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EcoDrift's 2018 service statistics (failure rate by brand and model)


trya
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  • trya changed the title to EcoDrift's 2018 service statistics (failure rate by brand and model)

These numbers all aren't pretty. Even 5% is one in twenty. I'm wondering if the Chinese somehow sell lower quality wheels to the Russian market vs. the Western market? "Chinese cells" for example.

4 hours ago, trya said:

Gotway is not represented because Ecodrift didn’t sell it in 2018

Just when the Gotway models with the best electronics of all wheels were released. But I can see where they were coming from. Hopefully they can start selling GW again.

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1 hour ago, meepmeepmayer said:

These numbers all aren't pretty. Even 5% is one in twenty. I'm wondering if the Chinese somehow sell lower quality wheels to the Russian market vs. the Western market? "Chinese cells" for example.

I don't think so. In fact, Ecodrift has quite strong relationships with the manufacturers, as far as I know. 

As to the numbers, it'd be interesting to hear @Jason McNeil's comments and notes about his own experience.

1 hour ago, meepmeepmayer said:

Hopefully they can start selling GW again.

Judging by the fact that they are testing Nikola - it is possible, I think.

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7 hours ago, trya said:

I don't think so. In fact, Ecodrift has quite strong relationships with the manufacturers, as far as I know. 

As to the numbers, it'd be interesting to hear @Jason McNeil's comments and notes about his own experience.

Judging by the fact that they are testing Nikola - it is possible, I think.

NineBot One Z really are not doing good at all. Those failure rate May even go higher. @Marty Backe @houseofjob @Jason McNeil @RoberAce 

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We don't know the sample size for those failure rates, so they may not be representative. Failure rates should go down as improvements are made to later batches based to defect reports. Really, I would hope that 1% or less failure  would be the norm, but not so. Must be eating into profits. This is what happens when market is small and it is difficult to justify extended development and testing before committing to production. At least all these manufacturers are implementing fixes pretty quickly across the board.

Edited by Nic
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When one thinks of all the times we throw our wheels down the road after dismounting (especially while learning), it's a wonder they work at all.  Take your average transistor radio and throw it down the road 5 or 6 times and see if the circuit board has survived.  Probably not.  Our circuit board are hard mounted to the wheel shell by necessity, so every shock is transmitted directly to the board. 

Actually, come to think of it, is it really necessary to mount the board so rigidly to the shell?  Surely a semi rigid mount (that still accurately follows the movement of the shell) would still function normally and reduce the severity of shocks felt by the board. 

I'm thinking something like double sided foam tape. A little cushion but nothing that allows the orientation of the board to differ from that of the shell.  Think of it like this.  rap a knuckle on a hard surface, now place an unfolded towel on the surface and do it again.  feel, or imagine the difference of the severity of the shock?

Edited by Smoother
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3 hours ago, Marty Backe said:

I have my doubts that this would work. When one or more control board mounting screws become just a little bit lose, the wheel will start vibrating a little when riding it. This low-level vibration is actually a good indicator that the control board is getting loose within the wheel.

Therefore, I think the boards need to be tightly secured to the shell in order that the wheels can give us the finely tuned responses to our body inputs.

Properly designed electronics can operate under severe vibration. I work in the Aerospace industry. Satellites survive the rocket launch to orbit all of the time and they don't incorporate cushioning for the electronics. Granted, our EUC boards are not exactly designed to Aerospace standards, so it is a wonder that they work through all the abuse that they get.

Yes but a loose screw in a system designed around tight screws, is a fault.  A full perimeter of foam double sided tape would not be a fault, it would BEthe system.  If you use foam tape to stick a rectangular plate to a flat surface, all around the edge, it wont vibrate, or be loose.  It will follow the surface faithfully.  I have ridden over many a rough surface (as have you) that shakes the crap out of the wheel and by default, the board.  The shaking isn't the problem, its the disentanglement of the shaking, that of the board and the wheel.  If the tape stays in place, there is no disentanglement.  Hey, its just a theory.  I just so happen to need to re-install a board in my wheel when it gets back here from Poland.  Maybe I'll take the opportunity to test my theory.  It would also make a reassuring seal over the hole that allows for cooling, in the wheel well.

EDIT "Properly designed electronics can operate under severe vibration".  Whose version of "properly" is used when designing and building EUC control boards? :D  After all, this isn't the hairospace industry.

Edited by Smoother
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3 hours ago, Joker10 said:

Are these statistics for failures on wheels that were new and non functional on arrival or failures in general regardless of age/use.

I believe these are all for wheels sold in 2018, in other words these are all warranty cases, both DOA and after-sales.

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