Speedict Ebike - Anybody seen/tried this?

[cwah]

Danny... bad news... I may have killed another speedict

Here is what happened:
- I connected as usual the speedict to the battery and controller, no problem.
- Then sliced the temp sensor. I connected the white wire (signal) to the temp sensor coming out of my mac.
- For unknown reason, just with this white wire, the speedict was able to read the temp! Miracle. It reads 26.5C. Perfect.
- I tried to use the throttle to see how the temp would increase... I started slowly... then go faster on the throttle... The wheel spins and I was looking at the temp.
- But it didn't stop. The wheel keeps spinning! I thought it would be a problem with my throttle wire, I disconnect them one after the other... Red, green, black... No more throttle connection.. but the wheel keeps spinning at max speed.

-- WHAAAAat the fuuck?? Motor keeps running without throttle connected at all???? --

- It started to smell the melted plastic. Damn!
- While handling the bike, I used my leg and unplug the main wire of the battery. Everything stops. Wires are all hot. And speedict stopped working. There is only a very dim green light on it...
- When I plugged again the controller to the battery without speedict, everything works as normal. Motor doesn't spin automatically and spins only via throttle.


I don't understand what happened. It looks like a windows bug. Usually ebikes are very predictable. It seems like there was a short or something that used max amps somehow via the temp sensor... Speedict was only connected via the main wires and from the white wire of the temp sensor. I don't see how anything can short..

Damn..

[speedict]

- It started to smell the melted plastic. Damn!
- While handling the bike, I used my leg and unplug the main wire of the battery. Everything stops. Wires are all hot. And speedict stopped working. There is only a very dim green light on it...
- When I plugged again the controller to the battery without speedict, everything works as normal. Motor doesn't spin automatically and spins only via throttle.

first of all can you tell me "Wires are all hot" mean ? which wires ? you should on no load test right ? current should around 1-2A on full throttle

[cwah]

Yes it was on no load test, so it shouldn't be hot.
Phase wires were definitely hot and heatshrink area started to melt. Not sure about other wires... Still don't understand how can that ever happen.

[speedict]

Yes it was on no load test, so it shouldn't be hot.
Phase wires were definitely hot and heatshrink area started to melt. Not sure about other wires... Still don't understand how can that ever happen.

heatshrink area ? where about ?

[cwah]

Will take some pictures and post them. Go to work now, will upload it a bit later

[speedict]

Will take some pictures and post them. Go to work now, will upload it a bit later

ok

[cwah]

Danny, here's the harness I use to plug my controller to the battery and motor:


I use ATX 24 pins plug, but they are not very reliable. I'm thinking about changing them. It started to be sticky on the heatshrink area.

[speedict]

Danny, here's the harness I use to plug my controller to the battery and motor:


I use ATX 24 pins plug, but they are not very reliable. I'm thinking about changing them. It started to be sticky on the heatshrink area.

as per your description, the phase wire were hot and it was under no load, it may caused by your speed controller, e.g. if speed ebike throttle port send 4.5v to your controller and your controller has no dead time prevent feature, the mosfet may act like short circuit, therefore caused very hot, do you agree ?

[cwah]

Not sure to understand Danny. I completely disconnected the throttle to the controller, so it wasn't possible to send any signal to the controller.

What was strange was that the wheel only starts spinning when I use the throttle. But when I release the throttle, it keeps spinning. And it even keeps spinning without throttle connected at all.

[Erikjan]

When i disconnect the red cable from the speedict but dont disconntect from the controller when the speedict is powerd my bike go full speed to.
You have to disconnect the controller fist. Or better disconnect the battery before disconnect other cables.

[cwah]

When i disconnect the red cable from the speedict but dont disconntect from the controller when the speedict is powerd my bike go full speed to.
You have to disconnect the controller fist. Or better disconnect the battery before disconnect other cables.

Which red cable are you talking about?

[speedict]

Not sure to understand Danny. I completely disconnected the throttle to the controller, so it wasn't possible to send any signal to the controller.

What was strange was that the wheel only starts spinning when I use the throttle. But when I release the throttle, it keeps spinning. And it even keeps spinning without throttle connected at all.

did you say, you connect red throttle cable to speed controller, and some how short circuit or something wrong, your speed controller with motor spin fast non stop right ? and very hot ? can you re-confirm this ?

