is probably the most cost effective. He's got huge experience with those and will be able to help throughout.
 

supra3turbo

Just Joined
Aug 5, 2022
4
0
In all honesty, i haven't tested for voltages as my multimeter i have here packed up repairing a 550w corsair PSU, forgot to swap the leads back after testing amp draw on my motorbike and blew it..... stupid mistake but i will go to the unit today and get my multi meter, i bought the exact same controller that was on the bike, and next i will replace the display on the handlebar, i dont have a spare £100 at the moment to replace the lot or i would do that just for convenience.

I will get my other multimeter today from the unit (im installing a dual charge kit and solar on a VW transporter) but thats nearly finished and i will test what voltages i have at the battery and controller.

thanks all - Joe
 

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