Oscillation and cut out problem with Gotway MSuper V3, ACM, maybe Monster shipped from May 2017 onwards

[Rehab1]

7 minutes ago, The Fat Unicyclist said:

You should swap them out wearing one of each at the same time... You will still be a Guinea Pig, but in the unfortunate event of an accident we will at least get some valuable data!   ?

Welcome to the morbid accident discussion. I now have a metal cage wrapped around me so I’m good. Also if I  remember correctly you have an implant that would allow you to join our exclusive club, 

[mezzanine]

6 minutes ago, Rehab1 said:

Interestingly my hands never touched the ground. It was left elbow and head that hit.  Instead of fracturing my elbow upon impact the baton was passed and the forces were translated up to my humeral head. Not sure if elbow pads would have absorbed some of the forces. Unfortunately I was not wearing them at the time.

I must have read you describe this before and since forgotten.  Thanks for refreshing my memory.  Makes me think there was nothing you could have done that would have significantly reduced your injury. 

According to many here, had you been a skilled "roller" you would have avoided any injury at all.  

 

[mezzanine]

17 minutes ago, The Fat Unicyclist said:

You should swap them out wearing one of each at the same time... You will still be a Guinea Pig, but in the unfortunate event of an accident we will at least get some valuable data!   ?

My first instinct when I received the flexmeters after having had the Hired Hands for a few months was that the flexmeters are the safer bet.  They're certainly much more robust and substantial (and correspondingly less convenient to put on/take off). 

I haven't had to test the flexmeters yet (knocks on wood), but I've had to rely on the Hired Hands and I like that they're integrated into a glove for secondary protection for fingers and the palm protection seems slightly better to me, but I'm sure others will disagree.  I can apply a lot of force on the heel of my hand with the Hired Hands without feeling uncomfortable.  I don't like the velcro fastener on the Hired Hands.  

[Rehab1]

13 minutes ago, mezzanine said:

According to many here, had you been a skilled "roller" you would have avoided any injury at all.  

Interesting that some would say that. Not sure how many members have hit a 10” deep pot hole going 25 mph. My quest for an improved pedal design (spikes) may have been the culprit.  I’ve had nightmares about the ACM’s 50 pound weight being permanently attached to my feet as I tumbled. 

Edited May 20, 2018 by Rehab1

[mezzanine]

2 minutes ago, Rehab1 said:

Some would say but my quest for an improved pedal design (spikes) may have been the culprit.  I’ve had nightmares about the ACM’s 50 pound weight being permanently attached to my feet as I tumbled. 

I'm not surprised to hear about the nightmares.  I try to mention to newbs that one of the less predictable outcomes of having an accident is the psychological response you have after the accident.  I'm convinced a lot of the people who buy EUCs and then end up giving it up quickly is because they've failed to anticipate how'd they'd respond psychologically to a hard fall.  It's one thing to recover from a physical injury, another to recover psychologically. 
 

I'm impressed with your resilience, psychologically.  I think I'd have been done.  And honestly, I can't really afford to be with the amount of money I have invested.  I'm super careful in the weeks following an accident because I'm aware that another fall soon after could break my confidence.  

[atmadams]

1 hour ago, Hunka Hunka Burning Love said:

Sorry to hear about your accident.    Any previous history of crashes on the wheel that may have loosened up a connector?  Riding in rain?  What is your weight?  Got any Wheellog telemetry?

I never ride with any apps active. However that ride I was connected to DarknessBot. I just opened the app for the first time since the crash (I landed on my iPhone 8 and barley a scratch on it) and all I could see is the battery was at 83% and the temp reading was 37.1c. It doesn’t seem to have stored any log data.

I weigh about 185 lbs conditions were dry and the temp was around 60 F. 

I had only one very minor crash prior which I had a pm conversation with @Marty Backe. Now that I think about it that was hitting a bump too but I was at a very slow speed... no more than a fast walk.  That was a case of the wheel caught on something and off I went.  No injuries to speak of. I opened the wheel and everything looked good. 

 

[Hunka Hunka Burning Love]

Unfortunately these wheels likely aren't thoroughly vibration tested over long periods of time.  I've always thought they should have automotive / motorcycle grade waterproof connectors and ports to help reduce chances of failure.  Intermittent faults can really shake one's confidence in a wheel. 

It would be interesting to do a full check of the wheel's components to try to find out what exactly failed.  Maybe a weak cell in the battery pack may have triggered the BMS to kick in?  @noisycarlos had a puzzling drop from his Ninebot One E+ ages ago that he discovered was due to a some failing battery cells. 

Edited May 20, 2018 by Hunka Hunka Burning Love

[The Fat Unicyclist]

2 hours ago, Rehab1 said:

Welcome to the morbid accident discussion. I now have a metal cage wrapped around me so I’m good. Also if I  remember correctly you have an implant that would allow you to join our exclusive club, 

Good memory... Yes, my left elbow does indeed extend my WiFi Reception when I hold my phone in that hand. But not directly due to an EUC in my case.

[Scatcat]

10 hours ago, Rehab1 said:

Interestingly my hands never touched the ground. It was left elbow and head that hit.  Instead of fracturing my elbow upon impact the baton was passed and the forces were translated up to my humeral head. Not sure if elbow pads would have absorbed some of the forces. Unfortunately I was not wearing them at the time.

I think that depends a lot on what kind of elbow pads you'd have. I doubt for example that the built in elbow pads in my MC-jacket would have made much difference. Both because there is not much padding in those, and because the surface hitting the ground is waxed canvas, not hard plastic. They're good for protecting my elbows from fracturing, but would probably pass the force on up the arm.