[cwah]

The throttle cable which is red green and black was connected as usual to the controller. I used the bike previously and it was working.

I connected the red temp sensor to the white cable of the temp sensor from the speedict only.

----------


Once started, the motor keeps spinning, and even without throttle connected at all (I disconnected the red, green and black wire) to the controller it keeps spinning. I don't know why.

Controller wasn't hot. It's a big Hua tong that's probably something like 15 Fets inside. Motor a little bit. Phase wires were hot.

[Erikjan]

When i disconnect the red cable from the speedict but dont disconntect from the controller when the speedict is powerd my bike go full speed to.
You have to disconnect the controller fist. Or better disconnect the battery before disconnect other cables.

Which red cable are you talking about?

When use the trottle direct on the speedict you have to use a red and bleu cable that you can order from danny.
The bleu cable goos between throttle and speedict and the red cable goos between speedict and controller.

When you disconnect the red cable from the speedict when everyting is powerd and not disconnect from the controller the engine spins full speed.
If you then disconnect the red cable from the contoller te engine stops.

It is litte hard for me explain in english. When i recieved the new red cabele from danny i make a movie and post on youtube.

I dont understand what you try to explain about the cables sorry.

[cwah]

oh ok, I see what you mean.

I didn't use the throttle re-writing cable from speedict. I have a direct connection between the controller and the throttle. I only wire between the speedict and the controller are the main wires. And the only one to the motor is the red wire from the temp sensor of my motor (to the white temp sensor wire from the speedict)

[speedict]

oh ok, I see what you mean.

I didn't use the throttle re-writing cable from speedict. I have a direct connection between the controller and the throttle. I only wire between the speedict and the controller are the main wires. And the only one to the motor is the red wire from the temp sensor of my motor (to the white temp sensor wire from the speedict)

ok got it, the problem seem to be your motor's temperature wire connected to speedict ebike's signal port and some how short circuit caused too much current drop and at the end speed controller's mcu out of control (reset itself ?)

so how your speed controller back to normal ? and only speedict ebike burnt ?

[cwah]

I'm going to re-wire everything tonight to see if everything is still working as normal without temp sensor.

I think only the speedict burnt. I don't know how because the current shouldn't be high enough to kill it.

[speedict]

I'm going to re-wire everything tonight to see if everything is still working as normal without temp sensor.

I think only the speedict burnt. I don't know how because the current shouldn't be high enough to kill it.

may be the voltage, since i don't know what's inside the motor, be careful motor voltage is equal to line voltage !

don't worry will send you another speedict ebike

[cwah]

I was at 76V with my batteries. Is the motor voltage higher than that?

[speedict]

I was at 76V with my batteries. Is the motor voltage higher than that?

speedict ebike wasn't kill by line voltage because you said the green led still flashing right ? however the mcu might be killed by motor temperature wire and caused program inside lost

[cwah]

The green light isn't flashing anymore. It is just kept "on" in a very dim state. I'm going to try again tonight to see if it improves.

[speedict]

The green light isn't flashing anymore. It is just kept "on" in a very dim state. I'm going to try again tonight to see if it improves.

yes sort of ... as long as it is on, mean the main power is still there, just the mcu damage.

[N!co]

I have problems synchronizing trip data. How long should it take after 15km to sync. trip data? It counts to more then 3 minutes and the the program force closes.

[cwah]

Danny, I just tried again.

Speedict is definitely dead.

Controller and motor are working well.

However... I've just noticed that the issue wasn't coming from the speedict because this time it wasn't connected at all. When I use the throttle gently, it works fine. But once I push the throttle to the maximum. The wheel keeps spinning at max speed non stop. Even when I disconnect the throttle wires it keeps spinning.

Phase wires get hot in seconds.. don't know why. Either a short somewhere from my (ugly) wiring harness or an issue with the Hua tong controller..


ps: so it appears that it's not an issue with the temp sensor to the speedict

[speedict]

I have problems synchronizing trip data. How long should it take after 15km to sync. trip data? It counts to more then 3 minutes and the the program force closes.

hi nico,

can you try to erase all record(s) within speedict ebike by using PC Suite -> File -> Erase Date ?
and try to record few minutes to sync again ?

can you also tell me your android version ? phone model ?