Begode T4

[RolluS]

My serial number is BDG20220713xxx.

 

I'll let you know in case of weird noise or failed test.

Edited September 25, 2022 by RolluS

[buffs]

20 minutes ago, supercurio said:

Good catch and bad news, meaning that ZX fixed it on the S22 motor in July but not on the T4.
I asked my friend and will report.

mine has the same 20220723 date. i have 200+ miles on it, and when i spin the wheel i don't hear any of the click sounds. i suppose the stress test is still something i should consider.

[supercurio]

23 minutes ago, RolluS said:

Here is mine. I'll update you all with the status of the stress test

By the way, regarding stress tests: any spin test is conclusive only if it leads to a failure.
Passing a spin test doesn't validate a motor.

What's necessary is the "landing test", typically:

• lifting the wheel in the air with your legs, from holding yourself up between two tables or rails.
• let the motor spin to max speed
• drop the wheel suddenly to the ground so the motor is stopped instantly by regaining grip.
• repeat 15 times

It requires solid fitness. Power pads with a good lock-in will help immensely to lift and hold the wheel.

If a T4 passes this, then it should be fine. Any other way: unknown.

(expect King Song to describe similar instructions for their S22 motor test)

Edited September 23, 2022 by supercurio

[Tawpie]

2 hours ago, supercurio said:

I hope that there will be official testing instructions published soon by King Song

Are you by chance talking with BG about this yet? This being a supplier issue, perhaps with two of their customers on their backs ZX will get their act together.

I know we expect the final assembler to have caught all the issues, and they should. But this one's a bit sneaky in that motors haven't had stator adhesion problems in the past so it's not the kind of thing that's going to have gotten any special attention at the final assembly incoming inspection point. You usually don't spend much money checking on parts that have been good for ages and ages.

Still, it's a reminder to all manufacturers that at some point, what can go wrong, will. They need to continue to do better!

[supercurio]

16 minutes ago, Tawpie said:

Are you by chance talking with BG about this yet? This being a supplier issue, perhaps with two of their customers on their backs ZX will get their act together.

It seems like Milli received the messages I sent, liked one, so at least communication is established.

Edited September 23, 2022 by supercurio

[Paradox]

If history is any guidance now then Begode will just ignore current wheels and make changes only going forward. Current wheels be damned.

[meepmeepmayer]

43 minutes ago, supercurio said:

It seems like Milli received the messages I sent, liked one, so at least communication is established.

Are you in contact with ewheels? Or know of someone who is talking to them about this? If anybody can put pressure on manufacturers, it's ewheels.

[supercurio]

@meepmeepmayer yes I just tipped @Jason McNeil about it via email as well, same way I did just before the S22 would be shipped in the US, because I saw that eWheels is taking preorders deposits at the moment.

[Biggane]

https://imgur.com/a/NFLPlsY

Here’s a pic of my motor @supercurio

[KNZ]

Mannn... I'm probably making this out to be far worse than it actually is but stuff like this makes me want to give up the hobby altogether. Can't even have peace of mind without worrying constantly. 😕 

[RolluS]

I've made the "pendular" test. No problem.

I don't wan't to do the harsh stress/ageing/destructive test until I'm inclined to from Begode. My decision. I won't exceed 40km/h until then  My safety gear.

Anyway, I've commuted 8km and it was very pleasant ! https://euc.world/tour/613996704875180

I was 2 year from my last EUC trip, so consider me as a noob. I enjoy it, I have to be used to the weight (I come from MTen3), but I've been tailgating a quick bicycle and enjoyed my commute this evening

Edited September 23, 2022 by RolluS
(typos...)

[Archee Jan Bloch]

5 hours ago, Biggane said:

I just received mine and it seems to have this issue. There’s a noise coming from the motor that sounds like metal rubbing on metal:

https://imgur.com/a/cOqNRA7

I just talked to Factory, they are asking you not to ride it. .
Sometimes mid next week they should get new batch of T4 motors and will test is before sending the replacements out.. Contact your local dealer with motor number and tell them you are affected by this.. Make sure the dealer communicates with either Milli or Levi (Fei) about this  I had my client T4 also having this issue however while there was a slippage, the mainboard  didn't burn down, it only shows Hall censor error.. when putting different motor in (just hall sensor) the warning is gone

 

[meepmeepmayer]

29 minutes ago, KNZ said:

Mannn... I'm probably making this out to be far worse than it actually is but stuff like this makes me want to give up the hobby altogether. Can't even have peace of mind without worrying constantly. 😕 

These are sometimes horrible, but specific problems that you can take care of with a specific solution. The nature of self-balancing vehicles means than any hardware failure is a crash, but the number of failures that are unrelated to any specific known issue (bad motor like here, bad board batch, bad specific firmware, ...) is extremely close to zero.

