Here you can find the right settings for your Sondors eBike generic LCD!
KT LCD3 settings for Sondors
buy a LCD here: klick
Max. Speed: leave it, or set it to 25 km/h
Wheel Diameter: 29 for 4.9" tires, 28 for 4.0"
Metric and Imperial Units: your choice
P1 = 100 (Motor Characteristic Parameter Setting Mode, 1 - 255)
P2 = 6 (Wheel Speed Pulse Signal Setting Mode, 0 - 6)
P3 = 1 (Power Assist Control Mode, 0 or 1)
P4 = 0 (Handlebar Startup Mode, 0 or 1)
P5 = 12 (Power Monitoring Mode, 0 - 40)
C1 = 01 (Power Assist Sensor and Parameter Select Mode, 00 - 07)
C2 = 0 (Motor Phase Classification Coding Mode, 0 - 7, 0:sin wave)
C3 = 8 (Power Assist Ratio Gear Initialization Mode, 0 - 8 ) (C3=6 WARNING! Bike starts running forward on it’s own at power up!)
C4 = 0 (Handlebar Function Setting Mode, 0 - 4)
C5 = 10 (Controller Maximum Current Adjustment Mode, 00 - 10)
C6 = 3 (Backlight Brightness Adjustment Mode, 1 - 5)
C7 = 1 (Cruise Function Setting Mode, 0 or 1)
C8 = 1 (Motor Operating Temperature Display Mode, 0 or 1)
C9 = 0 (Startup Password Setting Mode, 0 or 1)
C10 = n (Automatically Restore Default Setting Mode, n or y)
C11 = 0 (Attribute Selection Mode, 0 - 2)
C12 = 4 (Controller Minimum Voltage Adjustment Mode, 0 - 7)
C13 = 0 (Brake energy recovery - recuperation - only works with the corresponding controller, 0 - 5)
C14 = 2 (Coordination of support levels, 1 - 3, 2 = standard)
(description of the C parameters follows)
Step by step / Details
What you should now to set up your KT LCD3 display:
Under power off status, hold the „power“ button long, the meter is turned on. Within 5 seconds after boot-up, hold „up“ and „down“ simultaneously for about 2 seconds. Now you are in the settings menu.
(between each setting parameter press „power“ to save and to get to the next parameter)
Max. Speed: leave it
For Europe: set it to 25 km/h to be on the legal side. Wheel Diameter:
set it to what it is: 29 inches Metric and Imperial Units:
your choice After finishing metric/imperial unit settings, the speed and mileage units stop flashing. Within one minute after stoppong flashing, hold „up“ and „down“ simultaneously for about 2 seconds to enter the P parameter settings environment.
Need values for our motor are (http://www.szbaf.com/en/components/component/motor/rm-g06350d.html):
Cadence (Pulses/Cycle) 6/1 Reduction Ratio 1:5 Magnet Poles 20 P1 Motor Characteristic Parameter Setting Mode
P1 is motor characteristic parameter setting mode. P1 = motor gear reduction ratio x number of rotor magnet pieces, just rounding if there’s any decimal.
Sondors: Ratio 5 x 20 Magnet Poles = 100 = P1
P2 Wheel Speed Pulse Signal Setting Mode
P2 is wheel speed pulse signal setting mode. If wheel generated 1 pulse signal by a revolution, P2 should be set as1. If wheel generated 6 pulse signals by a revolution, P2 should be set as 6. If users didn’t configure the pulse signal system, and then P2 parameter setting can be 0. The setting range of P2 should be between 0-6.
0 : motor hall sensor only (speed is only shown while motor is working)
1-6: Pulses per Cycle
Sondors: Cadence (Pulses/Cycle) 6/1 = 6 = P2
P3 Power Assist Control Mode
P3 is for power assist control mode, when P3 parameter setting is1, power assist control mode is gear 5 of “imitation torque control” mode, when P3 parameter setting is 0, power assist control mode is gear 5 of “speed control” mode. P3 parameter needs to be determined according to the distributed function of the controller, its setting range is 0 or 1
Sondors: P3 = 1
P4 Handlebar Startup Mode
P4 is handlebar startup mode. When P4 setting is 1, indicating the handlebar is under
“non-zero startup” mode, namely, the handlebar can be effective only after startup the
foot power assist. When P4 setting is 0, indicating the handlebar is under “zero startup”
mode, the motor can be startup by the handlebar directly. P4 setting range is 0 or 1
Sondors: P4 = 0
P5 Power Monitoring Mode
P5 is power monitoring mode, when P5 setting is 0, the power monitoring is the “real-time voltage” mode. Namely, it is the method to determine the battery capacity based on real-time battery voltage. When P5 equals to a specified parameter, the power monitoring is the “smart power” mode (this parameter is determined by the battery characteristics, ordinary 24V lithium is generally is 4-11, 36V lithium is between 5_15). P5 setting ranges from 0-40.
