meepmeepmayer

[one more GOTWAY WARNING] ACM died on a hill (it was bad cabling + high stress, final update pg 16)

381 posts in this topic

Posted (edited)

Congratulations on the new wheel!

The photos look good (though I can't tell if it's the new motor connectors, but they should be). I guess that's how it's supposed to be (as opposed to literally no white heat protection sleeves on my wheel).

For this specific issue, the critical part was the point right where the various motor wires exit the big black cable sleeve coming from the motor, so check that cable management there is not too messy.

And maybe have a look at how good your magnet is affixed to the side panel (though even if the magnet simply separated, probably nothing would happen).

TLDR: looks good, enjoy:) (I am totally not envious at all or anything;)) Awesome wheel and remember, my issue was very high stress and lack of proper cabling, so don't worry too much.

Edited by meepmeepmayer
3

Share this post


Link to post
Share on other sites
42 minutes ago, EvenOdd said:

Just got a ACM 1300wh today and decided to open it up and take a look. QC was passed on March 2nd. Appears to have the newer connectors with the heat wrap on the motor wires.

This one appears to be pretty well done.  If they can continue like this, that will go a long ways in restoring confidence in their product.  But they need a top official at the end doing the QC inspections, as we all know those have been very poor in the past.

2

Share this post


Link to post
Share on other sites
2 minutes ago, SuperSport said:

This one appears to be pretty well done.  If they can continue like this, that will go a long ways in restoring confidence in their product.  But they need a top official at the end doing the QC inspections, as we all know those have been very poor in the past.

The cable bundle messes still aren't decent cable management, and who knows if all electrical components are properly dimensioned. But good to see Gotway steadily improving. For a small company hidden in China somewhere, their customer service also seems pretty good.

0

Share this post


Link to post
Share on other sites
2 minutes ago, meepmeepmayer said:

And maybe have a look at how good your magnet is affixed to the side panel (though even if the magnet simply separated, probably nothing would happen).

Likely not, but if it were to fall onto the Motherboard, it could have bad results.  That's one of the first things I do when I open any wheel is re-glue the magnets.  On my NineBot one E+, it had the same magnet issue.  Although a MUCH better quality glue was used, it also came loose over time.

1

Share this post


Link to post
Share on other sites

Posted (edited)

Magnets are very covered in glue (I'm guessing hot glue) and they felt snug. I may go ahead and replace the glue with gorilla glue or something for peace of mind. 

Excited to get some ride time on this thing. Just riding it through the hallways at my office, I can tell it handles a lot different than my IPS191. 

Edited by EvenOdd
1

Share this post


Link to post
Share on other sites

Heat wrap , is it a toaster ?  if the cables are to thin then its not the solution 

999999-848052000407.jpg?odnBound=200  , 

1

Share this post


Link to post
Share on other sites

@Flash Very true. We're going for "well, it's better than before" incremental improvements here, for more they'd probably have to redesign a bit, get new components, etc.

1

Share this post


Link to post
Share on other sites

Posted (edited)

14 minutes ago, meepmeepmayer said:

@Flash Very true. We're going for "well, it's better than before" incremental improvements here, for more they'd probably have to redesign a bit, get new components, etc.

Yes , I'm interested in this model but I want it to be safe and the price is a bit high ,   it's like when I blew a fuse on my ks18 and now I think about it all the time , i would rather use 50A fuse than 40A and risking the motherboard than having a faceplant , but I drive everyday and enjoy it

Edited by Flash
1

Share this post


Link to post
Share on other sites

Posted (edited)

34 minutes ago, KingSong69 said:

No sorry....

its both... yes, it protects the batteries from short circuit and fire...totally true!!!

But also protects the board from burning when malfunctioning and drawing to much power...

good example is malfunction of capacitor, while also drawing Amps for normal riding!

would burn the board and is so protected by the fuse....

mostly fuse burn on a KS is because of "excessive overpowering" or pointing to another board failure....

 

it happened in the forrest , in moss roots , as long as it doesn't happens on the road then  its not so bad  :rolleyes:

Have Tina left the building ?   :cry2::crying:

Edited by Flash
0

Share this post


Link to post
Share on other sites

Posted (edited)

@Xima Lhotz You're entirely 100% right with your objections. At least improved cabling is better than nothing.

And for actual sufficient cabling, someone has to convince GW to change their design. They have to use new parts, talk to their suppliers, etc. Given how notoriouly resistant I expect them to be to any change that does not lead to direct problems/complaints/repair costs/diminished sales - this will be a hard task. Maybe a concerted demand from dealers can do that.

I won't try that mountain again for the reasons you stated - I don't trust the electronics and there will be the same (or another) problem again. But maybe the only way to get GW to redesign is someone having that problem. Not sure if I want to be that someone:mellow: maybe I'll do some experimenting if I get another wheel.

Edited by meepmeepmayer
3

Share this post


Link to post
Share on other sites

Posted (edited)

Updated OP so it is mentioned that not all problems are fixed, as some are due to the current design.

