Help! Tongsheng thumb throttle

[Pumpalump]

Hi all,
Totally confused about adding a thumb throttle to my bike.
I have seen various comment about this, I have a TSDZ2 motor, the cable coming out of the motor ie controller has six pins, I have a VLCD5 display, 48V Battery and 500w motor.
Question: Will a thumb throttle work by just plugging it into the middle socket at the back of the display?
If not what do I need to do to make it work.
Thanks in advance.
Phil

 

[harrys]

As I understand it, the 6 pin and 8 pin controller circuit boards are the same, but the display cable doesn't contain the +5 throttle power and throttle signal. If you plug a throttle into the middle of your 6 pin VLDC5, it's not connected. You need a VLDC5 with an 8 pin cable and an 8 pin controller cable. I believe some people have wired the 8 pin cable into the controller.

If you go to this link, they show the board positions for the throttle signal, power and ground on a controller. You should read it first, but here's the picture of the controller showing where the 8 pin cable would attach the extra wires for the throttle.
.


I would presume you need an 8 pin VLDC5 and a matching 8 pin cable. Hopefully, it's off a dead TSDZ2 controller, so the wire colors match. You reconnect the six orignal wires and add the two new ones to THR amd +5V anove, Ugh. That's a lot of work eith high potential for error.

If you must have a throttle, here's my proposal, as yet untested. Instead of routing the signals thru the display, connect the throttle, any throttle, directly to the controller using the THR, +5, and GND positions shown in the picture. Your old VLDC5 will work, etc.

However, there are different controller versions, and the connector positions can change. I wouldn't try it unless my controller matched the above picture exactly.

 

[Nealh]

In the UK it would make it a twist and go and not pedal first so illegal by law.

UK has a few legal options.
For non twist and go one needs a KT set up to pedal first.
By a Wisper bike that conforms to twist & go via a V5.
Take your bike to a test station and have it tested so that it conforms .

 

[Pumpalump]

As I understand it, the 6 pin and 8 pin controller circuit boards are the same, but the display cable doesn't contain the +5 throttle power and throttle signal. If you plug a throttle into the middle of your 6 pin VLDC5, it's not connected. You need a VLDC5 with an 8 pin cable and an 8 pin controller cable. I believe some people have wired the 8 pin cable into the controller.

If you go to this link, they show the board positions for the throttle signal, power and ground on a controller. You should read it first, but here's the picture of the controller showing where the 8 pin cable would attach the extra wires for the throttle.
.
View attachment 59509

I would presume you need an 8 pin VLDC5 and a matching 8 pin cable. Hopefully, it's off a dead TSDZ2 controller, so the wire colors match. You reconnect the six orignal wires and add the two new ones to THR amd +5V anove, Ugh. That's a lot of work eith high potential for error.

If you must have a throttle, here's my proposal, as yet untested. Instead of routing the signals thru the display, connect the throttle, any throttle, directly to the controller using the THR, +5, and GND positions shown in the picture. Your old VLDC5 will work, etc.

However, there are different controller versions, and the connector positions can change. I wouldn't try it unless my controller matched the above picture exactly.

Thanks for the response, think I understand now.
I think the easiest option would be to hot wire the throttle direct into the control circuit board.
From memory I think I would only need to remove one cover from the motor.

 

[Pumpalump]

In the UK it would make it a twist and go and not pedal first so illegal by law.

UK has a few legal options.
For non twist and go one needs a KT set up to pedal first.
By a Wisper bike that conforms to twist & go via a V5.
Take your bike to a test station and have it tested so that it conforms .

Its ok as I only ride mine of road on private land however I see lots of Delveroo bikes bombing around when im in my car at speeds well over the 15mph limit where I live and the riders dont even touch the pedals but nobody is policing them. No lights, go through red lights etc. One rule for one................

 

[Pumpalump]

As I understand it, the 6 pin and 8 pin controller circuit boards are the same, but the display cable doesn't contain the +5 throttle power and throttle signal. If you plug a throttle into the middle of your 6 pin VLDC5, it's not connected. You need a VLDC5 with an 8 pin cable and an 8 pin controller cable. I believe some people have wired the 8 pin cable into the controller.

If you go to this link, they show the board positions for the throttle signal, power and ground on a controller. You should read it first, but here's the picture of the controller showing where the 8 pin cable would attach the extra wires for the throttle.
.
View attachment 59509

I would presume you need an 8 pin VLDC5 and a matching 8 pin cable. Hopefully, it's off a dead TSDZ2 controller, so the wire colors match. You reconnect the six orignal wires and add the two new ones to THR amd +5V anove, Ugh. That's a lot of work eith high potential for error.

If you must have a throttle, here's my proposal, as yet untested. Instead of routing the signals thru the display, connect the throttle, any throttle, directly to the controller using the THR, +5, and GND positions shown in the picture. Your old VLDC5 will work, etc.

However, there are different controller versions, and the connector positions can change. I wouldn't try it unless my controller matched the above picture exactly.

Hi,
From memory when I had to replace a control board I it was is sealed with a layer of resin so not sure how soldering the wires in would be possible, I could try grinding the resin down with a dremell I guess until I get to the connections ?