9 = 24 V
12 = 36 V
15 = 48 V
Sondors: 36 V -> P5 = 12
To exit the programming mode just hold „power“ some seconds.
After finishing P parameter settings, the P5 parameter stops flashing. Within 1 minute after stopping flashing, hold “up” and “down” for about 2 seconds to enter the C parameter setting environment.
C1 Power Assist Sensor and Parameter Select Mode
C1 is power assist sensor and parameter select mode.
C1 Quantum power assist sensors or similar products
00 5 magnet sensor
01 8 magnet sensor
02 10 magnet sensor
03 12 magnet sensor
Power assist sensors from other manufacturers
Sondors: C1 = 02
C2 Motor Phase Classification Coding Mode
C2 is motor phase classification coding mode. It is served as identification parameter of different phases of the motor when using sine wave drive and the default value is 0.
When C2 setting is 0, indicating that the used Quantum motor phase is an ordinary one.
When the setting is a certain value, indicating a particular motor phase is used. C2 setting range is 0-7.
Sondors: C2 = 0
C3 Power Assist Ratio Gear Initialization Mode
C3 is initialization mode of power assist ratio gear. The setting range is 0-8 (gear).
When C3 setting is 0, the meter is switched on, and the power assist ratio is at gear 0. When the setting is 1, the meter is powered on and the power assist ratio is at gear 1, and so on.
Sondors: C3 = 8
C4 Handlebar Function Setting Mode
C5 Controller Maximum Current Adjustment Mode
C6 Backlight Brightness Adjustment Mode
C7 Cruise Function Setting Mode
Activate the Cruise Mode: C8 Motor Operating Temperature Display Mode
C9 Startup Password Setting Mode
C10 Automatically Restore Default Setting Mode
C11 Attribute Selection Mode
C12 Controller Minimum Voltage Adjustment Mode
C13 Brake energy recovery - recuperation - only works with the corresponding controller
C14 Coordination of support levels
(C Parameters are following some time)
Want a complete manual? (GENERAL Manual - not special for Sondors) Here you go: KT-LCD3 General Manual.pdf (to view/download you have to be logged in)
By Simon Ruane
i just crashed my sondos thin. the crash broke one of my brakes: see picture.
and now i need a replacement. most links to brakes here are to american shops. can somebody send me some links to brakes from european shops, because i don´t want to wait so long for the new ones. which specs do the brakes need to have that they would work for the sondors thin?
ps. this post is all in lower case, because it hurts if i move my left arm
By Josh Wardell
My bike arrived yesterday! After the momentous task of unboxing, and then assembly, first step was brake adjustment. The rear brakes were only rubbing in one spot and easily fixed by bending the disc slightly. The front brakes were continuously rubbing, and thanks to the excellent videos I adjusted them with a business card and squeezing to center them. The wheel now spins freely. But as I close the caliper, the pads are grabbing on all the holes on the disk themselves and making a very disturbing clunking and grinding sound. If you spin turn the wheel at that point you can feel it grab at each hole. I repeated the process a few times with no luck on a nice smooth grip. Any ideas what needs to be adjusted? As always, a video is worth a million words:
written by Mike Ritchie – B/Y Storm e-bike owner
Here are a few pictures showing the "no power" issue caused by a brake switch being
triggered. If you've charged your battery, inserted it correctly and have your battery
switch turn to "on", and you confirm that the LED lights on your handlebar throttle
illuminate, BUT you don't get power (or intermittent power) the issue is likely with your
brake cutout switch. This bike is designed to cut off the motor when the brake levers are
depressed, even a very small amount. This issue can be caused by brake cables with
too much slack, creating play in the brake lever.
In this first picture you can see a properly
aligned brake with no slack. The lever is
fully released and there is no gap between
it and the housing. This is how things
In this second shot I have depressed the
lever ever so slightly. I'm doing this manually,
but this can also be caused by slack. The
brake cable should be tight enough that this
doesn't happen due to just being loose. A
gap this small will cause your power to cut
Here's what happened to me. I had things
installed correctly, but I didn't notice that the
brake cable itself found its way to a position
where it kept the brake lever from fully
releasing. Once I read that the brakes could do
this (thanks guys) I quickly found the issue. My
cable is now out of the way and snapped to
other cables to keep it that way. Hope this all
Front wheel hub is broken
I have original sondors with suspension. But when I was biking, suddenly my front wheel got broke and I could not bike anymore. Removing the front wheel and inspecting, I could see that the cone in the front wheel hub is broken. It seems it is a very rare case and do you guys know if I can fix this? Replacing the front Tyre is extremely pricey.