Jump to content
Chriull

WARNING: Gotway Nikola production (assembly) issue [Solved]

Recommended Posts

Sorry I meant those mica insulators, not actual thermal pads. How exactly is that mica stuff called?

Share this post


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

Sorry I meant those mica insulators, not actual thermal pads. How exactly is that mica stuff called?

In german glimmerscheibe/plättchen.

With google "glimmerscheibe für kühlkörper" or "glimmerscheibe to220" you'll find all of them....

Share this post


Link to post
Share on other sites
On 6/26/2019 at 9:47 AM, Marty Backe said:

The replacement boards the EWheels is getting have the new MOSFETs. EWheels customers won't have to spend any $$$

They are being sent out this week from Gotway, so we may have something the following week.

It may be a couple of weeks before I go back to the testing grounds :)

So will we be able to send our wheel in again to have the board switched.    I’m not tech enough to want to try that repair.   It was hard enough for me to fix my v8.  And I never got the lights back on correctly. So I’m not risking messing up my beautiful nikola. 

Share this post


Link to post
Share on other sites
11 minutes ago, Lucas Alexander Oliver said:

So will we be able to send our wheel in again to have the board switched.    I’m not tech enough to want to try that repair.   It was hard enough for me to fix my v8.  And I never got the lights back on correctly. So I’m not risking messing up my beautiful nikola. 

Best to reach out to EWheels directly for questions like this.

Share this post


Link to post
Share on other sites

Hey guys I am new to EUC and I just purchased the Nikola from Jason over at Ewheels as my first EUC. Before I purchased I did some research and also watched Marty's overheat hill video and subsequent post mortem. Then, after watching Phil's video and looking at the assembly of the product it seems like it is a substandard assembly job from an electronics perspective. Since many of you are veterans of this activity do you guys find these types of quality issues with say, Kingsong or Inmotion? If so, is there not a major concern on face planting during a ride?

By the way, I chose the Nikola as my first wheel because I just didn't want to spend $1200 - $2000 for another and then another EUC as I progressed. It seemed like the Nikola was going to be my one and done.

In any case, I plan on learning to ride the Nikola for a couple of days next week when I get it and then cracking it open to perform the adjustments for heat dissipation that Phil shows in his video. 

(Thanks for the video's it was very educational. I wish I found this forum earlier, I may have decided on a different model, then again I may not have).

Share this post


Link to post
Share on other sites
14 minutes ago, Anagnorisis said:

Hey guys I am new to EUC and I just purchased the Nikola from Jason over at Ewheels as my first EUC. Before I purchased I did some research and also watched Marty's overheat hill video and subsequent post mortem. Then, after watching Phil's video and looking at the assembly of the product it seems like it is a substandard assembly job from an electronics perspective. Since many of you are veterans of this activity do you guys find these types of quality issues with say, Kingsong or Inmotion? If so, is there not a major concern on face planting during a ride?

By the way, I chose the Nikola as my first wheel because I just didn't want to spend $1200 - $2000 for another and then another EUC as I progressed. It seemed like the Nikola was going to be my one and done.

In any case, I plan on learning to ride the Nikola for a couple of days next week when I get it and then cracking it open to perform the adjustments for heat dissipation that Phil shows in his video. 

(Thanks for the video's it was very educational. I wish I found this forum earlier, I may have decided on a different model, then again I may not have).

you will not find this type of build quality on kingsong or inmotion, they are impeccable.. hence why they are also more expensive.. there is no concern with face planting with normal usage on any modern wheel.. the msx, which is a gotway, has the best record for any euc ever made.. yet if you open it up, you will see the same thing, what appears to be some sort of experiment done by a 12 year old :P your choice was a good one, and i think the nikola will be a great ride for years to come

Share this post


Link to post
Share on other sites

Would it still be okay to order a Nikola right now (as a beginner) to learn on and get the new board when Gotway supplies them> 

Share this post


Link to post
Share on other sites
45 minutes ago, NYC_Frutips said:

Would it still be okay to order a Nikola right now (as a beginner) to learn on and get the new board when Gotway supplies them> 

You don't want to buy a compromised (glued MOSFETs) Nikola as it could fail at any time. Get one you know has been fixed, ask your seller.

 

Edited by wheelr

Share this post


Link to post
Share on other sites
1 hour ago, wheelr said:

You don't want to buy a compromised (glued MOSFETs) Nikola as it could fail at any time. Get one you know has been fixed, ask your seller.

Unfortunately no seller will be able to tell you whether a particular board has glue between the MOSFETs and the thermal pads or not (since Gotway has not acknowledged this particular problem to begin with as far as I know, we don't know about any changes to their manufacturing process). But your general advice is still a good one, but when buying a new wheel instead ask for the new motherboard with the TO-247 MOSFETs.  Those might still possibly have some glue on them, but presumably that would be the same for the MSX and no one has reported any problem with those. Even if the glue was introduced with the Nikola, then Gotway is more likely to have been paying attention to the issue since the production of the new boards, so that would still hold I'd say.

Edited by Nils

Share this post


Link to post
Share on other sites
19 minutes ago, Nils said:

(since Gotway has not acknowledged this particular problem to begin with as far as I know, we don't know about any changes to their manufacturing process)

I think they know. They're not stupid, just trying to coast by without what they should do (recall of the first batch or sending out replacement boards). The fact that @Jason McNeil got them to ship him replacement boards for all his Nikolas alone should have alerted them.

Also that Jason hasn't given an update here yet makes me believe the situation is still developing. I wonder what the French dealers are doing.