Edited by meepmeepmayer
0

Share this post


Link to post
Share on other sites
12 hours ago, meepmeepmayer said:

At least improved cabling is better than nothing.

Sure, it says they are listening and wants to fix problems and this is great. Maybe next time they will change the engine cables to :-) 

12 hours ago, meepmeepmayer said:

And for actual sufficient cabling, someone has to convince GW to change their design. 

Yes, can't believe that they need convincing, the science is free, calculate according to load, heat and cable specs and your done!

12 hours ago, meepmeepmayer said:

I won't try that mountain again for the reasons you stated

Yes, this is the worst part, many riders use their wheels daily without problems but how does one know? What heat, hill, heat build up during a ride, board temp, bump, start, stopp etc will be the deciding factor when you have a cable as limiting factor. The limit should be current output from the board and the cables should then be designed around that current and temp.

 

12 hours ago, meepmeepmayer said:

But maybe the only way to get GW to redesign is someone having that problem. Not sure if I want to be that someone:mellow: maybe I'll do some experimenting if I get another wheel.

You have already been that someone :) 

By posting your thread you contributed to the development and got a ball rolling! Thats great!

2

Share this post


Link to post
Share on other sites

Posted (edited)

12 hours ago, Rehab1 said:

 Pulling my new 12 awg silicone wires through the small axle conduit takes patience and there is no room for error. 

The fact you got 3 12AWG wires through that hole displays great patience.

Quote

Not only should the motor wires carry a larger load but should be of better quality. The flame/ heat test video I performed on the OEM and new silicone wires stated volumes on the insulating factor between the two grades.

Yes, this is so true. The silicon cables (that are clearly marked 200C 14AWG) from the board looks to be quality cables while the engine cable (regardless of spec) is not.

And while fire might not be the most scientific (but most fun :popcorn:) test it does display what happens to cables over time if they are subjected to heat (read current)  thats higher then they are designed for. They dry and fall apart.

 

 

Edited by Xima Lhotz
2

Share this post


Link to post
Share on other sites

Posted (edited)

@Xima Lhotz Thanks... I guess you're right, it already happened:D Though I have the hope (wishful thinking?) that, were I to try again, maybe the heat sleeves would do something.

Very much agree with your "the science is free" comment, you'd think that's what a designer would do right at the start. Or maybe they did and ignored the result because no better supplier part was available.

Wow, just saw your new pictures, amazing!!! You see more in these pictures than me looking at the real thing:thumbup:

--

12 hours ago, Rehab1 said:

If GW were to implement the wiring and axle changes they would be King Of EUCs!

If only Gotway fixed their unrealiable electronics (electrics?), they would be the King of EUCs!

If only Kingsong offered more performance oriented wheels, they would be the King of EUCs!

If only Inmotion offered bigger batteries and stopped their geolocking shenanigans, they would be the King of EUCs!

If only Ninebot hadn't stopped new develoments, they would be the King of EUCs!

Everyone's soooo close.

It's interesting (and a bit hair-raising) to see that you could effectively "win" the EUC market by doing proper development/investment now. But I guess tiny Chinese manufacturers can't do that so easily, the market is too small, not enough money, who knows.

Wish I had a lot of money to burn for starting a no-compromises EUC manufacturer. You'd never make the money back, but who cares;)

Edited by meepmeepmayer
1

Share this post


Link to post
Share on other sites
14 hours ago, meepmeepmayer said:

I won't try that mountain again for the reasons you stated - I don't trust the electronics and there will be the same (or another) problem again. But maybe the only way to get GW to redesign is someone having that problem. Not sure if I want to be that someone:mellow: maybe I'll do some experimenting if I get another wheel.

Perhaps you can measure that hill how steep(degree) it was and how Long it was?

When i remember correctly you sad it was very extreme AND Long....and also you have done very much hills before?

 

i agree that for sure the cable's are not thick enough or low Quality....and that they are the real reason for all the connector Problems and the connector was just the weakest in the row, so it failed first.

But: As i have my Msuperv3 with the same crappy cable since Oktober 2016, have been sometimes at 100kg heavy, AND done some fast and excessive riding without any failure, i really HOPE that this was a very, very unique Situation what meepmeep had done/experienced! And that as Long as you stay away from 25degree 2 mile hills...this will not happen.

Hope dies at last ;-)

1

Share this post


Link to post
Share on other sites

Estimated 1 km at around 15%. The best way to describe that route is "even if you walk, you'll be out of breath fast due to the constant and notable incline", so it's not a leisurely stroll. Which is exactly why it was so cool to fly up there with a EUC with no effort, remembering huffing and puffing up there (well, a similar path next to it).

I'll go back and measure that route, as well as the ones that worked. Already downloaded a ton of different inclinometer apps for the purpose. Just have been too lazy for now.

-

I think a good recommendation is: if you can walk up the path and it's reasonably leisurely, it's fine and the wheel will do it. If it's notably exhausting and you have to walk slower to keep your breath (more like mountain hiking), be careful, your wheel has to do a lot of work.

 

1

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now