Upgrade from King meter 790 to LCD Display and bike computer

[pgrange]

Hello all

I have a Kudos Secret which comes with a King Meter 790. Is it possible to upgrade to a LCD display preferably one with integral bike computer? I presume that the controller also needs upgrading ?

Other than King Meter what other options are there . Android app? And lastly does anyone know what make controller the Kudos has?

Many thanks

Peter

 

[trex]

you can't.
LED panels use analog signalling, LCDs use digital signalling.
If you absolutely want to change, you'll have to change the controller too.
If you only want the additional functions (speedo, milometer), fit a cycle computer.

 

[Deleted member 4366]

Pull the controller out and have a look at it. I haven't done it, but I guess that a S06Sand S-LCD3 or 5 from BMSBattery would work. Show us a photo of your controller.

 

[pgrange]

Afternoon d8veh. What do you think?

All the best
Peter

 

[Deleted member 4366]

I wanted to see the wires really.

 

[pgrange]

Hello d8veh. I took these earlier . Not very clear but maybe of some use ?

Not in the position to remove it completely at the moment . Can do later .

Many thanks

Peter

 

[Deleted member 4366]

It's still not enough to see. What i was looking for was whether it's a sensored or sensorless motor. How many wires are in the motor cable? Are there some thin ones as well as the blue, green and yellow thicker ones? If so, how many? Is there a spoke magnet on either wheel?

 

[pgrange]

• There are 3 wires going to the motor itself and 2 wires going to a sensor on the crank. There are no magnets on the wheels. The motor is a 8 fun if they helps.

Peter

 

[pgrange]

OK so I pulled the controller out this morning. Hopefully this makes it clearer.

 

[Deleted member 4366]

OK, that's a sensorless motor, so you need the S06P and the S-LCD3 or 5. Before ordering, check the size of your controller. The S06P is 31x51x86mm. make sure it's going to fit. Your connectors are 2 wires for the LED panel on'off power, 2 wires for the LED panel ground and pedal assist level, 3 wires for throttle , 3 for pedal sensor, 3 for the motor, 2 for the battery power and 2 for the brake switch (x2?). That's pretty standard wiring.

The connector on the new LCD is quite wide (5 pin) and might be difficult to thread through, in which case you need to remove all the pins from the body and then reinsert them after threading the cable through. The throttle connectors would have to be cut off and solder the wires together. You need to order the wheel speed sensor, so that you get a speed reading on the LCD and you need to cut off the brake connectors and join the wires directly. Finally, it would be a good idea to order a pedal sensor in case your one is not compatible. It'll probably be OK, but for the sake of a couple of quid, you'll be covered.

https://bmsbattery.com/ebike-kit/545-s06p-250w-torque-simulation-square-wave-controller-ebike-kit.html?search_query=s06p&results=30

https://bmsbattery.com/ebike-kit/740-s-lcd5-lcd-meter-for-s-series-controlers-ebike-kit.html?search_query=S-lcd5&results=7

https://bmsbattery.com/ebike-parts/49-five-poles-pas-pulse-padel-assistant-sensor-ecitypower-parts.html

https://bmsbattery.com/ebike-kit/550-speed-sensor-ebike-kit.html

 

[pgrange]

d8veh thank you very much for that . That's exactly what I was looking for!
Any merits in a sine wave controller ?

Appreciate your time greatly .

All the best

Peter

 

[anotherkiwi]

Any merits in a sine wave controller ?

Yes, much quieter and smoother power delivery.

 

[pgrange]

So presumably the more magnets on the pas the better?

 

[anotherkiwi]

So presumably the more magnets on the pas the better?

Yes I upgraded from 8 to 12 magnets and you can feel the difference especially in startup which takes much less rotation.

 

[pgrange]

anotherkiwi thanks for that.

All the best

Peter

 

[Deleted member 4366]

All the readily available sinewave controllers are for sensored motors, so you're out on that one.

 

[pgrange]

D8veh

Aah I didn't know that! Just about to place my order.

Thanks again!

 

[Deleted member 4366]

Don't forget to check the size before ordering.

 

[pgrange]

You mean the physical size of the controller?

Peter

 

[Deleted member 4366]

Yes. BMSB give you the size of the S06P.