What I would do is wait if I wanted a Nikola. All boards from now on (maybe production date 20190627... and later?) should be good and glue-free. Waiting should also give a better TO-247 board on the 84V Nikola, I hope they will have those on all new Nikolas from now on, not just Jasons. So I'd just wait long enough until one gets such a wheel (also with the all-black new Plus design:)).

Of course if you buy from a source you know will have an eye on this issue, you can buy right now. So @NYC_Frutips if you buy from ewheels right now you're guaranteed to be good. Jason won't ship out Nikolas with bad boards anyways.

Edited by meepmeepmayer

Share this post


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

I think they know. They're not stupid, just trying to coast by without what they should do (recall of the first batch or sending out replacement boards). The fact that @Jason McNeil got them to ship him replacement boards for all his Nikolas alone should have alerted them.

Also that Jason hasn't given an update here yet makes me believe the situation is still developing. I wonder what the French dealers are doing.

What I would do is wait if I wanted a Nikola. All boards from now on (maybe production date 20190627... and later?) should be good and glue-free. Waiting should also give a better TO-247 board on the 84V Nikola, I hope they will have those on all new Nikolas from now on, not just Jasons. So I'd just wait long enough until one gets such a wheel (also with the all-black new Plus design:)).

Of course if you buy from a source you know will have an eye on this issue, you can buy right now. So @NYC_Frutips if you buy from ewheels right now you're guaranteed to be good. Jason won't ship out Nikolas with bad boards anyways.

I agree with them knowing (I assume they just don't want any admission of guilt), but I'd expect them to ship out the forthcoming wheels with new board with TO-247 MOSFETs, hence the suggestion it'd be a good tell-tale marker of what a good new wheel would have. Of course, they could and should have tightened the QA supervision even prior to that, but how would how a presumptive buyer know without any official acknowledgement?

Edited by Nils

Share this post


Link to post
Share on other sites

My gut tells me that most people who buy a Nikola will have no problems. According to Gotway, they have produced 600 Nikola's and we have not seen wide spread failures.

I will personally recommend that people only buy a Nikola that contains the new board. There are plenty of people in the world that will continue to be ignorant of the issue, and they can be the ones that deplete the existing stock. 

Share this post


Link to post
Share on other sites
51 minutes ago, Marty Backe said:

My gut tells me that most people who buy a Nikola will have no problems. According to Gotway, they have produced 600 Nikola's and we have not seen wide spread failures.

I will personally recommend that people only buy a Nikola that contains the new board. There are plenty of people in the world that will continue to be ignorant of the issue, and they can be the ones that deplete the existing stock. 

New board for sure is better, yet if they have still mosfet  hot glue, it most likely would fail the same...

Share this post


Link to post
Share on other sites
1 hour ago, LucasD said:

New board for sure is better, yet if they have still mosfet  hot glue, it most likely would fail the same...

I don't agree, but that's me.

Also, this is a new board and Gotway is now using a different type of thermal transfer sheet that would preclude the need for any adhesive.

Share this post


Link to post
Share on other sites

I really wish we could get a company like Honda or Toyota, that follows or atleast attempts to follow industry best practices when it comes to manufacturing/assembly, quality control, software/app development and has ISO standards as part of their normal routine, developing EUCs

Not that there wouldn't still be qc issues or potentially recalls and other problems, but I would just love to see their take on the vehicle and how their development compares to gotway and kingsong.

Unfortunately, i imagine besides not being popular enough there are too many liability issues for Honda/Toyota/etc to get into this business right now

Share this post


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

I don't agree, but that's me.

Also, this is a new board and Gotway is now using a different type of thermal transfer sheet that would preclude the need for any adhesive.

+1. GW takes this serious - they are putting much effort in their wheels. Imo that was just some thoughtless assembly simplification, someone without knowledge invented. They know now and the issue is solved!

Just some of these ?600? wheels already produced could have the issue.

Share this post


Link to post
Share on other sites
20 minutes ago, Marty Backe said:

I don't agree, but that's me.

Also, this is a new board and Gotway is now using a different type of thermal transfer sheet that would preclude the need for any adhesive.

Didn't one of the Glued Nikolas burnt a MOSFET under very little stress? I could be wrong, but I remember reading that.

Share this post


Link to post
Share on other sites
1 minute ago, wheelr said:

Didn't one of the Glued Nikolas burnt a MOSFET under very little stress? I could be wrong, but I remember reading that.

Yes. It had been ridden up a hill, but apparently not a super steep hill.

However, you are responding to my comment made to @LucasD, where he believes that boards with the bigger MOSFETs will probably fail if glue is used. So I'm not sure what your point/question is :confused1:

Share this post


Link to post
Share on other sites
21 minutes ago, Marty Backe said:

Yes. It had been ridden up a hill, but apparently not a super steep hill.

However, you are responding to my comment made to @LucasD, where he believes that boards with the bigger MOSFETs will probably fail if glue is used. So I'm not sure what your point/question is :confused1:

My point/question is: If a smaller glued MOSFET could burn under little stress, couldn't a larger glued MOSFET burn under slightly greater stress? 

Share this post


Link to post
Share on other sites
9 minutes ago, wheelr said:

couldn't a larger glued MOSFET burn under slightly greater stress? 

Yes - he would, too. As there is no sane reason to do so. GW got it, that some assembly faults happened - so there should not be any reason for them to repeat this.

Most likely the smaller mosfets properly mounted should make it fine, too.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...