With hard caps, the chances of sliding is higher, which can actually alleviate the blunt force and divert it into a roll. And with padding some of the shock force is dampened. I use a jacket for convenience, but if I was just out for maximum protection I would choose tight fitting D3O pads with a small gliding cap. I think Fox has one line with such elbow pads, something like this:

Padding to take some of the shock, and hard plastic to avoid getting stuck in an inflexible energy transfer. I think something like that might actually lessen the risk of just passing the energy up to the shoulder without diffusing it.

I wish I could get a combo of the flexmeters and something like the above... That would be truly awesome: arm protection in one go.

Edited May 20, 2018 by Scatcat

[Rehab1]

54 minutes ago, Scatcat said:

I think that depends a lot on what kind of elbow pads you'd have. I doubt for example that the built in elbow pads in my MC-jacket would have made much difference. Both because there is not much padding in those, and because the surface hitting the ground is waxed canvas, not hard plastic. They're good for protecting my elbows from fracturing, but would probably pass the force on up the arm.

I agree. My new Titan Pro elbow pads should provide an extra degree of protection and hopefully diminish any transilatory forces ascending to my shoulder. I don’t expect a repeat of the unusual circumstances that caused my injury but then again Murphy’s Law is always lurking around the corner.

The Titan Pro’s have a nice articulation that joins both of the injection molded forearm/elbow and bicep padded shells. 

On the interior there is a red ‘egg crate’ type energy absorbing foam that appears to be adequate but I plan to add a layer of sorbathene for further protection.

 

[Scatcat]

14 hours ago, atmadams said:

I never ride with any apps active. However that ride I was connected to DarknessBot. I just opened the app for the first time since the crash (I landed on my iPhone 8 and barley a scratch on it) and all I could see is the battery was at 83% and the temp reading was 37.1c. It doesn’t seem to have stored any log data.

I weigh about 185 lbs conditions were dry and the temp was around 60 F. 

I had only one very minor crash prior which I had a pm conversation with @Marty Backe. Now that I think about it that was hitting a bump too but I was at a very slow speed... no more than a fast walk.  That was a case of the wheel caught on something and off I went.  No injuries to speak of. I opened the wheel and everything looked good. 

 

That almost happened to me this friday. I came to a crossroads, slowed down to a crawl and then started to accelerate again. Just as I leaned forward my wheel found a crack in the road, and I had one of those millisecond long "oh crap" moments  

Luckily the wheel muscled through fast enough that I regained my equilibrium an eyeblink later. But my pulse took another few seconds to come down to normal...

[noisycarlos]

17 hours ago, Hunka Hunka Burning Love said:

@noisycarlos had a puzzling drop from his Ninebot One E+ ages ago that he discovered was due to a some failing battery cells. 

Yeah, I'm still unsure of what happened. (8 out of 30 cells failed on my Ninebot pack), but I suspect that since the BMS doesn't balance the cells until it's reached 100%, and I was mostly charging to 80-90%, I think the BMS didn't get a chance to balance them out. Or.... I got a bad pack. 

[esaj]

A year later, and I'm not sure if I should still just keep this topic pinned... Yes, any wheel can fail, but helloo... Is this "normal"?   

[Chriull]

3 hours ago, esaj said:

A year later, and I'm not sure if I should still just keep this topic pinned... Yes, any wheel can fail, but helloo... Is this "normal"?   

The "oszillation bug" serms to be history by now.

 

[Rehab1]

4 hours ago, esaj said:

A year later, and I'm not sure if I should still just keep this topic pinned... Yes, any wheel can fail, but helloo... Is this "normal"?   

Not normal. When I sold my ACM 1600 earlier this year it had an updated board and motor. The owner crashed the wheel shortly after receiving it. He stated the ACM started oscillating after dropping off of a small curb. I had Jason send him another new board. I have not heard if the situation was resolved. 

[Xoltri]

These reports make me nervous, what are the chances the new MSuper X will be affected?

[meepmeepmayer]

8 minutes ago, Xoltri said:

These reports make me nervous, what are the chances the new MSuper X will be affected?

0.00000000000001%

It was a firmware bug, they fixed it a year ago, whatever is going to be a problem with the X, this isn't it

[Marty Backe]

7 minutes ago, Xoltri said:

These reports make me nervous, what are the chances the new MSuper X will be affected?

Zero. This was an issue with specific firmware from a couple months early in 2017.

[Xoltri]

Cool, thanks.

[em1barns]

1 hour ago, meepmeepmayer said:

0.00000000000001%

It was a firmware bug, they fixed it a year ago, whatever is going to be a problem with the X, this isn't it

It was a firmware bug. While they fixed the issue, nothing tells us they also implemented tests to avoid a similar issue to happen on a future software revision...

[Marty Backe]

25 minutes ago, em1barns said:

It was a firmware bug. While they fixed the issue, nothing tells us they also implemented tests to avoid a similar issue to happen on a future software revision...

If someone is worrying about such things at this level then it's best to stick with KingSong or Inmotion.

[Clifmeister]

unpin this topic ?

[Racheal Ann Swoboda]

So all the v3s+ on the market (new) have the updated firmware? Thinking about getting one within the next couple months

[WARPed1701D]

21 minutes ago, Racheal Ann Swoboda said:

So all the v3s+ on the market (new) have the updated firmware? Thinking about getting one within the next couple months

Welcome to the forum.

Yes, as long as it is not very old stock from a questionable reseller. Buy from Jason at eWheels.com and you have no worries.

Edited July 24, 2018 by WARPed1701D

[AdrianT]

I have a msuper v3s 1300wh 84v with serialnr 2017050261 am i affected? I had 2 strange cut offs at 30~35km h, and also some oscillating movement when accelerating att low speed, disappers when i stop accelerating, is that the firmware symptom?