Non Bio - Electronic repair needed please

[therecklessengineer]

Given that there appear to be only two big transistors, I'd hazard a guess and say it's a DC motor. In which case, a £20 controller off the bay would work fine.

You'd probably want to confirm that before buying one though.

[K.H]

I will take a pic of the motor tonight

[K.H]

Given that there appear to be only two big transistors, I'd hazard a guess and say it's a DC motor. In which case, a £20 controller off the bay would work fine.

You'd probably want to confirm that before buying one though.

Do these pics help?

[therecklessengineer]

How many cables go to it?

[K.H]

Two i think, but will confirm

[knighty]

if it's 2 it'll be DC

if it was 3 phase you'd have 3 bigger wires and then 5 small wires (for the hall/position sensors)

does it have a throttle, or is it just pedal assist ?


throttle is easier, but a new pedal sensor is no biggie either (to match new controller)

probably easier if you have the bike to hand to look at... both either of these should fit

http://www.ebay.co.uk/itm/Electric-Bike-Power-Pedal-Assist-Sensor-PAS-Voltage-Mode-E-Bike-Assistant-Set-/261947134809?pt=LH_DefaultDomain_0&hash=item3cfd441359

http://www.ebay.co.uk/itm/Electric-Bicycle-e-Bike-PAS-Pedal-Assist-Sensor-easy-fit-/111681836795?pt=LH_DefaultDomain_3&var=&hash=item1a00c196fb

you also need to know the battery voltage, so you can get a controller to match (about £20 delivered from ebay)

[K.H]

Two wires, 24V and it has pedal assist and throttle, quite happy to do away with the pedal assist

These are all the wires on the bike



That accounts for all the wires on here



Except for this which also plugs into it



Only strange thing i have spotted is that the battery wires, 2 thick red, 1 thick black plug into 2 thick black 1 thick red?

[K.H]

Bob, this is what i have on the bike



This is the controller



Specification:
brush motor controller
Suitable Voltage: 24v
Match Motor: 24V 500W
Current Limit: 28A+-1A Short Voltege
Protection: 20V+-0.5V
Speed Regulator 1-4 V(Throttle )

Wires Interface Definition:
Battery :Thick Black (Power Negative) /Thick Red (Power Positive)
Motor :Thick Yellow (Motor Negative) /Thick Blue (Motor Positive)
Ignition Switch :Thin Red(VCC)/Thin Blue
Indicator : Thin red (Indicator power output) /thin black (indicator negative)
Brake :thin yellow (Brake signal)/thin black(Negative Power)
Speed governor :Thin blue(Speed handlebar Signal input) /Thin black (Negtive Power) /thin red(5V Positive Power)
Charge Port : Thin red (charge input power Positive) /thin black (Power negative)
Brake Light: Thin red (power Positive) /thin black (Power negative)

Pedelec unit
Three wires

[therecklessengineer]

That's definitely a DC motor.

A cheap controller from eBay should do the job nicely.

[K.H]

That's definitely a DC motor.

A cheap controller from eBay should do the job nicely.

The one shown is a cheapy i have bought, just not sure which wires on it go where 

[kamaangir]

Brake light and indicator you can ignore if your bike doesn't have them. Because they are generic they have connections on them that may not be on your bike.

You have the basics there. That blue component maybe a shotkey diode. It stops arcing when connecting and disconnecting the battery.

I would connect the motor, brakes, throttle and last battery and give it a whirl.

[K.H]

Battery :Thick Black (Power Negative) /Thick Red (Power Positive)     i have 2 red 1 black? solved i think, see below
Motor :Thick Yellow (Motor Negative) /Thick Blue (Motor Positive)
Ignition Switch :Thin Red(VCC)/Thin Blue       no ign switch so connect together?
Indicator : Thin red (Indicator power output) /thin black (indicator negative)      ignore
Brake :thin yellow (Brake signal)/thin black(Negative Power)
Speed governor :Thin blue(Speed handlebar Signal input) /Thin black (Negtive Power) /thin red(5V Positive Power)    i only have 2 wires from throttle
Charge Port : Thin red (charge input power Positive) /thin black (Power negative)      battery state?
Brake Light: Thin red (power Positive) /thin black (Power negative)    ignore

[K.H]

Just had a closer look, one of the battery positives goes to the motor, so i think i ignore that and just connect the motor to the controller

[therecklessengineer]

Speed governor :Thin blue(Speed handlebar Signal input) /Thin black (Negtive Power) /thin red(5V Positive Power)    i

This is troublesome. The simple solution is to get a new handlebar speed thingy. Electronic solutions are complex and will require messing around with resistors and things. Could probably work it out - how handy are you with a multimeter?

[K.H]

Speed governor :Thin blue(Speed handlebar Signal input) /Thin black (Negtive Power) /thin red(5V Positive Power)    i

This is troublesome. The simple solution is to get a new handlebar speed thingy. Electronic solutions are complex and will require messing around with resistors and things. Could probably work it out - how handy are you with a multimeter?

Will buy new throttle!