Also, first batch is first batch, at this point I consider first batches to be for enthusiasts only (or people who can take the money loss).

But it can be exhausting, nobody is denying that. Same when you get a new wheel (maybe your first) and it has some issue right away! You just want to ride, and then this. Extremely demotivating. You have to power through, maybe with some effort, until the good times come. But they do come. And if you and your wheel aren't affected by some specific issue, there's no reason to worry.

[RolluS]

The fun fact is... If I weren't reading this forum I wouldn't be worried about this issue, and would be riding (or crashing) freely.

Edited September 23, 2022 by RolluS

[enaon]

7 minutes ago, RolluS said:

The fun fact is... If I weren't reading this forum I wouldn't be worried about this issue, and would be riding (or crashing) freely.

faceplant is bliss

 

Edited September 23, 2022 by enaon

[Archee Jan Bloch]

29 minutes ago, RolluS said:

I've made the "pendular" test. No problem.

I don't wan't to do the harsh stress/ageing/destructive test until I'm inclined to from Begode. My decision. I won't exceed 40km/h until then  My safety gear.

Anyway, I've commuted 8km and it was very pleasant ! https://euc.world/tour/613996704875180

I was 2 year from my last EUC trip, so consider me as a noob. I enjoy it, I have to be used to the weight (I come from MTen3), but I've been tailgating a quick bicycle and enjoyed my commute this evening

we did about 160 miles on it before it occurred even though Go George Go had slippage on the hill, at the end of the day the wheel completely stopped balancing.. see my message below.. all the motors that are shipped with 1st batch of T4 are likely affected and need to be replaced.

[RolluS]

1 minute ago, Archee Jan Bloch said:

we did about 160 miles on it before it occurred even though Go George Go had slippage on the hill, at the end of the day the wheel completely stopped balancing.. see my message below.. all the motors that are shipped with 1st batch of T4 are likely affected and need to be replaced.

Thank you very much for the information. I will check with my seller

[supercurio]

24 minutes ago, Archee Jan Bloch said:

I just talked to Factory, they are asking you not to ride it. .
Sometimes mid next week they should get new batch of T4 motors and will test is before sending the replacements out.. Contact your local dealer with motor number and tell them you are affected by this.. Make sure the dealer communicates with either Milli or Levi (Fei) about this  I had my client T4 also having this issue however while there was a slippage, the mainboard  didn't burn down, it only shows Hall censor error.. when putting different motor in (just hall sensor) the warning is gone

Thanks @Archee Jan Bloch for the quick reaction, and I have to say: promising feedback from Begode too!

I'm guessing they got a few distributors asking about this at the same time. Nice 👏

[Kevin Graehl]

2 hours ago, supercurio said:

By the way, regarding stress tests: any spin test is conclusive only if it leads to a failure.
Passing a spin test doesn't validate a motor.

What's necessary is the "landing test", typically:

• lifting the wheel in the air with your legs, from holding yourself up between two tables or rails.
• let the motor spin to max speed
• drop the wheel suddenly to the ground so the motor is stopped instantly by regaining grip.
• repeat 15 times

It requires solid fitness. Power pads with a good lock-in will help immensely to lift and hold the wheel.

If a T4 passes this, then it should be fine. Any other way: unknown.

(expect King Song to describe similar instructions for their S22 motor test)

I know your intent is goodhearted, but to anyone reading this.
DO NOT DO THIS TEST.  This is not endorsed by begode, or AlienRIdes.com

We are in contact with begode right now, and are identifying how we as a distrubutor are going to take care of our customers.  Just give us a few days (tops) to have an official response.  
I'm more active on facebook but you're free to text me 415.341.2281 with any quick questions.
https://photos.app.goo.gl/qdUMBzEHxXTXa8fs7 .  Here are some photos/ and a video of t4 vs S22.  

Kevin Graehl 
CTO AlienRIdes
San Francisco, CA
415.320.1495
 

[RolluS]

I had a slight noise, I think it was because I did not removed the plastic protection on the inside side of the battery boxes. I removed it now, I'll see if the noise is still there. 

