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INMOTION V12


Mike Roe

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2 hours ago, Planemo said:

But maybe Inmo have to use leaded by law?

ROHS means "no lead". Military and life support electronics were exempted for (I believe) 10 years, but I think everyone has to use lead-free now. And the lead-free solders are absolutely known to be much less reliable—they microfracture. It's a metallurgy thing that I don't understand and accepted as fact... to remove the minuscule amount of lead introduced by solder joints we've made assemblies that absolutely will fail earlier, and will enter the waste stream. You don't want to get me started on that one!

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24 minutes ago, Tawpie said:

and my contemporaries would not have approved it if I had.

I suspect that your contemporaries wouldn't approve of much on a Chinese EUC. I would think that stressed FET legs would be the least of their concerns :o

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9 minutes ago, Tawpie said:

ROHS means "no lead".

Yeah, my point was I have no idea if any wheels are ROHS or not. I suspect they use whatever they can get their hands on, and whatever comes cheapest. Then slap on an ROHS sticker, along with the EU approved one whilst they are at it...

9 minutes ago, Tawpie said:

And the lead-free solders are absolutely known to be much less reliable—they microfracture.

Precisely why I don't use them. Plus they are crap to work with as I said.

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41 minutes ago, Planemo said:

Yeah, my point was I have no idea if any wheels are ROHS or not. I suspect they use whatever they can get their hands on, and whatever comes cheapest. Then slap on an ROHS sticker, along with the EU approved one whilst they are at it...

Precisely why I don't use them. Plus they are crap to work with as I said.

Work with lead and you’ll be younger for… longer!  :huh:   

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I know environmental contamination is the real driver to phase out lead solder, but I'd like to see a study of old electricians/electrical engineers looking for lead poisoning in them. That would allow me to selfishly and happily keep using lead solder, instead of fretting about wearing gloves while soldering, and worrying about dust from the wire sponge or whatever it's called.

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lol what's up with the Sound Wave in 1.5.4, it's terrible! The original one was subtle and nice sounding will we get that back?

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6 hours ago, Rawnei said:

lol what's up with the Sound Wave in 1.5.4, it's terrible! The original one was subtle and nice sounding will we get that back?

there is a beta firmware with the old soundwave 1.5.7 So i think its possible the old one will come back. Not sure if that beta is still open or not. 

 

 

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6 hours ago, Rawnei said:

what's up with the Sound Wave in 1.5.4, it's terrible!

interesting my V12, tells me my firmware is up to date with the latest, 1.5.0  I thought the most current?   It has now the original sound wave sound ( batch 1)

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6 minutes ago, Mrd777 said:

V12 tells me my firmware is up to date with the latest, 1.5.0  
I thought the most current [is 1.5.4]?

Update to 1.5.4 via iOS was disabled by Inmotion (maybe from Android now as well?)
More firmware discussion here: https://forum.electricunicycle.org/topic/25723-v12-firmware-154-and-firmware-update-problems/page/2/#comment-395452

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4 minutes ago, supercurio said:

I had a call this morning with the sales director, R&D director and a few more Inmotion employees, setup by @Cecily Inmotion.

Essentially to reach out and see if it's possible to help reaching effective solutions.

It was 1h35 long and we talked about a number of topics, ranging from what is happening to riders, how a wheel can fail after passing the stress test, our perception as a community, the warning signs, a technical analysis based on the MOSFET datasheet, how the issue occurs, root cause and investigation, how/why publish investigation results, the V12 HT board, other MOSFET selection, what would happen if replacing only the dead board vs a voluntary recall, safety measures via apps or firmware in the meantime.

I'm confident that a recall is the better option for everyone so I made a case for that.

A lot was discussed so it'll take a good amount of time to write a recap here, I'll do that later today or tomorrow.

In the meantime please ask if you have specific questions on one of the topics listed, then if we talked about that I'll make sure to include it in the recap. If not, since the meeting went well there should be follow-ups.

Thanks for putting the time and energy into this.

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50 minutes ago, supercurio said:

I had a call this morning with the sales director, R&D director and a few more Inmotion employees, setup by @Cecily Inmotion.

Essentially to reach out and see if it's possible to help reaching effective solutions.

It was 1h35 long and we talked about a number of topics, ranging from what is happening to riders, how a wheel can fail after passing the stress test, our perception as a community, the warning signs, a technical analysis based on the MOSFET datasheet, how the issue occurs, root cause and investigation, how/why publish investigation results, the V12 HT board, other MOSFET selection, what would happen if replacing only the dead board vs a voluntary recall, safety measures via apps or firmware in the meantime.

I'm confident that a recall is the better option for everyone so I made a case for that.

A lot was discussed so it'll take a good amount of time to write a recap here, I'll do that later today or tomorrow.

In the meantime please ask if you have specific questions on one of the topics listed, then if we talked about that I'll make sure to include it in the recap. If not, since the meeting went well there should be follow-ups.

Does the V12 HT board use a different heatsink?

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5 hours ago, supercurio said:

I'm confident that a recall is the better option for everyone so I made a case for that.

   That might be the case for people that bought the wheel from a local dealer, but it might be possible, as in my case, that sending the wheel from UK to China just to change the board would not be the best solution. It would be great if InMotion would give us a choice.

   I wanna thank InMotion for not letting us in the dark and for trying to rethink a solution together with us, the users, as the first one didn’t seem to be answering the real issue. This is really hope giving. And man, thanks for your time. You must be having your job that you must attend, I don’t know how you did it, but it means a great deal to us. Cheers! 

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Shipping the wheel back, who pays the shipping doh..?  Extra expense from customer side is kinda meh..

Simply make more choices.

Send to dealer in that area (Who knows what they are doing) Inmotion pays that dealer something for his service.. So customer can bring in his wheel for free exchange of so said mobo.

Option where they simply send out mobo to customer. (Whit said contract that customer takes everything in his own hands.. Yeah i know it's gray area.. But some people have only this option..) +They make online guide how to change. From opening wheel and so on..

And simply ship whole wheel back to Inmotion.. (Free of charge.) <Best option.

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3 minutes ago, Richardo said:

Not sure if you saw it, but I posted my existing board swap process here

So Dr., was the operation a success?  Did the patient recover from his surgery?

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10 minutes ago, Paradox said:

So Dr., was the operation a success?  Did the patient recover from his surgery?

Well i rode it back and forth in my basement a bit but havent done the stress tests or taken it outside. Those are on my list but lifes crazy ahorita

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