[Updated] The eMaven

[aloys_b]

[Update] I'm sorry, but I miss to tell you some more information about my project 2 days ago.
So It's done now below

Hello,

I'm a new in this area, and I'm mounting a eboard with Alien solution.
I choose to use a BMS to manage the battery, but I'm not sure about the wiring.

Could you confirm my diagram ?

Thank you

 

[akiraEC]

Hehe, going for dual diagonal too.
That will be a hell of a ride, the three of us in Paris soon.

Can't help you with the wiring though ... I am still in the mecanical part.

 

[aloys_b]

He he yes that will be !

Tomorrow I mount my board with okp if I've the confirmation about this wiring diagram.
But I'm not sure that a lot of people know the BMS and his connection...

 

[okp]

 

[okp]

hey ES,

We did some soldering job this afternoon with aloys. Got the motor / ESC wired; Battery with XT90 too.

We started to look the BMS - aloys will post photos later on.. but I was not confident enough to go straight on as I never installed a BMS.

First thing which is weird is that the charger connector plug (1,2,3) is not documented, so you don't really know where to connect it

No Alien Power switch was provided so I don't know if this is missing / should be ordered .. so how can it work without a power switch? Aloys will carry on, but we didn't manage to get everything sure of what has to be soldered on BMS

 

[dnmun]

you appear to have a 24S D131 but only a 6S lipo pack. there does not appear to be a sense wire harness for the D131. it looks like you have a balancing charger and not a bulk charger required to use a BMS to charge with.

none of the parts are labeled and there is no wiring diagram so not sure what wiring diagram you refer to.

 

[okp]

yeah, dnmun you're right - He should be posting later on, or tomorrow a better wiring diagram with some wires soldered - that will help for advices, as it's only on the BMS that he needs help.

Apparently the BMS would not need a Power Switch... which is something I am not really convinced off.. because how can you switch off the board without switch on/off

 

[dnmun]

if the BMS has mosfets on the output then you can put a switch between the source and gate. shorting the gate to the source will turn off the mosfet.

 

[aloys_b]

Hello,


I'm sorry, but I miss to tell you some more information about my project 2 days ago.
So I will did it now


A friend Cedric, alias Okp in this forum, give me the wish to mount my own eboard. So, I started it and choose the Alien system solution for the electronics and the mecanics parts :

Alien Power System 150Amp 4.4KW Twin motors Kit 2
Alien 7S 10000mah 35C Lipo Battery
Alien Power System 2.4Ghz Remote control
7S BMS
Watt meter
Precision Caliber I and II Truck mount kit - Dual Diagonal Motor 36-12
Quanum remote control


For the board, I choose the beautiful Maven by Original skateboard, for his futuristic look
I've the time to ride it motorless and it's a perfect asphalt mass murder.

The only problem is I must put 1cm riser to have the space for the motor due to the drop.

Currently, I'm trying to connect the BMS with other parts. But I don't figure out how to connect this components.
Maybe some of you could help me ?

I have no indication about the charging plug, only 3 numbers : 1, 2 & 3 ... I only know the battery charger is the KP180S-31L.
About the BMS, I have this specification sheet :

Finally, this montage seem to miss a simple switch. The power switch is on board on the bms.
But I don't know, where I should put it ?


Thank you to read me and for possible help

 

[aloys_b]

Finally, I figured out how to connect the BMS.

Are you agree with me ?

I have another matter : could I connect the Wattmeter between the BMS and the battery to follow his charge and his discharge ?

 

[okp]

we did it

 

[elkick]

Nice work, looks great and that battery must give you a good range!

I am working on a similar setup thinking to integrate that BMS too.
Do you use the on/off-switch of the BMS for general switching things on/off on the board and if so, does that work well?
Or did you implement an additional (anti-sparc)-switch?

 

[aloys_b]

Nice work, looks great and that battery must give you a good range!

I am working on a similar setup thinking to integrate that BMS too.
Do you use the on/off-switch of the BMS for general switching things on/off on the board and if so, does that work well?
Or did you implement an additional (anti-sparc)-switch?

Yes the board works well !

The BMS allow to put a simple switch on/on (not with antispark), and so I can turn on/off my board.

 

[okp]

the board is really great !

 

[elkick]

Thanks aloys_b, will give it a try. Should be quite convenient to use that switch.

Your board looks great, but you have to get rid of that remote.

 

[aloys_b]

Yeah the benefit is, for a small weight, you have a wholly integrated system under your board : a real plug & play.

Do you recognize my remote control ? It's the Quanum and it's like a gun. That's no very cool in Paris since the Charlie Hebdo event...
I'm going to bought a GT2B. That's will be better and I saw that a lot of people try to make a great cover for this remote.

 

[elkick]

The same here with the standard remotes and you don't want to be stopped because the police might think you're a threat.

I am using the nunchuk with all of my boards at the moment and had no issues with it so far. Next step would be testing the nunchuk with the VESC. I also will try Bruno's remote in the future, he should be ready in the next weeks.

But nevertheless, I guess printing your own enclosure for the GT2B might be a very good and reliable solution.

 

[aloys_b]

@Elkick : My friend OKp has a terrible issue with the nunchuk : a fall at 50 km/h, wich force him to stay 3 weeks on his sofa...

Today, I notice a bad sound on one of my motors. I've taken 2 videos : https://www.youtube.com/watch?v=0bIUM1OhHv4
and https://www.youtube.com/watch?v=8iZxztegnO4
Has someone aldready meet with this weird sound ? What do you think ?
I notice this after having a problem when I ride my board : this stop brutally, it seemed to have a jamming…

 

[aloys_b]

Hello,

I noticed a problem with one of my motor. There is a free translatory movement ...

I made 2 videos to show you :
[youtube]AwnP3jiYQAc[/youtube]
[youtube]CYadYhEkpCU[/youtube]

I try to unscrew the screw on the shaft to reclip this last, before tighten the whole. But that no works...

What do you think ? Is there a manufacturing defect ?

 

[torqueboards]

That's due to the C clip either being damaged or loose.

1. Undo the set screws on the back of the can which sit on the motor shaft.
2. You can put the motor resting on the shaft upright.
3. Use a soft mallet and hammer the motor down so it rests closer to the c clip.
4. Bolt down the set screws. I like to replace them with M3 bolts instead of the set screws. I'm able to torque them down much better and less likely to strip the smaller set screws.
5. Replace the C clip if you need too.

Most of the play should be gone after doing the steps above.

Your specific issue looks like the set screw isn't bolted down on the motor.

 

[aloys_b]

That's due to the C clip either being damaged or loose.

1. Undo the set screws on the back of the can which sit on the motor shaft.
2. You can put the motor resting on the shaft upright.
3. Use a soft mallet and hammer the motor down so it rests closer to the c clip.
4. Bolt down the set screws. I like to replace them with M3 bolts instead of the set screws. I'm able to torque them down much better and less likely to strip the smaller set screws.
5. Replace the C clip if you need too.

Most of the play should be gone after doing the steps above.

Your specific issue looks like the set screw isn't bolted down on the motor.

Thank you for your reply Torqueboards. But I didn't complety understand you.
On the shaft of my motor, I've only one grub. And when I unscrew it, I can't take out the shaft...

 

[made_in_the_alps_legacy]

+1 w. Torque : "Undo the set screws on the back of the can which sit on the motor shaft."
Adjustement there is really tight, once set screw(s) is unscrewed, use force to slide it and compensiate the gap at the C clip