Wiring in a thumb throttle. Help ?

[Brelades]

Just bought a folding electric bike for my wife. It needs to be pedalled for the motor to assist, which is a shame as her knees are not too good, and I thought the twist grip meant a throttle, not a gear change. So I have ordered a cheap thumb throttle which has three wires. I don't know how to fix it, being well past my three score years and ten, but a fairly experienced bodger. I would like some advice if anyone can help.
The bike is an Avocet Viking, selector switch on the left, Revoshift gear selector on the right. Thanks in advance. Pete.

 

[Alan Quay]

Just bought a folding electric bike for my wife. It needs to be pedalled for the motor to assist, which is a shame as her knees are not too good, and I thought the twist grip meant a throttle, not a gear change. So I have ordered a cheap thumb throttle which has three wires. I don't know how to fix it, being well past my three score years and ten, but a fairly experienced bodger. I would like some advice if anyone can help.
The bike is an Avocet Viking, selector switch on the left, Revoshift gear selector on the right. Thanks in advance. Pete.

First, you'll need to confirm that you have a throttle input on the controller. They are mostly 3 wires (+5v, 0v and signal).

Take some pics of the controller connectors and post them here....

 

[Nealh]

As Alan say's if the wiring is present from the controller then they will have a terminal block connected to them. Pics will help, colours may vary but quite often Black/Red/and any other colour for the signal is used.

 

[Brelades]

Thanks for replies. It's a cheap controller from China, not yet received, silver and black with a cable, three wires with spade connectors, red, black, green.
Under a fiver on e-bay, so I don't mind if it doesn't work. Weather is so awful here in Cornwall that we are in no hurry to try out the bike.
I am thinking of buying another small folder for myself, as we have down sized our motorhome to a camper van and my big and beautiful hub motored Tonaro is way too big to fit inside or carry. Time to put it on E-Bay too, I think.
Peter.

 

[Brelades]

Just checking in case of replies and wondered whether Neal and Alan mean the control already on the bike or on the hand control ordered. On the bike, the control has off and on, lights for battery state, and a "1-2-3" setting for level of power assist but certainly no throttle control input. The awaited controller has a cable with the three wires. My problem will be where to put them.

 

[anotherkiwi]

Controller = metal box where the wires from the LEDs on your handlebars go to.

Throttle = throttle you have ordered

On the handlebars you either have a LED system like you with settings buttons and LEDs for status or an LCD with buttons for settings the status being shown on the LCD screen.

A motor controller is the magic box where the instructions from the LED or LCD buttons are turned into something the motor can understand

Hope that clears things up a little

 

[flecc]

I don't know which model you have. If it's the E-Go with suspension, the controller is the black box under the seatpost mounted battery.

If it's the Easy model, the controller would appear to be inside the tiny battery case.

Additional Viking Avocet e-bike models page link.
.

 

[Nealh]

Thanks for replies. It's a cheap controller from China, not yet received, silver and black with a cable, three wires with spade connectors, red, black, green.
Under a fiver on e-bay, so I don't mind if it doesn't work. Weather is so awful here in Cornwall that we are in no hurry to try out the bike.
I am thinking of buying another small folder for myself, as we have down sized our motorhome to a camper van and my big and beautiful hub motored Tonaro is way too big to fit inside or carry. Time to put it on E-Bay too, I think.
Peter.

Reading your posts makes me think you are crossing your wires here ? AK has put it in layman's terms. You need to post pics of the items for us to see.
The thumb throttle on modern integrated systems are hard wired in to the LCD display or an all integrated wire harness. The after market or kit thumb throttle with the 3 wires which match the description I gave is connected to its mate in the metal controller box usually mounted some where on the bike frame or near the battery, this controller will have several other wired connections including the battery feed, motor phase, brake cutoffs if fiited, pedal sensor( PAS), a speed sensor and the lcd/led connection. Usually the PAS and throttle colours are the same.

 

[Nealh]

Just checking in case of replies and wondered whether Neal and Alan mean the control already on the bike or on the hand control ordered. On the bike, the control has off and on, lights for battery state, and a "1-2-3" setting for level of power assist but certainly no throttle control input. The awaited controller has a cable with the three wires. My problem will be where to put them.

Your on and off and lights control is the LED/ assist display, the hand control ordered is a thumb throttle.

 

[Alan Quay]

Nealh is correct, you have confused the 'controller' with the throttle/light switch.

Normally, electric bikes comprise the following components:

Motor, battery, controller and sensors (some/all of Pedal rotation, throttle, brake, speed, torque).

The controller is the brain in the middle that connects the battery power to the motor, based inputs given by the sensors. Necessarily, it will have a load of wires coming out.

That what we need a photo of.

 

[Brelades]

Thanks, gentlemen. I have indeed got the box full of wires below the battery above the back wheel behind the seat post. As I am not expecting delivery from China to be rapid, may I ask if, when it does arrive, you would be kind enough to advise me on the connections. I will take and hopefully post pictures of the inside of the neath-battery box. The controller comes with a fairly long flex which should be O.K. to follow the existing wires from handlebar to seat post.
The model is the E-Motion, the non rear sprung model. Actually had a dry day yesterday and gave it a quick try. Seems pretty good, but not too powerful when it comes to more than a slope. Can't expect more at the price, though, and we use bikes when travelling in our camper van so try to avoid hilly areas.
Holland was the best. A country that actually gives intelligent care for the cycling population. Even found a few round-abouts where we actually had priority over cars ! And mostly flat....
I do appreciate your patience. Peter.