[RolluS]

23 minutes ago, Kevin Graehl said:

I know your intent is goodhearted, but to anyone reading this.
DO NOT DO THIS TEST.  This is not endorsed by begode, or AlienRIdes.com

We are in contact with begode right now, and are identifying how we as a distrubutor are going to take care of our customers.  Just give us a few days (tops) to have an official response.  
I'm more active on facebook but you're free to text me 415.341.2281 with any quick questions.
https://photos.app.goo.gl/qdUMBzEHxXTXa8fs7 .  Here are some photos/ and a video of t4 vs S22.  

Kevin Graehl 
CTO AlienRIdes
San Francisco, CA
415.320.1495
 

Interestingly, I have the almost same serial number, just 2 last digits are differents.. Please let us now and if you can, tag me so I don't miss the information.

 

Edited September 23, 2022 by RolluS

[Archee Jan Bloch]

3 hours ago, buffs said:

mine has the same 20220723 date. i have 200+ miles on it, and when i spin the wheel i don't hear any of the click sounds. i suppose the stress test is still something i should consider.

Make sure you don't overtorque it uphill when the slippage of the magnets happens this would initiate the issue

 

[Archee Jan Bloch]

3 hours ago, supercurio said:

By the way, regarding stress tests: any spin test is conclusive only if it leads to a failure.
Passing a spin test doesn't validate a motor.

What's necessary is the "landing test", typically:

• lifting the wheel in the air with your legs, from holding yourself up between two tables or rails.
• let the motor spin to max speed
• drop the wheel suddenly to the ground so the motor is stopped instantly by regaining grip.
• repeat 15 times

It requires solid fitness. Power pads with a good lock-in will help immensely to lift and hold the wheel.

If a T4 passes this, then it should be fine. Any other way: unknown.

(expect King Song to describe similar instructions for their S22 motor test)

I believe someone did the test on KS .. and 10 out of 10 failed this but to be honest, I almost thing that every wheel will fail this

[supercurio]

1 hour ago, Kevin Graehl said:

I know your intent is goodhearted, but to anyone reading this.
DO NOT DO THIS TEST.  This is not endorsed by begode, or AlienRIdes.com

We are in contact with begode right now, and are identifying how we as a distrubutor are going to take care of our customers.  Just give us a few days (tops) to have an official response.  
I'm more active on facebook but you're free to text me 415.341.2281 with any quick questions.
https://photos.app.goo.gl/qdUMBzEHxXTXa8fs7 .  Here are some photos/ and a video of t4 vs S22.  

Kevin Graehl 
CTO AlienRIdes
San Francisco, CA
415.320.1495
 

Hey @Kevin Graehl! 

Thanks for stepping in and very happy that you're in a position to contradict my suggestion by providing a better answer, instead of being left only with the option of a ridiculously demanding and difficult validation test to run by yourself.
I'm very impressed by how quick this is moving forward this time, probably thanks to Begode who's answering in an effective way your requests.

To me, all these motors should be replaced by the OEM instead of relying on owners or dealers to try to validate them one by one. No doubt about that.

👏

 

1 hour ago, Archee Jan Bloch said:

I believe someone did the test on KS .. and 10 out of 10 failed this but to be honest, I almost thing that every wheel will fail this

That was eWheels on their S22 batch, with a test that's not as demanding.
But even the one I described here: it is supposed to be harmless to wheels without defects. You'll see why I say that soon.

Edited September 23, 2022 by supercurio

[bird]

1 hour ago, Kevin Graehl said:

I know your intent is goodhearted, but to anyone reading this.
DO NOT DO THIS TEST.  This is not endorsed by begode, or AlienRIdes.com

We are in contact with begode right now, and are identifying how we as a distrubutor are going to take care of our customers.  Just give us a few days (tops) to have an official response.  
I'm more active on facebook but you're free to text me 415.341.2281 with any quick questions.
https://photos.app.goo.gl/qdUMBzEHxXTXa8fs7 .  Here are some photos/ and a video of t4 vs S22.  

Kevin Graehl 
CTO AlienRIdes
San Francisco, CA
415.320.1495
 

Thanks for sharing this, I just picked up a T4 from AR and look forward to seeing this issue being addressed. 25 miles in and no issues so far with a 20220723 motor, but that's pretty early to make any judgements.